共 9 条
[5]
植物生理生化实验原理和技术[M]. 高等教育出版社 , 李合生主编, 2000
[6]
土壤农化分析[M]. 中国农业出版社 , 鲍士旦主编, 2000
[7]
Nitrogen fertilization and nitrate pollution in groundwater in Japan: Present status and measures for sustainable agriculture[J] . Kikuo Kumazawa.Nutrient Cycling in Agroecosystems . 2002 (2)
[8]
Review of the effect of nitrogen fertilization on the chemical composition, intake, digestion and nutritive value of fresh herbage: consequences on animal nutrition and N balance[J] . J.L Peyraud,L Astigarraga.Animal Feed Science and Technology . 1998 (3)
[9]
The effects of a wide range of nitrogen rates on some chemical constituents of the herbage from perennial ryegrass swards with and without white clover[J] . D. Reid,N. H. Strachan.The Journal of Agricultural Science . 1974 (3)