巻号一覧
71 巻 (2000)
- 6 号 p. 777-
- 5 号 p. 607-
- 4 号 p. 447-
- 3 号 p. 299-
- 2 号 p. 143-
- 1 号 p. 1-
前身誌
71 巻, 2 号
選択された号の論文の32件中1～32を表示しています
- |<
- <
- 1
- >
- >|
-
原稿種別: 表紙
2000 年 71 巻 2 号 p. Cover1-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (105K) -
原稿種別: 表紙
2000 年 71 巻 2 号 p. Cover2-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (105K) -
原稿種別: 付録等
2000 年 71 巻 2 号 p. App1-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (281K) -
加藤 邦彦, 小原 洋, 中井 信, 東 照雄原稿種別: 本文
2000 年 71 巻 2 号 p. 143-153
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーThree-hundred-and-sixty-six samples of recent alluvial surface soils collected in Japan were analyzed for total elemental composition. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) was used to analyze 18 elements (Al, Ba, Ca, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, Sr, Ti, V and Zn). The amount of SiO_2 was calculated by subtracting the sums of the oxides of major elements (Al_2O_3, CaO, Fe_2O_3, K_2O, MgO, MnO_2, Na_2O, P_2O_5, TiO_2), minor elements (Ba, Co, Cr, Cu, Ni, Pb, Sr, V, Zn) and ignition loss from total soil weight. To analyze the differences in elemental composition of samples, statistical calculation analyses including correlation analysis, principal component analysis and cluster analysis were used. We clarified the background level and distribution of elemental composition. Some elements like Si, K and Ba were abundant in the southwestern part of Japan, and that coincides with the distribution of acidic rock. On the other hand some elements like Mg, Fe, Co, Ti, V, Al and Mn are abundant in the eastern part of Japan and selected regions which seem to be affected by volcanic ash. From principal component analysis, the elemental composition of recent alluvial soils was explained by the first component of felsic to mafic nature, by the second component of mobility of each element and by the third component of the degree of influence of hydrothermal deposit ( or of the degree of oxidation and reduction). From cluster analysis, 6 clusters were set up. Each cluster was characterized based on the principal component score and mean elemental composition. By calculating the ratio of the 6 numerically obtained clusters in the order and suborder of classification of cultivated soils in Japan, the following points were clarified: 1) The coarser the soil texture and the grayer the color of subsoil, the more felsic elemental composition. 2) In the case of Brown Lowland soils, they were more felsic when the soil has mottles.抄録全体を表示PDF形式でダウンロード (1240K) -
伊藤 喜誠, 豊田 剛己, 木村 眞人原稿種別: 本文
2000 年 71 巻 2 号 p. 154-164
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーThe effects of soil solarization and fumigation by 1,3-dichloropropene (D-D) or sodium methyl dithiocarbamate (metam sodium) on the soil-borne plant pathogen Phomopsis sclerotioides and soil microbial community were investigated. An experimental field at the Kanagawa Agricultural Research Institute, Kanagawa Prefecture, Japan, was treated as follows : (i) non-treated; (ii) non-treated, amended with 10 t ha^<-1> farmyard manure (FYM) ; (iii) solarized for ca. three weeks in August to September after the amendment of FYM ; (iv) solarized and fumigated with 700 L ha^<-1> D-D after the amendment of FYM ; (v) solarized and fumigated with 500 L ha^<-1> metam sodium ; and (vi) solarized and fumigated with 500 L ha^<-1> metam sodium after the amendment of FYM. Treatments (iii) to (vi) controlled the root rot of melon by the pathogen to some extent and the growth of melon plants increased using these field sanitarization treatments. About 50% of the population of total and culturable bacteria were killed by treatments (iii) to (vi), with recovery to levels prevailing in nontreated soils 35 d after cessation of the sanitarization treatments. There appeared to be changes in C-utilization (Biolog GN) profiles in the treated soils until 63 d later. However, the effects of the treatments disappeared after 193 d later. This study demonstrates that soil solarization and fumigation controlled the root rot of melon by Phomopsis sclerotioides to some extent, and that the effects of soil solarization and fumigation on soil microbial community were significant for some period, but might disappear in the following spring.抄録全体を表示PDF形式でダウンロード (1160K) -
