巻号一覧
8 巻 (1953)
- 3-4 号 p. 77-
- 1-2 号 p. 1-
8 巻, 1-2 号
選択された号の論文の24件中1～24を表示しています
- |<
- <
- 1
- >
- >|
-
佐藤 正一1953 年 8 巻 1-2 号 p. 1-3
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリー實際の水田に於いては, 氣温・水温・地面及び地中温は夫々異り, その日變化・季節變化も個有であるから, 跳等が稻に及ぼす影響を考えるには, 動態にある圃場温度を適當にまとめてみる必要がある。こゝでは地温を主對象として取扱つた。
稻えの影響の點からは, 地面より1尺深の土層に就いて, 日平均の地層平均温度を求める。或は其れを表層と下層に分けてみる (第II項及び (1)～(3) 式を參照)。
暖地・寒地の種々の水田實測よりすれば, 固定的な恒温槽實驗によつて稻に對する最適・最高・最低温度と認められて略々常識的になつているものよりも各數度低い所に, 圃場の地層平均温度の最適・最高・最低をとつてよいと思われる (第III及びIV項參照)。
地温の日較差は必須條件ではなく, 之の大きいほど良いとは限らず, 平均的な適温が大切である。又, 水及び表層地温の日振幅は, 過高温や過低温の害を夫ゐ反對方向の温度變化によつて償い輕減する點が重要である。抄録全体を表示PDF形式でダウンロード (196K) -
上原 勝樹, 磯崎 義政1953 年 8 巻 1-2 号 p. 4-6
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThis report is the outline of the results of the study from April 21 to May 11 in 1952 on the micrometeorological observation both in and out of each cap made of vinyl chloride film, paraffin, cellophane, oil paper and glass and is intended for getting a reference material for the hot-cap culture of vegetable crops.
The summary of this report is as follows
(1) Course of solar radiation for the day in each cap is shown in Table 1.
(2) Daily course of the maximum and minimum temperature in each division of test is shown in Fig. 1.
(3) Daily course of the evaporation in each cap is shown in Table 2 and 3.
(4) Distribution of ground temperature in the cellophane and vinyl chloride film caps is shown in Fig. 2.抄録全体を表示PDF形式でダウンロード (577K) -
坪井 八十二, 本田 勲夫1953 年 8 巻 1-2 号 p. 7-11
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーIn the paddy field being irrigated continuously with cold water, horizontal distribution of both water and soil temperature at nine points and vertical distribution of air temperature at three points, i.e. water inlet, center and water outlet, were measured on a clear day in July and August, 1952.
The results obtained are as follows:
1) On a sunny day in summer, cold water (14-20°C) is warmed up strikingly in the paddy field, although the sunlight is restricted by the plant cover. On 27th of July, for example, water temperature of 34°C was observed at the water outlet.
2) In each figure of horizontal distribution of water and soil temperature for every hour, isothermal lines are represented by concentric circle with the center at the inlet.
3) Diurnal movement of isothermal lines in those figures has a interesting periodicity, and between 10 and 15m from the inlet there is a noteworthly zone showing the maximum of rising up of water temperature.
4) Diurnal changes of vertical temperature distribution at three points with different water temperature are shown in fig. 4. This figure show that types of vertical distribution of temperature in paddy field are closely related to size and density of rice plant and are modified remarkably by water temperature The nfluence of water on the temperature of air layer above it is found to be higher in night than in day time, and the height of influence goes up with growth of the plant.抄録全体を表示PDF形式でダウンロード (880K) -
西内 光1953 年 8 巻 1-2 号 p. 14-16
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThe index of temperature climate at the limits of water rice crop culture were researched by collating the horizontal and vertical distribution of rice culture and the isopleths concerned with temperature climate, in the world, as the plate.
