contour tillage meaning in English

等高耕作

On the basis of analyzing factor ( soil particle composition , soil bulk density , water stable aggregate content , antecedent soil moisture , slope gradient , rain intensity , accumulation depth and soil crust , soil and water conservation tillage measures ) affecting soil infiltration rates , several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates , while there have the same rainfall condition , the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %
在相同的降雨条件下，黄土高原沟壑区等高耕作与直线坡相比，可提高入渗67 ，人工掏挖可提高入渗41 ，人工锄耕可提高入渗29 ；黄土丘陵沟壑区等高耕作可提高入渗45 ，人工掏挖可提高入渗22 ，人工锄耕可提高入渗14 。并根据黄土高原超渗产流的概念和水量平衡方程，建立了不同水土保持耕作措施强化入渗速率模型。