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Fertilization response to N,P,K and green manure for maize in yellow soil upland

JIANG Tai ming,HUANG Quan neng (Soil and Fertilizer Institute,Guizhou Academy of Agricultural Sciences,Guiyang 550006,China)  
With maize as indicator the trials were conducted to probe the fertilization response of nitrogen,phosphate,potassium and green manure for yellow soil upland in Puding county,Guizhou province from 1988 to 1999.The nutrient absorption has been ascertained for N,P and K under current fertilization pattern.The most economical and highest yielding fertilization rate on maize production are 138 4 kg/ha and 149 5 kg/ha of N for yellow soil upland,respectively.The application of organic manure and concentrated use of phosphate fertilizer is an effective way for high utilization rate of phosphate.Fresh green manure of 7500 kg/ha could increase maize output of 670 kg/ha.Moreover,the interaction among green manure,N,P and K was analyzed.
【Fund】: 世界银行西南扶贫项目!《旱地肥料有效利用技术的研究与推广》
【CateGory Index】: S513.06
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