巻号一覧
8 巻 (1953)
- 3-4 号 p. 77-
- 1-2 号 p. 1-
8 巻, 3-4 号
選択された号の論文の25件中1～25を表示しています
- |<
- <
- 1
- >
- >|
-
坪井 八十二, 中川 行夫1953 年 8 巻 3-4 号 p. 77-80
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーThis paper includes several results of investigation which, the authors hope, would provide some data to both the micro-meteorological problems of the grape culture and the relation between the micro-meteorological characteristics and the density of crops.
The micro-climate in a vineyard in Kofu, which is the chief producing district of grapes in Japan, was investigated for several days in both summer and autumn, i.e., June 21-22, and October 11-13, 1952.
It was found that in the vineyard there were two layers of thermal importance, i.e. the soil surface and the trellis of grapes, and that the trellis had more and more strong influences on the micro-meteorological characteristics in the vineyard with the increase in the degree of its luxuriancy.
Typical vertical distributions of temperature in the vineyard are shown in Fig. 1, where a maximum temperature in the day time and a minimum in the night are both found at the upper surace of trellis.
The air temperature under the trellis in the vineyard was distinctly lower than that at the same level in the open land in the day time, and, reversely, in the night the former was slightly higher than the latter. These phenomena seem to be due to the fact that the trellis protects the outgoing radiation from the underlying soil surface.
This tendency became more and more remarkable with the degree of luxuriancy of the trellis as shown in Table 4.
The relative humidity distributions near the trellis are shown in Table 2. It was recognized that the humidity in the day time was the highest at the middle part of trellis and the lowest at the upper part, and that under the trellis it increased with the degree of luxuriancy of trellis as shown in Table 5. In the night, however, there was no difference between them.
In this survey, it must be noted that the vertical distribution of air temperature near the ground in the night was of the same type as what was advanced by L. A. Ramdas and the others (1932), but disagreed with what has been called “Nocturnal outgoing radiation type” by R. Geiger (1927) up to this time.抄録全体を表示PDF形式でダウンロード (679K) -
(1) 收穫法との関係田口 亮平, 奧村 秀雄1953 年 8 巻 3-4 号 p. 81-83
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリー桑葉の収穫法の相違が桑園の畦間の温度分布並びにその日変化に及ぼす影響を知るために, 信州大学繊維学部桑園に於て1951年8月に測定を行い, 測定結果をイソプレート及び垂直分布, 日較差の図に表わして考察した。
(1) 畦間気温の最高は春切摘葉区では, 14時頃地上20cmの部分を中心として現われるが, 春切無摘葉区では10時頃これより著しく高い100cmの部分に出現する。これは前者では, 日射が地面にとゞくのに後者では桑葉の繁茂が著しい為, 地面に殆ど到達しない為と思われる。
(2) 夏切無摘葉区では春切無摘葉区に比して, 最高温部が著しく低く20cm附近に現れ, その出現の時刻もおそく14時である。これは前者では無摘葉であつても桑葉の繁茂が後者に比し明かに少く, 受熱面がより低い為と考えられる。
(3) 摘葉を行つた場合と, 無摘葉の場合に於ける畦間の1日中の最高気温を比較すると, 前者では地面近くの最高気温が後者のそれに比して著しく高く, しかもこの部位の温度較差も明かに大である。桑葉の繁茂の著しい場合は然らざる場合或は摘葉した場合に比して, 地面近くの最低気温が明かに低く, しかも温度較差も少い。抄録全体を表示PDF形式でダウンロード (537K) -
道家 剛三郎1953 年 8 巻 3-4 号 p. 84-86
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリー1. 作物の病症が微細環境の変化とどのような関係にあるかを麦白渋病について畦間気象を中心に調査した。供試麦畑の白渋病は草生密度及び垂直位置により各々異る被害度を示した。
2. 温度, 湿度, 蒸発量, 光線量, 風速等につき観測した結果, 夫々の位置に特異な変化が認められ, 病症の差はこれが因子の綜合と見られる条件を多く含んでいる。
3. 特に集団作物に於ける生育層の部分的病症の促制に温度, 湿度及び光線量による環境構成が大きく影響しているようである。抄録全体を表示PDF形式でダウンロード (540K) -
蔭山 力1953 年 8 巻 3-4 号 p. 87-88
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (378K) -
長谷川 浩, 五島 憲秋1953 年 8 巻 3-4 号 p. 89-91
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリー耕種条件をことにするイモ畑について, その微気象を観測し, 次の諸点を明かにした。
1) 5cm及び10cm地温 (14時) は7月下旬を最高とし, 全生育期間を通じて,
標準植区<同少肥区<晩植区<同少肥区
の関係が認められ, 区間の差は7月下旬において最も大きく, 以後漸減した。なお, 日変化 (8月9日) を見るに, 晩植区は昼夜とも標準植区に比して高温であつた。
2) 20cm及び30cm深地温 (14時) は, 8月上旬を最高とし, 区間には5cm及び10cm地温と同様な傾向が認められたが, その差は小さかつた。
3) 接地気温は, 裸地区に比して低く, 標準植区は晩植に比して僅かに低温であつた。
