常見例句雙語例句Compared with the residue cover, the effect of surface tillage on soil erosion by wind was not so obvious.在覆蓋和耕作兩因素中，覆蓋對減小風(fēng)蝕的作用最大，地表耕作的作用次之；Treatments included conventional tillage, subsoiling, straw mulch, tied ridges, shallow pits surface and no tillage.試驗(yàn)處理包括常規(guī)耕作、深松、秸稈覆蓋、壟作、淺坑及免耕。Among the three factors, residue cover and wheel traffic are more influential for infiltration, while the effect of surface tillage is not clear.秸稈覆蓋和機(jī)具壓實(shí)是影響降雨入滲的主要因素，表土耕作的影響相對較小。 返回 surface tillage