It was determined that the mean air temperature of the warmest month at the limiting region is 20°C and the rice yield at the region where the accumulative temperatuxe through the warm season, (above 10°C) is avove 3500°C is thermally safe.抄録全体を表示PDF形式でダウンロード (593K) -
茶屋道 久吉1953 年 8 巻 1-2 号 p. 17-18
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーPDF形式でダウンロード (318K) -
木村 吉郎1953 年 8 巻 1-2 号 p. 19-22
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリー昭和24年の4～10月に亘る7カ月間, 青森縣内の18觀測地點における毎日午前10時の氣温と風向とを整理して, 各月別の4方位風向別氣温即ち風温を求め, その平均値に對する4方位の風温偏差を考察した結果, 次のよ5な風温特性が認められた。
偏東風温は盛夏の6, 7, 8月において4方位風温中最も低温を示すから, 盛夏低温風ともいうことが出來よう。春秋の候には偏差0℃附近にまで上昇して偏北風よりも暖いことが認められた。
偏北風温は盛夏の3カ月間, 偏東風に次いで低温を示すが, 春秋の候には偏東風よりも却つて低温であるから, この風は常時低温風とも解される。その風温偏差は7カ月平均値においても, またsにおいても共に, 4方位風温中最低又は最小を示している。
偏西風温は盛夏の3カ月間だげ4方位風温中の最高を示すが, 春秋には0℃附近まで低下するから, 盛夏高温風とも解される。しかしその高温偏差は偏東風の低温偏差ほどに著しくはない。
偏南風温は盛夏の3カ月間, 偏西風温に殆ど接近して高温を示すのみでなく, 春秋にも比較的高温であるから常時高温風ともいえよう。その風温偏差7カ月間のxは4方位風温中の最高を示し, sは偏北風温に次いで小さい。
これら4方位風温偏差間のrを求めた結果, 相對する東:西風温又は南:北風温の間には-0.98のrで0.1%水準の有意差をもつ殆ど1直線状の高い相關々係が認められたが, 隣接風の東:北, 東:南, 西:北, 西:南の間には5%水準でも有意のrは認められなかつた。
偏南 (北) 風温が常時高 (低) いのは, この資料を取材した觀測地18點がN41°附近に位置しているための, 北半球中緯度地帶の一般的特性によるものと考えられ, 偏東 (西) 風温が盛夏に低 (高) いのは, 東高西低の夏型氣壓配置に影響される結果によるものと考えられる。從つて冬季には逆に偏東 (西) 風が高 (低) くなるべぎことが豫想され, 兩季の轉換期に當る春秋の候には各々移行して偏差℃附近に位置するという結果になつたものと推定される。抄録全体を表示PDF形式でダウンロード (738K) -
篠原 久男1953 年 8 巻 1-2 号 p. 23-24
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーIn this paper the anther studied on the air temperature of which influences the first flowering-date of the flowering cherry at the five places in Korea. Each periods which air temperature influence first flowering. Mate is as follows. And() shows daily mean air temperature °C.
Pusan Feb. 12 (2.5)-Apr. 3 (10.3). Wonsan Feb. 10 (-2.8)-Apr. 21 (10.2).
Mokko Feb. 24 (2.1)-Apr. 10 (10.2). Sonchin Feb. 15 (-3.0)-May 6 (9.3).
Chonju Feb. 11 (-0.9)-Apr. 12 (10.3).抄録全体を表示PDF形式でダウンロード (295K) -
1953 年 8 巻 1-2 号 p. 24
発行日: 1953年
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (142K) -
測候所の値の適用範園について宇佐美 龍夫, 能勢 朝夫, 市川 正夫1953 年 8 巻 1-2 号 p. 25-28
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリー測候所における氣候な示す値が, そこ為取園む, どの位の廣さの範圍まで適當しうるかを決定すること, つまり測候所の勢力圏といつたものな定めることは農業氣象的見地からみて重要な問題である。こゝでは, それな決定する方法についてのべ, 且氣温と降水量についての實例な示してある。抄録全体を表示PDF形式でダウンロード (640K) -
吉田 作松, 佐藤 米藏1953 年 8 巻 1-2 号 p. 29-30
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThe authors measured the insolation from the whole sky by Robitzsch Pyrheliograph under the apple trees at Yabase fruit experimental garden of Akita prefecture from April to November. They compared those with the values at the neighbouring meteorological station and found that the seasonal variation of the gained ratio of insolation under the apple trees varies with the weathers, that is, the gained ratio in clear weather is greater than that in rainy or densely cloudy weather from about the middle of June to the end of November (Fig. 1). They thought that such phenomenon results from the seasonal variation of the thickness of the layer of branches and leaves which the direct solar radiation passes. The diurnal variation of the gained ratio in each season, as shown in Fig. 2, proves the correctness of this reasoning-that is, only in the season when the sun's altitude is high (see B-late in July) the gained ratio is remarkably great in the time of the high altitude (higher than 50°) of the sun in the day.抄録全体を表示PDF形式でダウンロード (297K) -
横田 廉一1953 年 8 巻 1-2 号 p. 31-32
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThe amount of rain actually getting to the roots of crops in growth is smaller than that of rain falling on the whole crops. Needless to say, this is simply because the rain-water is not merely retained temporarily but is scattered round in all directions by the stems and leaves of the crops.
According to the writerd's observation, the precentage of the amount of rain actually reaching the roots of crops in growth to that of rain falling on the whole crops may be expressed by the following formula.
y=a-bx3
(In the above formula, x stands for the number of days after the germination of crops.)
