共 62 条
[1]
中国土壤肥力[M]. 中国农业出版社 , 沈善敏主编, 1998
[4]
Effects of 60-year N, P, K and Ca fertilization on EUF-nutrient fractions in the soil and on yields of rye and potato crops[J] . S. Mercik,K. Németh.  Plant and Soil . 1985 (1)
[8]
土壤钾素研究的现状与展望. 谢建昌. 土壤学进展 . 1981
[9]
Thenitrogencycleinthebroadbalkandexperiment:15N labelledfertilizerresiduesinthesoilandinthesoilmicrobialbiomass. ShenSM,HartPBS,PowlsonDS,etal. SoilBiol.Biochem . 1989