grass carbon 中文意思是什麼
grass carbon
解釋
草炭-
( 2 ) the losses of organic carbon, nitrogen, phosphorus and potassium were different in different farming systems. this losses of these elements according to respective farming systems was the following order : tradition > grass stripe > contour ditch > fallow > contour dam. compared with traditional fanning practices, others farming systems reduced losses of organic carbon, nitrogen, phosphorus and potassium and losses in contour dam, contour and fallow were much less than grass stripe and contour ditch
（ 2 ）不同農作措施徑流小區有機碳、氮、磷、鉀流失差異明顯，有機碳、氮、磷、鉀流失總量的順序為：順坡農作水平草帶水平溝休閑等高土埂，同順坡農作相比，其他農作措施均有減少有機碳、氮、磷、鉀流失的作用，以等高土埂、等高農作、休閑處理減少土壤有機碳、氮、磷、鉀流失的效果較好。 -
( 3 ) the farming systems which had a less degree of soil erosion and sedimentation, organic carbon was lost mainly through runoff but in farming systems in which soil erosion was serious such as in grass stripe, contour ditch, traditional farming system, the loss was through bed load. nitrogen loss through runoff was 81. 9 % - 93. 4 % of the total. this loss through runoff comprised 78 % - 87. 6 % dissolved nhvn and no " 3 - n although the former was slightly higher than latter as it made up 55. 14 % of the lost nitrogen
（ 3 ）侵蝕程度較輕，泥沙流失量較小，特別是推移質流失量較小的農作措施處理的徑流小區，如休閑處理、等高土埂和等高處理的小區中有機碳流失以徑流流失為主，相反，如水平草帶處理、水平溝處理和順坡農作處理的徑流小區中，有機碳流浙江大學博土學位論文失以推移質流失為主。
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