耕作土壤學 的英文怎麼說
中文拼音 [gēngzuòtǔrǎngxué]
耕作土壤學
英文
edaphology-
Through analyzing guan zi, zhao guo, fan sheng zhi shu, si min yue ling and other agricultural books, some agronomists on agricultural education, it states that in west han and east han dynasties agricultural science and technology made great progress, such as soil and tillage, drainage and irrigation, farm implements, crop cultivation, gardening, silkworm raising and mulberry growing, environment and ecology, agricultural economics and management
通過對《管子》 、趙過、 《 ?勝之書》 、 《四民月令》等農書及農業科學家農業教育的闡述，指出了兩漢時期的農業教育主要在農業科技教育方面取得進展，具體體現在土壤耕作教育、農田水利教育、農機具教育、作物栽培知識教育、園藝知識教育、蠶桑知識教育、環境生態教育、農業經濟管理教育等方面。When soil antecedent condition is dry and the initial rainfall intensity is high, peak surface runoff also considerably lag behind that of rainfall, because of the formation of temporary relative impermeable top layer ; b ) surface runoff is controlled primarily by infiltration - excess runoff mechanism under unsaturated condition ; the major fraction of surface runoff are dominated by saturated infiltration - excess runoff response, only a small fraction by return flow mechanism when soil is saturated ; c ) subsurface flow is dominated by saturated runoff mechanism, and the duration of subsurface post the rainfall end is dependent upon rather the soil properties than the rainfall characteristics ; d ) subsurface flow intensity in cultivated soil layer ( 0 ~ 20cm ) is high up to 35mm / h when rainfall intensity is up to 120mm / h, indicating the existing of macropores and pipe flow in cultivated layer
2 ）耕作制下紫色土的產流主要機制是： 1 ）當雨前土壤含水量未達到飽和狀態時，表面產流起始時間有明顯滯后現象，這與紫色土的快吸水性和較多非毛管孔隙密切相關；當雨前土壤較乾燥，降雨初期雨強較大時，易形成臨時相對不透水表層，表面產流峰也有明顯滯后現象。 2 ）表面徑流的產流方式主要是超滲產流，當土壤達到飽和狀態后，有四川大學博士學位論文小部分回歸流發生，但主要是飽和超滲產流發生，因為紫色土的相對不透水層和其它透水障礙層不明顯。 3 ）壤中流主要是飽和產流，與降雨過程有明顯的滯后，而且雨停后的壤中流產流歷時與降雨特徵無關。In light of current using situation and drawing on the experience of many scholars researched methods and viewpoints, this thesis made com land, fallow land, orchard, grass land as experimental field in black soil region jlau, which carried out experiment by applying different amounts of n and p fertilization in corn field. by means of collecting the samples of rainfall runoff, erosion silt and surface layer soil before and after rainfall for one year nature precipitation in field, we study the effect of surface runoff on n and p nutrient and fertility degeneration. the results showed : ( l ) there are lots of factors which affect soil erosion and losses of n and p, in which rainfall and rainfall intensity were more important, while rainfall intensity is the most important meteorological phenomena factor
針對當前黑土利用現狀，本文借鑒眾多學者的研究方法和觀點，在吉林農大黑土區選擇利用方式不同的玉米地、休閑地、果園、草地，在玉米區進行了不同數量的施肥，通過野外試驗，採集一年自然降雨產流及泥沙樣品，同時採集降雨前後的耕層土壤樣品，研究了黑土區地表徑流對氮磷養分特徵及肥力退化的影響，結果表明：土壤侵蝕和氮磷的流失受諸多因素的影響，降雨量、降雨強度是重要因子，而降雨強度是影響農田地表徑流養分流失的最重要的氣象因子，特別是暴雨，暴雨徑流中氮磷濃度較平時高得多；隨作物生長，覆蓋度逐漸增加以及不同利用方式下表現的覆蓋度差異，氮磷流失都表現為顯著的差異。Aerodynamic roughness of cultivated soil and its influence on soil erosion by wind in a wind tunnel
耕作土壤表面的空氣動力學粗糙度及其對土壤風蝕的影響The releasing characteristics and availability of nonexchangeable k in cultivated soils were studied by two chemical successive extraction and pot exhaustion