川東 正幸, 隅田 裕明, 山本 一彦原稿種別: 本文
2000 年 71 巻 2 号 p. 165-170
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーChemical properties and organic matter compositions of soil solutions collected by porous cup (PC), centrifugation (CF) and shaking extraction with distilled water (SE) were investigated. Soil solutions were obtained from surface and sub-surface layers in Umbric Andosol under forests. Yields, total organic carbon (TOC) and organic matter compositions of the soil solutions were different with the sampling methods. Yields, TOC, A_<400> and pH were higher in soil solutions collected by PC than in soil solutions collected by the other two methods. It was supposed that organic matter and bases were extracted from soil particles and humus in the PC sampling process. Proportions of unquantified organic carbon (uqoc) in TOC were high in soil solutions obtained by SE. SE should extract slightly soluble organic matter. On the other hand, in CF, soil solutions could be obtained from bulked soil in a short period of time, and variations in data were smaller than the other methods. Therefore, centrifugation from bulked soils would be a suitable method for obtaining soil solutions. Uqoc fractions, which were dominant in all sampling methods, were considered to be relatively high molecular weight fractions consisting of polysaccharides and aliphatic chains. Sugars were dominant in quantified organic matter.抄録全体を表示PDF形式でダウンロード (766K) -
江口 亨原稿種別: 本文
2000 年 71 巻 2 号 p. 171-178
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーA pot experiment was carried out using boron-deficient alluvial soil to investigate the effect of boron on growth, yield and content of protein and fat in grains of soybean. 1) Visual symptoms were not observed in the boron-deficient plot until the period of terminal leaf development. 2) The color of the leaves remained green during the harvesting stage in the boron-deficient plot. Delay of maturity was clearly observed in the boron-deficient plot compared with the boron-treated plot. 3) Many sterile pods and immature grains were observed in the boron-deficient plot and yield of soybean was decreased to 67% of the boron-treated plot, resulting in a severe decrease in soybean yield. 4) Boron content of the grains of the boron-deficient plot was 4.2 mg kg^<-1> compared with 29.8 mg kg^<-1> of the boron-treated plot. 5) Decreases in the quantities of crude fat and crude protein were observed in the boron-deficient plot; especially, the crude fat quantity decreased remarkably. 6) In soybean grains collected from 36 different areas in Japan, a positive correlation was observed between boron content and crude fat content, but the correlation coefficient was low. However, among micronutrients, the boron content of grains showed the highest correlation coefficient to crude fat content. These results clearly show that not only yield but also the fat of grains is affected strongly by boron nutrition.抄録全体を表示PDF形式でダウンロード (1534K) -
浅見 輝男, 佐伯 聡, 後藤 浩志, 中澤 正典, 久保田 正亜原稿種別: 本文
2000 年 71 巻 2 号 p. 179-186
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーSilver is among the most toxic of heavy metals to a range of life forms and metabolic processes. Silver has been claimed to be one of the priority pollutants by the EPA of the USA. The Japan Association of Industrial Health recommended a threshold value for silver in the working environment of 0.01 mg m^<-3>, which was lower than the threshold values both for cadmium and mercury (0.05 mg m^<-3>). Therefore, it is very important to investigate the environmental contamination of silver. We had taken the soils and sediments near mines and/or smelters, and determined the concentrations of silver. The main results are as follows. 1) The wastewater containing silver from mines and/or smelters runs into rivers. Paddy soils irrigated by these river waters are contaminated with silver in the downstream areas far from the contamination sources. On the other hand, the silver in dusts and fumes from chimnies falls on the soils near the contamination sources and highly contaminates the soils. 2) Soil silver tends to accumulate in the surface horizons, especially organic-rich surface horizons. 3) The surface soils in 7 areas and the sediments in 5 areas near mines and/or smelters were taken, and the silver concentrations were determined. The geometric means of the soils were 0.172-1.47 mg kg^<-1> DW and maximum values were 0.417-9.05 mg kg^<-1> DW. The geometric means of the sediments were 0.772-11.8 mg kg^<-1> DW and maximum values were 2.34-125 mg kg^<-1> DW. 4) Correlation coefficients between the concentrations of silver and those of cadmium, zinc, lead or copper were calculated. In the case of the soils and sediments near the mines and/or smelters producing zinc, lead and/or copper, high correlation coefficients were obtained. Nevertheless, a high correlation was not obtained in the soils near mines and smelters producing silver using silver ore.抄録全体を表示PDF形式でダウンロード (1012K) -
