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研究有机无机肥料对土壤肥力及作物产量的影响.5年的定位监测结果表明,施无机N、P、K结合冬蔬菜残茎叶还田,不但能增加作物产量和提高经济效益.而且还能培肥土壤.而无机肥料加猪粪或冬绿肥还田的增产效果及土壤培肥效果与全无机肥相近.稻秆还田是增加土壤有机质的一项比较明显的有效措前,这一结论得到了再次验证.施用有机肥料可以增加土壤有效态微量元素的含量.
Effects of organic and inorganic fertilizers on soil fertility and crop yield. Five years of monitoring results showed that the application of N, P and K in combination with winter vegetables and leaves to field, not only can increase crop yield and improve economic efficiency. But also fertilize the soil. The inorganic fertilizer plus pig manure or winter green manure yield and soil fertility effects of all inorganic fertilizers similar. Rice straw is to increase soil organic matter is a more obvious and effective measures, this conclusion has been verified again. Application of organic fertilizers can increase the soil available trace elements.