摘要
利用黑土区农田耕层土壤取样调查的方法,对黑土农田碱解氮现状进行评估。结果表明:由南向北碱解氮逐渐增高,同时具有南北和东西两个方向的异质性,依据含量大小分为高、中、低3个区域,为黑土农田合理施肥提供了依据。图3,表1,参7。
The black soil samples were collected in the entire black soil region, and alkali dispelled nitrogen content was evaluated in this study. The result showed： the alkali dispelled nitrogen content increased from south to north, and it was anisotropic in two directions S- N and W- E.The entire black soil area was divided three sub areas, high, moderate and low, according to the alkali dispelled nitrogen content, and it will be helpful to fertilizer application in this region.
出处
《农业系统科学与综合研究》
CSCD
2005年第4期305-306,309,共3页
System Sciemces and Comprehensive Studies In Agriculture
基金
中国科学院知识创新工程重大项目(KZCX1-SW-19-3-01)
关键词
黑土
碱解氮
评估
the black soil
alkali dispelled nitrogen
evaluation