増島 博原稿種別: 本文
2000 年 71 巻 2 号 p. 186-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (161K) -
伊藤 豊彰, 井上 博道, 三枝 正彦原稿種別: 本文
2000 年 71 巻 2 号 p. 187-193
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーThe objective of this study was to clarify the effects of single basal co-situs application of polyolefin-coated urea (POCU) and ammonium sulfate (AS) on crop emergence in no-tillage and tillage cultivation of dent corn. Field experiments were conducted for three years (1996-1998) in Andisol. Emergence percentages of corn in the POCU plot were high and varied from 81 to 93% under different soil moisture conditions, whereas those in the AS plot ranged from 22 to 95%. Severe salt damage to the crop was observed in the AS plot in 1996 due to less precipitation after sowing. In the AS plot, the emergence percentage of corn in the no-tilled plot was higher than that of the tilled plot. POCU maintained a low electrical conductivity (EC) in the soil solution around the seeds. The soil solution EC of the no-tilled plot was lower than that of the tilled plot because of the higher water potential in no-tilled soil. The reason for the higher EC in the AS plot was ammonium sulfate. Accordingly, single basal co-situs application of POCU is a suitable method for the fertilization of no-tilled soil systems.抄録全体を表示PDF形式でダウンロード (871K) -
高山 俊夫, 佐藤 祐一, 中島 進原稿種別: 本文
2000 年 71 巻 2 号 p. 194-203
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーTo clarify the geochemical and environmental behaviors of the high manganese content of sediment point 5 in Lake Biwa reported previously by S. Nakashima, some samples of five sediment points (1-5) and two sediment core parts (4 cm depth at 2 cm intervals, L1-L3, and 6 cm depth at 2 cm intervals, H2-H4) were collected from the northern and sourthern parts of the lake. The organic matter, minerals and phosphorus species in the bottom sediment were analyzed by solid-state ^<13>C, ^<27>Al, ^<29>Si and ^<31>P NMR. The organic matter : At the sediment points (1, 2, 3) and sediment core parts (L1-L3), these samples appear to have a high amount of aromatic compounds. The aromatic compounds are relatively constant regardless of depth in the core parts (L1-L3, H2-H4). At point 5, non-aromatic compounds appear be present in high amounts. So, non-aromatic compounds seem to tend to concentrate in areas of high manganese content. The minerals : At sediment point 5, minerals mainly consist of (2 : 1) layer-clay mineral. The clay mineral holds together simply with heavy metals such as manganese. As a result, it seems that manganese is enriched in the sediment point. The phosphorus species : At points 3, 4 and H3, the organic phosphorus species is the major group. At point H4, an inorganic orthophosphate (PO_4^<3->) appears in high amount, but the remarkable enrichment of manganese at point 5 could not be assumed. In conclusion, we presumed that organic matter and minerals play an important role in the enrichment of manganese content at sediment point 5 of Lake Biwa.抄録全体を表示PDF形式でダウンロード (959K) -
山内 益夫, 楊 秀珍原稿種別: 本文
2000 年 71 巻 2 号 p. 204-209
