耕層土 的英文怎麼說

中文拼音 [gēngcéngtǔ]
耕層土 英文
tosoil
  • 耕 : 動詞1. （用犁翻地） plough; plow; cultivate; till 2. [書面語] （謀生） make a living
  • 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
  1. Soil is the base of agriculture production, the key measure to prevent water and soil loss is to conserve soil, but most soil nutrient is lost with the sediment loss, and serious water and soil loss make the soil thickness degrease, the soil nutrient be deficient and lean, the land quality degrade and the yield of plant decrease, all this results is going to threaten the people ' s transplanting and the agriculture sustainable development, and restrict the economy development of three gorges regions

    同時，土壤是農業生產的根本，治理水土流失的關鍵是要保住土壤，而土壤養分絕大部分是隨著泥沙流失的，嚴重的水土流失造成土層淺簿、養分貧瘠，土地質量退化，產量下降，對三峽庫區移民工作和農業可持續發展造成嚴重威脅，制約三峽庫區經濟發展。因此進行三峽庫區坡耕地土壤侵蝕機理研究，探索減輕坡耕地土壤流失的方法措施，具有全局性的重大意義。
  2. The results show that the interface between the cultivated layer and the plough sole in the soil profile was undulated under the current cropping system mainly using small - sized four - wheeled tractors and flat under the cropping system of deep plowing annually in the fall

    結果發現，現行的以小四輪拖拉機為主要動力的耕作制度下，土壤剖面中耕層與犁底層的界面為「波浪型」 ，而年年進行秋翻的玉米田，其耕層與梨底層的界面為「平面型」 。
  3. 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。
  4. The recommended water ( by balance method ) and nitrogen ( by kns system ) practices were compared with conventional practices on spinach growth in field experiment

    摘要針對傳統水肥方式中存在的投入過量問題，採用控制耕層土壤濕度以及應用kns氮素推薦系統對菠菜的產量及水氮利用進行了研究。
  5. At present, with the development of land, there appear many phenomenon that soil structure was deteriorating, soil was getting hardened and impervious, black soil layer was getting thinner

    黑土是我國的主要耕作土壤，目前隨著土地的開發，一些地區土壤結構破壞，板結嚴重，黑土層變薄，地力減退。
  6. Standard specification for topsoil used for landscaping purposes

    園林設計用耕作層土標準規范
  7. And we found the model of moisture changing is " reduction - - - stabilization - - - reduction " while the former researchers " result is linearly reduction or reduction after a steady period

    我們提出的土壤接納降水后的土壤水分的變化模式是「遞減? ?穩定? ?再遞減」 ，特別是紫色土坡耕地的耕作層土壤水分明顯符合此模式變化。
  8. 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。
  9. Effects of tillage practices on temporal variations of soil surface properties

    夏玉米耕作方式對耕層土壤特性時間變異性的影響
  10. Two - dimensional numerical simulation of soil water infiltration under bed - irrigating sowing

    坐水播種時耕層土壤水分入滲的二維數值模擬
  11. Studies on the effect of iron oxide and om on organo - mineral complexes in soils

    不同開墾年限黑土耕層有機無機復合體變化及有機碳組分分佈特徵
  12. Besides, the two systems were significantly different in soil nutrient content and soil physical and chemical properties

    而且兩者耕層土壤的養分含量和理化性質等指標也有明顯差異。
  13. A field representative to the high production - region in yutian county, hebei province was selected and a 70 kg top layer soil sample was taken from the field in june, 1991

    在河北省玉田縣高產地區選一個有代表性的地塊， 1991年6月麥收后採集70公斤的耕層土樣。
  14. 3 ) the moisture changing processes at various location of a slope purple soil are obvious different : at up - location, soil moisture reduce more rapidly, therefore, drought will easily response to it at which the principle of often and little irrigation should be adopted

    3 ）同一塊紫色土坡耕地內，土壤水分的時空變化有較明顯的差異。地塊上部，耕層土壤含水量遞減較快，因此，表現出較易受旱的情況，應採取少量多次的灌溉原則。
  15. Corn yields of phaeozem in " flat type " " boundary soil ( depth < 15cm ) reached 6. 65t / hm2. in addition to, content of available, water, organic carbon. cation exchange capacity and available n was the most in " flat type " boundary soil ( depth = 30cm )

