摘要
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．
The effects of organic and mineral fertillizers on soil fertility and crop yield have been presented.Results of a five-year experiment in fixed plots show that application of mineral NPK fertilizer combined with winter vegetable residues can enhance grain yield and economic benefit as well as soil fertility. that there is no significant difference in increase in grain output and fertilizing of soil between the application of mineral fertilizer combined with aminal manure or with green manure and of pure mmeral one. It is proved again in the experiment that the return of rice straw to soil can achieve higher content of soil organic matter. Furthermore that the application of organic fertilizer can increase the content of available micronutrients in the soil is also indicated.
基金
"85"农业部重点科研项目
关键词
有机肥料
无机肥料
作物产量
土壤肥力
organic and mineral fertilizer
crop yield
chemical property
physical property
