常見例句雙語例句Soil total nitrogen contents in 77.3 % production units were high, 22.7 % units low.全氮含量処於中高水平的生産單位佔77.3%，処於低水平的生産單位佔22.7%；Contrast to soil available nitrogen, soil total nitrogen was not influenced by the environmental factors.而優(yōu)勢物種和功能群組成對土壤全氮的影響作用相對較弱。It was shown that the vegetation types could exert significant effects on soil total nitrogen according to the study results.以黃土丘陵溝壑區(qū)的子午嶺次生林區(qū)主要植被類型爲(wèi)對象，研究了植被類型對土壤全氮的影響作用。 返回 soil total nitrogen