The relation shown by the formula exists only when rainfall is not markedly great.抄録全体を表示PDF形式でダウンロード (236K) -
小地域内の氣温日變化の比較 (その3)吉野 正敏, 福宿 光一1953 年 8 巻 1-2 号 p. 33-36
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーWe tried a local climatological study to find out the differences on the diurnal change of the air temperature of southern and northern valley sides in Oku-Chichibu mountain land, Saitama Prefecture. Portable thermographs were set at 50cm above the ground of the 4 observed points. Their topography are shown in the lower part of Fig. 1. Using the observed values, the daily temperature change on March 30th and 31st. 1951, is given in isopleths. (upper part of Fig. 1)
(1) Crowded isotherms are seen after the time of sunrise and temperature at St. 1 and 2, ubac slope facing north, rises earlier than at St. 3 and 4, adret slope facing south.
(2) St. 1 has lower maximum temperature which appears earliest in the observed area, not only in spring but also in the other seasons. This is considered as a consequence of the time of the sunset that comes earlier at the ubac than the adret by the effect of topography.
(3) Minimum temperature happens almost at the same time at each station and slight inversion was seen.
(4) Standard deviation for 6 minutes change of the air temperature at 4 stations is 0.2°C in the daytime and 0.1°C at night. But, since their change does not occur in parallel after the sunrise, it reaches 0.4-0.5°C after that time, when the change of the air temperature is much larger than the time of sunset. (Fig. 2)抄録全体を表示PDF形式でダウンロード (762K) -
小地域内の氣温日變化の比較 (その2)吉野 正敏1953 年 8 巻 1-2 号 p. 37-40
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーIn this paper, the diurnal change of air temperature at the ridge, slope and bottom in a small valley of Nishiura, Shizuoka Prefecture, is studied. The situations of the observed points along the cross-section of the valley are shown in the lower part of Fig. 1. Portable thermograph was set at a height of 120cm above the ground at each station.
1 Using the observed results, the diurnal change of the air temperature on March 21-22, 1952, are shown by isopleth in Fig 1.
2. Differences of the air temperature in this area are not exceeded 1.5°C in the daytime and at night, except after sunrise. The air temperature at the ridge rises the earliest and that of valley bottom rises the latest after the time of sunrise. Therefore, the lapse rate at the time reaches about -6°C/30m on its maximum.
3. Cold rir streams which appear period tally every 1-1.5 hour at night were clearer at the ridge than the valley bottom.
4. Standard deviation for 6 minutes change of the air temperature at 4 stations is 0.4-0.5°C from the time of sunrise to the time of maximum temperature, 0.3°C to the time of sunset, and 0.1-0.2°C at night
5 The greater the wind velocity at the ridge, the greater the difference of the air temperature at the ridge and the valley bottom at 14 hour becomes.抄録全体を表示PDF形式でダウンロード (801K) -
中原 孫吉, 田原 虎次, 中澤 宗一1953 年 8 巻 1-2 号 p. 41-44
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーWe have analysed the influence of the baido (ridging) condition, prevailing in, the western part of Tokyo in the course of wheat cultivation during the cold season.
We have made experiments for lots, that is, double, single, and no baido (ridging), in order to test the significant difference among them. The design of the plots and the cross-section of each plot were shown in Fig. 1. and 2.
The soil temperatures were observed once a day at 10 every morning with the the soil moisture content, at the soil surface, 5cm and 10cm below the surface.
The analysis was carried through by the methods of analysis of variance.
Although the difference of the soil temperature and the content of soil moisture during the growing season can be seen among these lots as shown in Fig 3, 4 and 5, as for our jungement concerns, there is no significant amount of variation among the grain yields by the use of lots.抄録全体を表示PDF形式でダウンロード (669K) -
井上 榮一, 谷 信輝, 今井 和彦1953 年 8 巻 1-2 号 p. 45-48
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThe vertical distributions of wind velocity over various fields under several conditions were observed being made use of several small Robinson cup anemometers installed to the pole of 6m high.
From the obtained results, the logarithmic law is adopted as follows:
U(z)=2.30V*/klogZ-d/Z0
where Z=height from the soil surface, k=0.45, V*=friction velocity, d=zero plane displacement, and Z0=roughness parameter.
The observed values of d and Z0 as well as several relevant quantities are shown in Tabl 5.抄録全体を表示PDF形式でダウンロード (659K) -
松野 滿尋已, 仁科 伸彦, 山中 圀利, 久保 次郎1953 年 8 巻 1-2 号 p. 49-51
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーWhen we examine the amount of the monthly or annual amount of precipitation in a certain region, we find 3 types as follows.
