1999, 05, 67-68+78
河南省大量营养元素平衡状况
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摘要：
河南省耕地氮、磷、钾化肥投入构成及其演变表明：氮肥所占比例在减少，而磷、钾肥所占比例逐步提高，但仍未达到合理的配比。磷、钾肥仍然不足。根据多年田间试验结果及施肥和农作物产量与携营养物质的统计分析，计算了河南省大量营养元素的平衡状况
Abstract：The constitution and change of N,P,K in Henan field indicate that the proportion of N has been decreasing ,and the proportion of P,K have been increaing gradually.Howerer,the reasonable ratio has not been obtained .Phosphate and potash can't meet the agricultural need yet. According to field experiments for many years and the statistic analysis of bringin by fertilizer and bringout by crop absorption,the equilibrium status of main nutrients are calculated.
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[1]焦有,李贵宝,鹿智江.河南省大量营养元素平衡状况[J].磷肥与复肥,1999(05):67-68+78.
发布时间：
1999-09-20
出版时间：
1999-09-20