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーTo examine the minimum levels of nitrogen concentration in leaves at harvest time needed for high-quality cut-flower stock, 'Asanami,' the effects of nitrogen treatments on the concentrations of phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg) in the leaves and stem (experiment 1), and the influence of the period of nitrogen (N) supply on growth and cut-flower quality (experiment 2) were observed. We designed two kinds of experiments in which plants were grown by the use of sand cultures supplied with 130-200 mL of nutrient solution daily. The first experiment was designed to use a nutrient solution containing 10, 20, 40, 60, 100 and 180 g kg^<-1> N. The second experiment was designed to use a nutrient solution without nitrogen on days 17, 25, 32, 39, 45, 51 and 60 after transplanting, in contrast to a normal solution, which contained 100 g kg^<-1> N. The minimum level of nitrogen concentration that resulted in good cut-flower quality was about 30-32 g kg^<-1> in leaves at the upper 11th position. This level was sufficient for nitrogen absorption to continue until visible flower bud or the beginning of flowering. There was a high positive correlation between N concentration and K (stem only), Ca (except 180 N), P and Mg concentrations in the leaves and stem, respectively, but K concentration in the leaves decreased when N increased over 40 g kg^<-1> N.抄録全体を表示PDF形式でダウンロード (726K) -
江 耀宗, 李 喬木, 松本 聰原稿種別: 本文
2000 年 71 巻 2 号 p. 210-215
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーIn the present study, incubation experiments were done using different plant residues. Alfalfa (Medicago sativa L.), clover (Trifolium repens L.), duckweed (Lemna Paucicostata Hegelm), water hyacinth (Eichhornia crassipes Solms-Laub), rice (Oryza sativa L.) and wheat (Triticum aestivum L.) were added to the paddy soil on the basis of the same C content. Our research attempts to reveal the CH_4 and CO_2 formation process from paddy soil and the relationship between the amount of CH_4, CO_2 and carbohydrate composition of the plant residues. The results were as follows. The formation pattern of CH_4 differs according to different plant residue applications. The alfalfa and clover were faster, and the duckweed and water hyacinth were slower in the early incubation period. The amount of methane produced during the 12th week of incubation varied among various kinds of plant residues. It was in the order of : clover>alfalfa>water hyacinth>duckweed>rice>wheat. The amount of CH_4 was higher than that of CO_2 throughout the different plant residue applications. The CH_4 and CO_2 contents showed positive regression with reducing sugar, non-reducing sugar, starch and hemicellulose amount in plant residues. The CH_4 and CO_2 contents showed negative regression with the cellulose amount in plant residues.抄録全体を表示PDF形式でダウンロード (716K) -
熊澤 喜久雄, 山本 洋司, 朴 光来, 田村 幸美原稿種別: 本文
2000 年 71 巻 2 号 p. 216-224
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーThe concentration of inorganic nitrogen and δ^<15>N values of NO_3-N in the Tamagawa River were measured. In the upper stream of the river, the concentration of NO_3-N and δ^<15>N values were low since the nitrogen origin was considered to be coming from rainfall and forestry soil. But the Nogawa and Senkawa rivers, which rise as spring water from the plain, contained high NO_3-N and δ^<15>N values in their upper streams as compared to other rivers. The NO_3-N concentration and δ^<15>N values of the river water became higher, especially as the water mixed with the filtrated sewage water which flowed down from several sources to several river points, with δ^<15>N values of more than +10‰. Ammonium nitrogen had been detected in one of the rivers (i.e., Senkawa River), but was rapidly decreased by nitrification as the water flowed down stream.抄録全体を表示PDF形式でダウンロード (1103K) -
島田 聡, 水野 直治原稿種別: 本文
2000 年 71 巻 2 号 p. 225-230
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPowdery scab is a skin disease of potato tubers caused by Spongospora subterranea. The effect of a special fertilization method on powdery scab in potato was investigated in the soil area of Eutric Fluvisols in the Oshima region of Hokkaido, Japan. In the growing stage of the potato tuber, the pH of the soil layer where the potato tuber grows was significantly lower when ammonium sulfate was supplied in the rows and phosphate and potassium were supplied throughout the surface soil (special fertilization) than in that of the control group, where all fertilizers were supplied in rows. In the flowering stage, the pH was 5.5 in the control group and 4.5 in the special fertilization group. The occurrence of powdery scab decreased in the special fertilization group. The scab index was 60 in the control group but 26 in the special fertilization group. The average aluminum concentration in the water extraction was 0.35 mg L^<-1> in soil at the pH 4.5. It is estimated that the aluminum concentration in the water extract must be more than 0.5 mg L^<-1> for suppression of the scab severity index to less than 10.抄録全体を表示PDF形式でダウンロード (599K) -