4) 土壤水分は晩植区において小で, 蔓上面における蒸発量は晩植区で大であつた。抄録全体を表示PDF形式でダウンロード (500K) -
八鍬 利助1953 年 8 巻 3-4 号 p. 92-96
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーIn this experiment the effect of soil dressing upon the temperature of peat soil was studied, the arrangement of plots in bottom-less wooden frames 4m×4m×0.3m set in the ground with surface of the contents as shown below about 3cm above the soil level, was as follows:—
Plot 1. Peat soil
Plot 2. 3cm thick loam+9cm peat soil, that is; 3cm thick loam was introduced on the peat soil and was carefully intermixed.
Plot 3. 6cm thick loam+6cm peatsoil.
Plot 4. 9cm thick loam+3cm peat soil.
Plot 5. Loam wich is used as soil dressing was filled in a wooden frame 2m×2m×1m set in the ground.
(1) If loam is introduced on peat soil, the temperature of the latter becomes considerably high as shown in Fig. 1 and 2 and in Table 1.
(2) In peat soil, the range of diurnal variation of soil temperature decreases with depth more rapidly than in loam, so at the depth of 32cm the range of temperature variation is almost unnoticeable (Fig. 3)
But if loam is introduced on peat soil, temperature variation enters deeper into the soil (Table 3)
(3) Thermal diffusivity of peat soil is much smaller than that of loam; the diffusivity of the dressed soil layer of plot 3 was much greater than that of plot (Table 4).
(4) Heat conductivity of each plot was calculated as shown in Table 7.抄録全体を表示PDF形式でダウンロード (719K) -
中原 孫吉, 三寺 光雄1953 年 8 巻 3-4 号 p. 97-98
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーWe adopted a factor analysis as was before reported for the rice yield of the late season crops that resulted from the rice-experiments in twenty agricultural experiment stations of Japan covering the period of 30 years from 1911 to 1940, and obtained a factor load diagram as shown in Table 1, which is one of the fundamental data of our further study.抄録全体を表示PDF形式でダウンロード (304K) -
原 三郎1953 年 8 巻 3-4 号 p. 99-101
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーWe studied on the relationship between the yields and temperature from 1948 to 1952 obseved in the experiments of meteorological influences, as a step in estimating the barley and wheat yields in future.
Our studies are on the statistical consideration of the temperature at 10 a.m. and 2 p.m. during years from 1925 to 1951 measured at the Yokohama meteorological Station, and the relationship between the yields and temperature observed at the Ofuna Experiment Station; and the relationship between the yields and the growing processes at the Ono Experiment Station.
The results are as fallows:
1) The crops proved to have negative relationship with the average monthly temperature from November to February; positive relationship with that from March to April; and almost perfect positive relationship with the comparative difference in the two average monthly temperatures.
So that increased yields in barley crops was the cold in the winter season and warmth in spring season and the large comparative difference in the two seasons.
2) The coefficient of variability in the temperature in the growing season of barley is larger than that in summer crop season.
It is very large from December to March, especially from January to February.
So we can prove the season for the larger variation in barley. yields and the effects of the temperature from December to March (especially January to February) on the variation.
3) The relationship is more intimate between the yields and the growing speed, the ratio of the growing quantity, ect, than between the yields and the data observed at specific periods, such as the length of plants, the weight of plant body above the ground, the weight of dried matter, the length of young heads, the number of stalks, etc.