採用2種化學連續提取法及連續耗鉀實驗，研究了幾種耕作土壤非交換性鉀釋放特性及有效性。The available phosphorus contents of the run - off from the plot iii and plot iv were higher than that of other two plots " run - off. the nutriments of sediments from the four plots were higher than the nutriments of soil in the plots. the plot ii and plot iv had the higher enrichness degree of total nitrogen than the other two plots ; the available nitrogen enrichness of sediments from plot iv was the highest, that of from plot illwas the lowest ; the available phosphorus enrichness of sediments from plot iv was the highest, that of from plot illwas the lowest ; the available potassium enrichness of sediments from plot ivwas the highest, that of from plot ii was the lowest
泥沙各種養分含量均高於小區內耕作層土壤中的相應養分含量，表現為：第2 、 4小區的流失土壤全氮養分富集度高於其餘兩個小區；第4小區流失土壤有效氮富集度最高，第2小區次之，而第1小區和第3小區的流失土壤有效氮含量與區內耕層土壤相似；各小區流失土壤中速效磷富集度為第4小區最大，第3小區最小；而第4小區耕層土壤中在流失過程中速效鉀西南農業大學二oo二屆碩士學位論文一積累量最大。The plant kingdoms agree with this as over tilling the soil will disturb the natural biochemistry deep down that has sustained life of the plants the year before
植物王國同意這一說法：因為過度耕作會大大擾亂土壤的天然生物化學成分，從而使其失去前一年支持植物生命的能力。Absolute amounts of soil erosion is not large for the falling gradient in black soil region, but the nutrient is high in erosion soil, the nutrient of erosion soil and runoff is high, which leads to soil fertility degeneration, while n and p nutrient pour into water with surface runoff, it leads to water nutrient enrichment and pollution, and becomes one of confined factors of water nutrient enrichment
吉林農業大學碩士學位論文黑土地表徑流氮磷養分特徵及其與肥力退化的關系由於黑土耕作區坡度平緩，土壤侵蝕的絕對量並不很大，但由於土壤中攜帶的養分高，養分流失的較多，流失的養分將引起肥力的退化，而且氮磷等養分隨地表徑流流出匯入各種水體，引起水體富營養化和污染，成為水體富營養化的限制因子。In research much importance was attached to the study of dry land and the physical, chemical and biologic properties of water land, but the relationship between soil microbes and soil fertility in the paddy field of long - term no - tillage and ridge culture was relatively ignored, so this experiment was conducted for further study
縱觀國內外的研究概況，對旱地的研究比較多，對水田的物理、化學和生物性狀也有研究，但是，對稻田長期壟作免耕條件下的土壤微生物和肥力的關系的研究尚鮮見報道，因而著手于這方面的研究。China agricultural university established an experiment plots in high land of fengning country, hebei province and observed the natural wind erosion. it indicated that, compared with traditional tillage - plowing up the soil in autumn, conservation tillage can reduce 77 % of soil wind erosion. it is necessary to research systematically and comprehensively on farmland wind erosion in order to study further about the effects and mechanism of conservation tillage and to explore the measures of preventing soil wind erosion
中國農業大學在河北豐寧壩上建立農田實驗區，進行自然風蝕觀察，表明與傳統耕作（秋翻地）相比，保護性耕作可以減少土壤風蝕量77 ，進一步研究保護性耕作的防風蝕效應和機理，探索防治土壤風蝕的措施，需要對農田風蝕進行系統而全面的研究。The european journal of agronomy, the official journal of the european society for agronomy, publishes original research papers reporting experimental and theoretical contributions to crop science in many fields, such as crop physiology, crop production and management, agroclimatology and modelling, plant - soil relationships, crop quality and post - harvest physiology, farming and cropping systems, and agroecosystems and the environment
描述: 《歐洲農學雜志》是歐洲農學會的會刊，刊登有關農作物科學方面的實踐性與理論性的原創性文章，涉及作物生理學、作物生產與管理、農業氣候學與模擬、植物與土壤的關系、作物質量與生理學、耕作與作物系統及農業生態系統與環境等學科。分享友人