共 11 条
[1]
Francis.Precision agriculture—what’s in our future. Schepers,J.S. and D.D. Communications in Soil Science and Plant Analysis . 1998
[2]
A GlobalFramework for Fertilizer BMPs. Bruulsema T W,Witt C,Fernando Garcia,et al. Better Crops with Plant Food . 2008
[5]
Nitrate pollution of groundwater in northern China. Zhang W L,Tian Z X,Zhang N,et al. Agriculture Ecosystems and Environment . 1996
[7]
中国农业年鉴[M]. 中国农业出版社 , 中国农业年鉴编辑委员会 编, 1981
[9]
中国土壤氮素[M]. 江苏科学技术出版社 , 朱兆良,文启孝主编, 1992