The former relationship is more intimate in later stages than earlier stages in the growing season.
It has, therefore, a negative relationship with the “akiochi” tendency.
The same tendency is observed in the relationship between the yields and temperature: more intimate relationship is found between the yields and the comparative difference in two adjoining months or in several months, than between the yields and the observed data themselves.抄録全体を表示PDF形式でダウンロード (514K) -
松原 茂, 奧田 節夫1953 年 8 巻 3-4 号 p. 102-104
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーThe time lag of instruments is quantitatively defined, and the experimental method determining the lag coef. K and lag time τ is explained. The numerical values of K of a few instruments are given.
The differences between true value and observed value by instruments with time lag are calculated at a few cases which occur out in meteorological observation.抄録全体を表示PDF形式でダウンロード (458K) -
荒井 哲男1953 年 8 巻 3-4 号 p. 105-107
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーWhen the glass sphere and recording papers after Campbell-Stokes are wetted so much with dew or frost and the morning sunlight is so feeble that it is incapable to give burning traces on the recording paper, the registered sunshine hours are found to be of shorter duration than they ought to be.
The comparison was made between the Sunshine recorders of Campbell-Stokes and those of Jordan from Mar to Feb. at Kashiwa, a little suburban town near Tokyo.
The mean reterdation of Campbell-Stokes' sunshine recorder as Compared with Jordans' in the fine morning is as follows:—
0.22 hours when dew or frost is light
0.34 hours when dew or frost is moderate
0.45 hours when dew or frost is heavy
This Phenomenon is not outstanding, though naticeable, in Tokyo, Compared with Kashiwa, because these apparatuses mount on the high tower in Tokyo, while those at Kashiwa are Placed near the ground.
The following remarks will be warthy to note.
1) Campbell-Stokes recorder reacts more sensitively to sunshine than Jordan's in sunset and sun rise, and also in dense haze.
2) Jordan's recorder registers Prettily well even when the sunlight is screened with thin clouds.抄録全体を表示PDF形式でダウンロード (437K) -
久保 次郎1953 年 8 巻 3-4 号 p. 108-110
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーThe basic principle of the author's new apparatus is almost the same with that of A.U. MOMIN. (c.f. Agricultural Meteorology Vol. 6, No. 1, p. 50)
Namely, the author made a special mercury thermometer in which the half part of the bulb was wound by the electrically heating wire. (c.f. Fig. 1)
When the bulb which was buried in the soil is heated by a constant current, the time which was required for the temperature rise of a certain degree in the temperature is proportional to the soil moisture. So we can easily find the value of soil moisture by measuring the heating time is required for a constant temperature rise.
The author estimated the value of heating current and temperature rise as follows.
heating current=200mA
temperature rise=5°C (c.f. Fig. 2)
Under above conditions, the author investigated on the relation between the heating time required for temperature rise of 5°C and the soil moisture. (c.f. Fig. 3)抄録全体を表示PDF形式でダウンロード (460K) -
(3) 湛水の深さと水温の日変化について三原 義秋, 矢吹 万壽, 萩原 美代子1953 年 8 巻 3-4 号 p. 111-116
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーThe present study deals with the fundamental characteristics of temperature developing in shallow stagnant water such as paddy field.
Measurements are carried on the concret potts filled with water in various depth from 1cm to 20cm. The result of survey on vertical distribution of water temperature by using a thermocouple shows that the isotherm lines at the times of maximum and minimum temperatures almost parpendicular in such shallow waters. Then, for the long-period measurement, the thermometers were installed at the middle of water layer.
Conclusions obtained are as follows.
1. Generally, the time of the maximum temperature of stagnant water gets late systematicaly with the increase of water depth. The state of this delay is quite similar to that of the temperature variation of the ground, notwithstanding that they differ distinctly in character. The lag of phase of temperature diurnal change in various deep waters may be represented through the formula of heat conduction Cx-C0=-x/α√π/T·Cx and C0 are the phases of temperature, at the depth of x and 0 respectively, then we find as if the value of thermal diffusivity α in water is about twice larger than that of the soil.
