摘要
五年定位监测的田间试验结果表明，施用有机肥料对土壤铁、锰、铜、锌的消耗具有明显的补充作用，但对有效用的补充仍显不足．因此，土壤硼营养有可能成为作物产量的限制因子．长期单施正要素化肥的土壤有效态铁、锰、铜、锌、硼的含量均明显下降，下降量达3mg／kg以上，其中土壤有效态硼则有潜在缺乏的可能．
The results of a five-year experiment in fixed plots showed that application of organic fertilizer could obviously supplement the consumption of Fe, Mn, Cu and Zn, but could not sufficiently supplement the available B in soil. Therefore the B nutrition in the soil might be a limiting factor of crop yield. In the treatment of only applying N, P and K fertilizers, the contents of soil available Fe、 Mn、 Cu、 Zn and B were tremendously decreased up to 3mg/kg or more, and the available B might be in potential deficiency.
基金
"八五"农业部重点科研项目
关键词
有机肥料
无机肥料
微量元素
土壤
organic fertilizer, mineral fertilizer, micro-element
