摘要
1998年至 1 999年 ,在贵州普定县的黄壤旱地上以玉米为指示作物设置试验 ,探讨氮、磷、钾与绿肥的肥料效应。初步探明了现行施肥习惯下氮、磷、钾化肥的养分回收状况 ,明确提出了黔中黄壤旱地玉米的最佳经济效益与最高产量施氮量 (N)分别是 1 38 4kg/ha与 1 49 5kg/ha ,施用有机肥并集中穴施磷肥可提高磷肥有效利用率 ,施用绿肥鲜草 75 0 0kg/ha可增产玉米 6 70kg/ha。此外 ,还分析了绿肥、氮、磷、钾化肥之间的交互作用。
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.
出处
《西南农业学报》
CSCD
北大核心
2000年第1期65-70,共6页
Southwest China Journal of Agricultural Sciences
基金
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>
关键词
黄壤
化肥
绿肥
肥效
玉米
氮
磷
钾
交互作用
yellow soil
chemical fertilizer
green manure
application method of fertilizer
nutrient absorption
yield response