2. Deeper water generally has lower maximum and higher minimum temperature in the sun. However, the relation between depth and maximum temperature is not simple. Particularly in shallow waters below 10cm in depth, maximum temperatures approximate each other and it is not seldom to find higher temperature in deeper water.
3. Both maximum and miniumm temperatures in three waters, 3, 5, and 8cm in depth, are measured for a year.
In maximum temperature, annual means shows a slight higher temperature in shallower water, the difference between two waters, 3cm and 8cm, is only 0.4C. The number of days which show high temperature in deeper water, i.e. (3)≤(5)≤(8), reaches 12% for a year, and the number of reversals between two waters amounts to 40%.抄録全体を表示PDF形式でダウンロード (1022K) -
1953 年 8 巻 3-4 号 p. 116-116,133
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (368K) -
熊井 基, 千葉 豪1953 年 8 巻 3-4 号 p. 117-119
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーThese observations were made of the microclimate in a paddy field which belongs to the Hokkaido Agricultural Experiment Station in a suburb of Sapporo The formula on the heat energy balance of the paddy field, consists of as follows,
ΣtI=Σt(B+E+W+S+R+H)
Here, I, B, B, W, S, R, H represent the heat of the solar radiation, its reflection on the water surface and the bottom, evaporation, the heat of getting or tossing of the field's watery that of inundated soil, the effective radiation at night the heat transfer by convection and conduction from the field's water respectly. The results of htese measurement are shown in Table I. The heat which is represented by B, W, S and R is much smaller than that of E and H. The total heat of E and H amounts to about per cent of the solar radiation. From this result, we considered the mechanism of temperature rising of the water and the soil of the paddy field by the solar radiation.抄録全体を表示PDF形式でダウンロード (523K) -
佐藤 正一, 船橋 義成1953 年 8 巻 3-4 号 p. 120-122
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリー1. The annual course of the ground-water in the field of Kyoushu Agr. Exp. Ssation is shown in Fag. 2; and the measuring apparatus in Fig. 1.
2. The ground-water level is deeper than 1.5m in winter or spring season (non-irrigating term), and shallower than 1.0m in summer or autumn season (irrigating term for the paddy field). It suddenly falls down after the supply of water for percolation is stopped.
3. The fall of the ground-water in continuous non-precipitation days is represented by formula (1), and the daily falling quantity (b) is a function of the initial level (a)……Formula (2) b<2.5cm/day in non-irriagation term, b>2.5cm/day in irrigating term, and b>6.0cm/day after the stop of irrigation.
4. The level begins to rise up with about 5mm-rain a day in irrigating term, and with about 10mm-rain in non-irrigating term.
5. The daily change of ground-water level is shown, as an example, in Table 2.抄録全体を表示PDF形式でダウンロード (503K) -
鈴木 親〓1953 年 8 巻 3-4 号 p. 123-125
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリー(1) Some physical characters of several different kinds of paper which relate to the silkworm rearing were measured. The measured characteristics were (a) thickness, (b) weight for unit area, (c) density (d) smoothness of smooth side and of rough side, (e) aerial permeability, (f) water absorption ability, (g) water-vapour absorption ability, (h) water-vapour permeability (i) water evaporation rate in linear part, and (j) CO2-gas permeability. The kinds of paper were (1) Japanese common paper, (2) popular paper in Japan, (3) news-paper used in Japan, (4) hatlon paper, (5) paper for silkworm-rearing, (6) egg-card for silkworm, (7) thick paper, (8) cellophan paper, and (g) paraffin paper. The water vapour permeability and the CO2-gas permeability of (10) cotton cloth in dry state, of (11) wetted cotton cloth, and of (12) no substance to cover were measured, too. The measured values were shown in Table 1.
(2) Both the cellophan paper and the paraffin paper have no permeability for the air and the CO2-gas.
(3) The wetted cloth, having been controlled by water contained in it, shows different degrees of aerial permeability and of CO2-gas permeability.
(4) The cellophan paper has considerable permeability for water-vapour, but no ability for other gases (air, CO2).
(5) Paraffin paper has almost no permeability for the water-vapour as well as for other gases.
(6) The water-vapour absorption ability (A) of a series of paper made of wood fibers is proportional to n power of each own areal weight (W), viz. A=kWn. (See Table 2).