岡本 保原稿種別: 本文
2000 年 71 巻 2 号 p. 231-242
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーDuring a 7-year period, plots of an upland field (Grey Lowland Soil, CoSL, initial pH : 6.3) were treated with various rates (0, 0.5, 1.0 and 2.0 kg m^<-2>) of dewatered sewage sludge twice each year (spring and autumn) just before the planting of spinach and cabbage, respectively (a total of 14 applications). The sludge was conditioned using calcium hydroxide as the coagulant aid. Once each year after the cabbage crop, soil samples were analyzed to observe the changes in the chemical forms and contents of heavy metals (Ni, Cu, Zn and Cd). The contents of heavy metals were also measured in the stems and leaves of both crops after each was harvested. 1) Carbonates of Ni, Zn and Cd, and exchangeable Cu were the predominant forms of the heavy metals analyzed in the sludge before application. 2) Sludge application resulted in pronounced increases in the contents of perchloric acid digestible Zn and Cd and slight increases in Ni and Cu, as analyzed in the top soil (0-15 cm), where most of the heavy metals carried by the sludge were found. In plots with the highest rate of sludge, the Zn content in the top soil increased from 76.5 mg kg^<-1> before application to 208 mg kg^<-1> after the 14th application. The Cd content increased from 0.24 to 0.47 mg kg^<-1>. At this time, Zn and Cd contents in the top soil were approximately two times higher than those in the subsoil (15-30 cm). In contrast, total Zn and Cd taken up by the crops during the experimental period decreased from 250 and 1.8 mg m^<-2> in the control plot to 200 and 0.6 mg m^<-2> with the highest rate of sludge, respectively. 3) The Fe-Mn oxides of Ni, Zn and Cu, and carbonates of Cd were the most abundantly increased forms of the heavy metals in the soil due to the sludge applications. In contrast, the contents of exchangeable Zn and Cd decreased with sludge application, thereby concomitantly restricting the mobility and plant availability of the metals. 4) The increase rate of the Fe-Mn oxides fraction of Zn and Ni, and carbonate fraction of Cd started to plateau after the 4th application when the soil pH also plateaued. This phenomenon suggests that an excessive amount of calcium over the cation exchange capacity of a soil might be a factor suppressing the sorption of heavy metals to soil.抄録全体を表示PDF形式でダウンロード (1370K) -
藤井 弘志, 小南 力, 安藤 豊原稿種別: 本文
2000 年 71 巻 2 号 p. 243-245
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (372K) -
高橋 茂, 山室 成一, 小野 信一原稿種別: 本文
2000 年 71 巻 2 号 p. 246-248
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (410K) -
牛尾 進吾, 吉村 直美, 斉藤 研二, 中島 信夫原稿種別: 本文
2000 年 71 巻 2 号 p. 249-253
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (590K) -
佐藤 一弘原稿種別: 本文
2000 年 71 巻 2 号 p. 254-258
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (583K) -
大城 晃, 杉山 泰之, 片山 晴喜, 河村 精, 久田 秀彦, 岡田 長久原稿種別: 本文
2000 年 71 巻 2 号 p. 259-262
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (465K) -
袴田 共之, 波多野 隆介, 木村 眞人, 高橋 正通, 坂本 一憲原稿種別: 本文
2000 年 71 巻 2 号 p. 263-274
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (1542K) -
江頭 和彦, 韓 京龍, 李 宗鉄原稿種別: 本文
2000 年 71 巻 2 号 p. 275-280
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (1017K) -
松本 聰原稿種別: 本文
2000 年 71 巻 2 号 p. 281-285
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (836K) -
金森 哲夫原稿種別: 本文
2000 年 71 巻 2 号 p. 286-293
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (1082K) -
原稿種別: 付録等
2000 年 71 巻 2 号 p. 294-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (102K) -
原稿種別: 付録等
2000 年 71 巻 2 号 p. 295-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (124K) -
原稿種別: 付録等
2000 年 71 巻 2 号 p. 295-296
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (214K) -
原稿種別: 付録等
2000 年 71 巻 2 号 p. 297-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (145K) -
原稿種別: 付録等
2000 年 71 巻 2 号 p. App2-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (713K) -
原稿種別: 表紙
2000 年 71 巻 2 号 p. Cover3-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (92K) -
原稿種別: 表紙
2000 年 71 巻 2 号 p. Cover4-
発行日: 2000/04/05
公開日: 2017/06/28
ジャーナル フリーPDF形式でダウンロード (92K)
- |<
- <
- 1
- >
- >|