晋西北山黧豆根茬还田提供土壤氮素的研究  

Study on Lathyrus quinquenervius(Miq.)Litv Stubble in Field Providing Nitrogen for Soil in Northwestern Shanxi

作　　者：李屹峰[1] 薛志强[1] 冯悦晨[2] 曹卫东[3] 张延芳[4] 郑普山[2] 

机构地区：[1]山西省农业科学院右玉农业试验站,山西右玉037200 [2]山西省农业科学院农业环境与资源研究所,山西太原030031 [3]中国农业科学院农业资源与农业区划研究所,北京100081 [4]山西省农业科学院,山西太原030031

出　　处：《山西农业科学》2016年第8期1158-1160,共3页Journal of Shanxi Agricultural Sciences

基　　金：国家公益性行业(农业)科研专项(201103005)

摘　　要：以晋燕18号燕麦为供试作物,在晋西北丘陵区连续2 a开展了山黧豆（Lathyrus quinquenervius（Miq.）Litv）茬口减氮大田试验研究。结果表明,山黧豆根茬还田可提供给土壤氮素,培肥土壤,提高后作燕麦籽粒产量,每公顷山黧豆根茬可提供给土壤氮13.8 kg;在山黧豆茬口施用80%N比无根茬施用100%N的氮肥偏生产力提高2.72-7.66 kg/kg。在有机肥不能输入农田时,旱地种植绿肥是培肥土壤的重要措施。Taking the Jinyan 18 oats as the test crop, Lathyrus quinquenervius（Miq.）Litv stubble in field decreasing nitrogen in the field experiment were carried out in the northwestern Shanxi for 2 years. The results showed that Lathyrus quinquenervius（Miq.）Litv stubble in field could increase the nitrogen content in soil and oat grain yield, and the number of per hectare Lathyrus quinquenervius.stubble providing nitrogen for soil was 13.8 kg/hm^2. Compared with no stubble treatments applied 100% N, nitrogen partial productivity of Lathyrus quinquenervius stubble in field treatments applied 80% N increased 2.72-7.66 kg/kg. In a word, when the organic fertilizer was not be applied, planting green manure in dryland was an important measure to improve soil fertility.

关 键 词：山黧豆 绿肥 根茬还田 氮肥偏生产力 

分 类 号：S142.1[农业科学—肥料学]