摘要
与二十世纪八十年代初比 ,新疆农田土壤全氮含量有下降趋势 ,碱解氮含量普遍有所提高 ,但至少有5 0 %的农田土壤碱解氮含量属于低水平 ,因此氮素营养仍是制约新疆农作物产量的主要因素之一 。
Comparing with 1980's,the present total nitrogen content of soil is inclining to descend in xinjiang farmland.However,N content,which is discomposed by alkali,is obviouscy increasing.But nowadays N content(discomposed by alkali)is low in 50 percent farmland in xinjiang. Lack of N content of soil is still a problem,as far as improving crop yield is concerned.
出处
《塔里木农垦大学学报》
2002年第2期5-8,共4页
Journal of Tarim University of Agricultural Reclamation
关键词
新疆
氮素含量
现状
农田土壤
farmland soil
nitrogen vegetable
present situation
