长期施用绿肥减施化肥对毛叶苕子产草量和土壤肥力的影响
发布时间：2018-11-16 09:53
【摘要】：在甘肃河西绿洲灌区,通过定位试验研究了长期施用绿肥减施化肥对复种毛叶苕子鲜草产量和土壤肥力的影响。结果表明,施用绿肥与减施化肥并复种毛叶苕子可生产优质绿肥鲜草17 093~19 110 kg/hm2;减施化肥30%的处理较农民习惯施肥增效12 091元/hm2,经济效益提高64.7%,土壤有机质和碱解氮含量分别提高1.8g/kg和10.5 mg/kg,而施氮量较高的处理并不利于土壤有机质的积累。施用绿肥7 500 kg/hm2可以代替氮肥67.5~90 kg/hm2,具有培肥土壤和节能、减排、增效作用。
[Abstract]:In the oasis irrigation area of Hexi Gansu Province the effects of long-term application of green manure and chemical fertilizer on fresh grass yield and soil fertility of multiple cropping hairy vetch were studied. The results showed that applying green manure, reducing chemical fertilizer and replanting hairy vetch could produce 17 0933 (19 110 kg/hm2;) of green manure fresh grass. The treatment of 30% fertilizer reduction increased the economic benefit by 12091 yuan / hm2, and the content of soil organic matter and alkali-hydrolyzed nitrogen increased 1.8g/kg and 10.5 mg/kg, respectively. However, the treatment with higher nitrogen application was not conducive to the accumulation of soil organic matter. The application of green manure for 7 500 kg/hm2 could replace 67.590 kg/hm2, of nitrogen fertilizer with the effects of fertilizing soil, saving energy, reducing emission and increasing efficiency.
【作者单位】： 甘肃省农业科学院土壤肥料与节水农业研究所;农业部甘肃耕地保育与农业环境科学观测实验站;中国农业科学院农业资源与农业区划研究所;
【基金】：甘肃省农业科学院科技创新工程学科团队项目(2015GAAS03);甘肃省农业科学院青年基金项目(2014GAAS16) 公益性行业(农业)科研专项(201103005-04) 国家绿肥产业技术体系(GARS-22-Z-16)
【分类号】：S158;S551.2
，
本文编号：2335191
[Abstract]:In the oasis irrigation area of Hexi Gansu Province the effects of long-term application of green manure and chemical fertilizer on fresh grass yield and soil fertility of multiple cropping hairy vetch were studied. The results showed that applying green manure, reducing chemical fertilizer and replanting hairy vetch could produce 17 0933 (19 110 kg/hm2;) of green manure fresh grass. The treatment of 30% fertilizer reduction increased the economic benefit by 12091 yuan / hm2, and the content of soil organic matter and alkali-hydrolyzed nitrogen increased 1.8g/kg and 10.5 mg/kg, respectively. However, the treatment with higher nitrogen application was not conducive to the accumulation of soil organic matter. The application of green manure for 7 500 kg/hm2 could replace 67.590 kg/hm2, of nitrogen fertilizer with the effects of fertilizing soil, saving energy, reducing emission and increasing efficiency.
【作者单位】： 甘肃省农业科学院土壤肥料与节水农业研究所;农业部甘肃耕地保育与农业环境科学观测实验站;中国农业科学院农业资源与农业区划研究所;
【基金】：甘肃省农业科学院科技创新工程学科团队项目(2015GAAS03);甘肃省农业科学院青年基金项目(2014GAAS16) 公益性行业(农业)科研专项(201103005-04) 国家绿肥产业技术体系(GARS-22-Z-16)
【分类号】：S158;S551.2
，
本文编号：2335191
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