In the above 3 types, the type A has the occurance higher than the others. We are therfor only confined to the type A to study the distribution of precipitation.
We take as the height of the place the mean height of the area of 2km2 around that place to investigate the relation between the height and the precipitation.
Using of the topographic map made of the contours of such height, the region is divided into several sections. The section is further divided into several subsections in which way the precipitation is considered as a function of the height.
So, the amount of precipitation in the place is easily calculated from the mean height of the subsection.
By dint of the above method, we are able to determine the distribution of the monthly or annual amount of precipitation in much elegant way.抄録全体を表示PDF形式でダウンロード (484K) -
1953 年 8 巻 1-2 号 p. 51-51,68
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーPDF形式でダウンロード (347K) -
松原 茂, 中峠 哲朗1953 年 8 巻 1-2 号 p. 52-54
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーWe take the considerations about the heat flows into the earth on the basis of the microclimatic observations near the ground of the high mountain and the sea-shore.
Now, we do not make use of the ordinary method of the harmonic analysis. By assuming the diurnal variation of the thermal diffusivity, we can see that the earth temperature has the following expression:
θ=R0+R′sin{ωt+γsin(ωt+δ)+δ′}
By the above expression, we calculate the diurnal variation of the heat flow into the earth, considering the various meteorological elements near the ground.抄録全体を表示PDF形式でダウンロード (428K) -
地温・土壤水分の變化に就て原田 景次, 鈴木 信治1953 年 8 巻 1-2 号 p. 55-56
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThis experiment was made to see the effect of intercropping of rape as cover crop on the wind erosion control and the extensive utilization of upland field area. The results obtained by the rape covering earth were as follows,
1. Soil moisture increased.
2. The minimum temperature became higher.
3. The amount of frost-column and freezedlayer decreased.
We could expected that the above results would take effect on the wind-erosion control.
The yield of wheat in every intercropping plots was less than 75% compared with the wheat only plot, but obtained the rape forage.抄録全体を表示PDF形式でダウンロード (356K) -
宮坂 増穂1953 年 8 巻 1-2 号 p. 57-60
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーThe brief Résumé of investigation and study on the water erosion in Hokkaido points out the next facts.
(1) If the soil is not protected by a good vegetative cover, rainfall of short time disperes and transport the soil particles.
(2) The up and down traffic of Dosori on the vegetative cover of the inclined land accelerates the rill erosion and the gully erosion.
(3) The gully erosion occure at the position where the three inclined lands take shape U form.
(4) Frequently the gully erosion occures at the agricultural road.
(5) The direction of the ridge in the field is influenced by the long edge of the boundary of field.
(6) The contour farming and the green belt prevent or lighten the water erosion.
(7) The resistance of the soil to dispersion and movement is increased by the vegetable manure.抄録全体を表示PDF形式でダウンロード (754K) -
田中 貞雄, 谷澤 恒夫1953 年 8 巻 1-2 号 p. 61-63
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーSome characteristics of natural wind have been investigated in front and back of plain shelter-hedges, 80cm high and 15m long, of several kinds of type having interstice of 80% (type A), 50% (B), 20%(C) and 0% (D) respectively. Being inspected the horizontal distributions of wind velocity at the height of 50cm, it has been made clear that there exist the zone of acceleration just behind the hedges of tybe A and B and the zone of deceleration for C and D, which are considered to be due to the local blowing and the interruption of wind respectively.
The vertical distribution of wind velocity for the hedge A has been shown to keep almost the logarithmic law except at the station extremely near the hedge, and, on the other hand, those for B, C and D have been shown to increase discrepancy from the logarithmic law at heights below 1m as the degree of interstice decreases.
The degree of wind wind velocity turbulence increased just behind the hedges has tended to decrease with the distance from hedges, and it has been shown that at the distance of 20 times of hedge height the influence of hedge has either disappeared for A and B or remained for C and D.抄録全体を表示PDF形式でダウンロード (535K) -
栃木縣北那須地帶について原田 景次, 鈴木 信治1953 年 8 巻 1-2 号 p. 64
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーPDF形式でダウンロード (226K) -
農業氣象學の一方向西内 光1953 年 8 巻 1-2 号 p. 65-67
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーPDF形式でダウンロード (600K) -
桑山 覺1953 年 8 巻 1-2 号 p. 69-71
発行日: 1953/03/31
公開日: 2010/07/01
ジャーナル フリーPDF形式でダウンロード (670K)
- |<
- <
- 1
- >
- >|