(7) The relation between the sheets of paper (S) and the water-vapour permeability (T) is shown by following functional type: T=Tc+ae-nS. (See Table 3)
(8) The water-vapour permeability of a kind of paper is proportional to the difference of the vapour pressure between the one side and the other side of the paper (See Fig. 1).抄録全体を表示PDF形式でダウンロード (520K) -
氏家 四郎, 斎藤 豊治, 佐藤 馨1953 年 8 巻 3-4 号 p. 126-128
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーWe investigated the damage of rice-plant by the thunderbolt in the district of Iwanuma-Machi, Miyagi-Prefecture on August, 4 1952. Damage is as follows:
The area of the damage were about 300 tsubo.
The blades, leaf-sheath and few young-panicle were mainly injured. It is because the stage of rice-plant growth was about 12-13 days before the head-sprouting period. It was found that the number of panicle and spikelet was decreased and there broke out many diseases, for example, Ophiobolus Miyabeanus ITO et. KURIB., Entyloma Oryzae SYD., Piricularia Oryzae BRI et. CAV., etc.
Consequently, the sum of decrease in rice-production caused by the thunder stroke was 20-40%.抄録全体を表示PDF形式でダウンロード (610K) -
大後 美保, 野村 健一, 鈴木 雄次1953 年 8 巻 3-4 号 p. 129-133
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーIn this paper we studied the locality of the damage by weather of paddy rice, upland rice, wheat and barley. First, we divided our country into three regions, according to the climatic conditions which have close relation to the damage; a region of larger damage which most often suffers damage, a region of small damage which suffers damage not so often, and a region of no damage which suffers no damage. The distribution of the three regions are shown in Fig. 1 and 2, where we can see the kind and amount of damage in each district of Japan.抄録全体を表示PDF形式でダウンロード (1061K) -
三沢 春郎1953 年 8 巻 3-4 号 p. 134-136
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーFig. 1 is the average monthly temperatures at Kofu, Central Japan. according to “Phenology in Japan (1974)” the average flowering date of Prunus subhirtella (Higanzakura in Japanese) in this locality is April 4th. Take this value (P) on the transversal axis in Fig. 1. and draw a line perpendicular to it at P in order to get the crossing point (Q) between this line and the temperature curve. Then PQ is to indicate the average flowering temperature of this cherry there. In this way the writer measured the flowering temperatures at 35 spots in Japan where there are weather stations and the phenological observations of this plant have been made, Based upon the flowering temperature, he then classified these spots into 9 groups which are from 8.5°C to 12.5°C, each with the 0.5°C advance in temperatuce and converted the numbers of the spots belonging to each group in terms of the percentage against the total number of the spots thus measured. The numbers and the percentages thus classified are shown in Table 2. It is an outstanding phenomenon that 12 spots or as many as 34.3% among them have concentrated in the 10°C group. He calculated the algebraic mean and the probable error which are 29.2°C and 0.56°C respectively.
From the data of the above-mentioned literature, he measured not only the flowering temperature of P. subhirtella but those of P. mume, P. Persica, P. subsp. serrulata, P. serrulata and P. yedoensis aswell. The distribution of the spots similarly converted in terms of the percentage are shown in Fig. 2. The mean values and the probable errors are inserted in the second column from the right and in the last one of Table 1 respectively. It must be added, as for P. yedoensis the number of the spots classified by each 0.5°C difference in temperature and their percentages are also shown in Table 2 as the numerals within brackets.
From the polygons of Fig. 2 and the numerals of Table 1. the writer has summarized as follows:—
(1) The Japanese Apricot blooms in the wider range of air temperature, the lowest being 4.0°C at Tateno anb the highest 10.9°C at Fushiki, (2) while those cherries sdch as P. subhirtella and P. subsp, serrulata anb also the peach blooms only within the remarkably narrow range of air temperature, from which fact has proved to be favorable for a plant indicator in phenology. (3) P. serrulata anb P. yedoensis have the intermediate tendency of the above-mentioned plants.抄録全体を表示PDF形式でダウンロード (504K) -
木村 吉郎1953 年 8 巻 3-4 号 p. 137-139
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーIt has come to the results that the correlation coefficients between the traps-mode percent and other eight items which picked up from the table in the former report, were high in Hokkaido and low in the S-W type as shown in table 1.