    在吉林玉米帶黑土土壤物理環境方面，兩種不同形狀界面構造土壤在三相組成、有效土壤量、持水性能等方面差異顯著，相關分析表明，吉林玉米帶黑土玉米產量與耕層厚度、有效水含量呈明顯相關關系。
  16. The results show that the physical and chemical conditions of the corn belt phaeozem have significant different in different profile morphological characteristics. in another way, soil composition of three phases, content of available water, nutrient content and composition of humus have significant different in different profile morphological characteristics. among three groups of profile morphological characteristics, corn yields of phaeozem in " flat type " boundary soil ( depth = 30cm ) were the most, reached 8. 22t / hm2on average. corn yields of phaeozem in " wave type " boundary soil ( depth = 15cm ) reached 7. 55t / hm2 on average

    這兩種界面構造對玉米產量影響差異顯著， 「平面型」界面土壤抗逆性較強，產量最高，平均產量達8 . 23t / hm ~ 2 ，而「波浪型」界面土壤抗逆性較差，它可以分為兩種情況：當耕層厚度15cm時，產量處于中等水平，平均產量為7 . 55t / hm ~ 2 ；當耕層厚度15cm時，產量最低，平均產量為6 . 65t / hm ~ 2 ，此種土壤處于丘陵漫崗區，產量受水土流失影響較大。
  17. By the crop residue input, priming effects of soil irjcrobe will take place, and decomposition and bio - fixation give rise to soil organic matter arid m in the up layer of soil. on the other hand, tillage accelerate ; ; the organic matter mineralization and leads to the quantity of organic matter decreasing in. or 10cm. layer which is about 1 / 2 of soil organic matter under no - tillage

    覆蓋免耕使土壤上層的有機質和氮素穩定增加，這主要來自被激發的微生物繁殖時對碳和氮的生物固定，而傳統耕作則由於耕翻加速了有機物的礦化， 0 - 10cm土層微生物碳含量均一，其數值幾乎為免耕系統的一半。
  18. The main result is as follows : 1. after erosion, the content of organic matter, total nitrogen and the available nitrogen in the sediment is more than that of soil sample. namely the enrichment phenomenon of organic matter, total nitrogen and the available nitrogen in slope cultivated land erosion soil is obvious

    黃?土受侵蝕后，泥沙樣中有機質、全氮和堿解氮的含量都高於雨前採集的坡地表層土樣，即黃?土坡耕地水土流失中有機質、全氮和堿解氮流失的「富集」現象明顯，而全磷和速效磷卻無明顯的「富集」現象。
  19. Agriculture is universal on all atmospheric worlds ; tilling the soil is the one pursuit that is common to the advancing races of all such planets

    農業在所有大氣層世界里是普遍的，耕作耕種土壤所有此類行星高級種族一項持之以恆的事業。
  20. But on the later condition the trend of accumulation turned to be stable in the w3 treatment ( vseawater / v pure water = 1 ) - in root zone soil, variation of sar value accorded with total salt accumulations and sometimes decreased at the treatment where the v seawater / v pure water > 1. contents of cl - and na + which were the main ions and leached obviously in 0 - 60cm soil were greatly influenced by rainfall, but the rainfall did not affected the contents of ca2 +, mg2 + and k + whose ability of leaching is worse than that of cl - and na + in the root zone soil obviously. the vertical distribution of salt ions in the 0 - 60cm soil were mainly affected by the ratio of v seawater / v pure water in the irrigation water on the condition of not enough rainfall, but on the cont

    海水灌溉下，耕層土壤中鹽分含量受降雨量影響很大，足夠的降雨條件下，鹽分不會積累，降雨量較低時，鹽分積累明顯，但在50海水處理下趨于平衡狀態；耕層土壤sar值的變化情況和鹽分含量變化情況相一致，在灌溉水中海水濃度大於50時有所下降；土壤中主要鹽離子為cl ~ -和na ~ + ， 0 - 60cm土層內， na ~ + 、 cl ~ -明顯的向土壤底層遷移，其在土壤中的含量受降雨影響顯著，而ca ~ （ 2 + ） 、 mg ~ （ 2 + ）和k ~ +在土壤中遷移能力較低，其含量受降雨影響較小； 0 - 60cm層次土壤鹽分的縱向分佈在降雨量較低的條件下主要受灌溉水中海水濃度的影響，而在降雨充分的條件下，地面覆蓋程度成為重要的影響鹽分和水分脅迫下菊芋的生理響應及其海水灌溉研究因子之一。
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