2CAMPBELL C A,LAFOND G P, HARAPIAK J T,et al. Relativecost to soil fertility of long-term crop production withoutfertilization [J]. Canadian Journal of Plant Science, 1996,76 (3) : 401-406. 被引量:1
3BELAY A,CLAASSENS A S,WEHNER F C. Effect of directnitrogen and potassium and residual phosphorus fertilizers on soil chemical properties, microbial components and maize yield under long-term crop rotation[J]. Biology and Fertility of Soils,2002,35(6) :420-427. 被引量:1
4SCHWAB A P,OWENSBY C E,KULYINGYONG S. Changes in soil chemical properties due to 40 years of fertilization[J]. Soil Science,1990,149(1) :35-43. 被引量:1
5SHEHU Y. The effect of green manuring and chemical fertilizer application on maize yield, quality and soil composition[J]. Tropical Grasslands, 1997, 32 : 139- 142. 被引量:1