From the correlation diagram of fig. 1, the three regional linkage groups, are observed and the one linked into a line with Aomori, Miyagi, Iwate and Yamagata Prefectures, which lie in north along the Pacific coast coastals but turning about 38° N of the N-E type to west, the next one with Ibaragi, Tochigi, Chiba, Kanagawa, Shizuoka and Yamanashi Prefectures, which lie in south along the Pacific coastals but turning about the south marginal of N-E type to north and the last with Tokyô, Saitama and Yamanashi Prefectures approximately parallel the former group.
There are concluded that the regional linkage group is regionality formed in the bad harvest region which located in high latitudes and rice suffered by the single controllable factor as cool temperature frequently, and that the topographic correlate group is another regionality formed in the bad harvest region that located in lower latitudes than the former group and bad harvest derived by numerous factors presumably.
Therefore, the bad harvest comes from the sea of Okhotsk at Hokkaidô, and from the Pacific at the region of N-E type, but such a direction is not find in the bad harvest region of the S-W type.抄録全体を表示PDF形式でダウンロード (579K) -
木村 吉郎1953 年 8 巻 3-4 号 p. 140-142
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーThe thirty eight successive years' statistics from 1912 to 1949 of rice production per unit area (=tan) in each of the eleven counties of Hokkaidô prefecture were analyzed applying the definition of bad harvest as given formerly by the author being taken into account.
From the chronological data on rice yield during thirty eight years at those eleven counties, it was concluded that Oshima Country belongs to the north-east type, Hiyama and Shiribeshi to the intermediate type and other eights to the north type in regard to bad harvest (Fig. 8). It was observed that the north type consisted of four regional linkage groups; I-IV, between the trans-mode percent and the estimated rice production (koku/tan) for 1950 (Fig. 9), and these groups are laid in a wavy arrangement from north-east “Okhotsk Sea Coast” of Abashiri Country to south west (Fig. 10). Therfore, the bad harvest of Hokkaidô Prefecture might come from the Okhotsk Sea.
she fallawing summary may be also made i) the trans-mode percent of the coastal country in the same linkage grooup is higher than the basins, ii) the Pacific coastals higher than the Japan Sea coastals, and iii) the higher the trans-mode perccent the lower the rice harvest (koku/tan) in all above cases.抄録全体を表示PDF形式でダウンロード (566K) -
小沢 行雄, 坪井 八十二1953 年 8 巻 3-4 号 p. 143-145
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーAs the 2-nd survey at Aoki, the authors observed max. and min. air temperature for forty days in July and August, 1952. The results obtained are as follows.
(1) The distribution of max. temp. has same tendency throughout four seasons. That is, it is much influenced by direction and gradient of inclination, width of valley, and etc. But on a cloudy or rainy day, it accords with law of air temperature decrease. (c. f. Fig. 1)
(2) The distribution of the min. temp. accords with law of air temp. decrease on a cloudy or rainy day, and is fairly complicate on a fine day. It has, however, the very opposite tendency of winter. That is to say, the min. temp. is higher at low place than at high place, in summer. (c. f. Fig. 2)
(3) It decreases diurnal range of air temp. from mid. of June to August to exist paddy field largely. (c. f. Tab. 1)抄録全体を表示PDF形式でダウンロード (580K) -
中原 孫吉, 三寺 光雄1953 年 8 巻 3-4 号 p. 146-148
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーAuthors paint out the relation between rice culture and weather condition and clarify the affecting factors both favourable and injurious to the good harvest of rice-crop in Sado Island.抄録全体を表示PDF形式でダウンロード (542K) -
八鍬 利助1953 年 8 巻 3-4 号 p. 149-154
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (1041K) -
大後 美保1953 年 8 巻 3-4 号 p. 155-156
発行日: 1953/08/01
公開日: 2010/02/25
ジャーナル フリーFrom the date of harvest experiments at the agricultural experiment stations of each prefecture in Japan, the author calculated out the correlation coefficients between the stem length and weight per sho of paddy rice and the weather factors, such as air temperature, precipitation and sunshine. The results are shown in Tables 1, 2 and 3.抄録全体を表示PDF形式でダウンロード (333K)
- |<
- <
- 1
- >
- >|