文献类型： 外文期刊

作者： Liu Rui ¹ ; Zhou Guo-peng ² ; Chang Dan-na ² ; Gao Song-juan ³ ; Han Mei ¹ ; Zhang Jiu-dong ⁴ ; Sun Xiao-feng ¹ ; Cao Wei-dong ² ;

作者机构： 1.Qinghai Univ, Grad Sch, Qinghai Acad Agr & Forestry Sci, Inst Soil & Fertilizer, Xining 810016, Peoples R China

2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr & Rural Affairs, Key Lab Plant Nutr & Fertilizer, Beijing 100081, Peoples R China

3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Peoples R China

4.Gansu Acad Agr Sci, Inst Soil & Fertilizer & Water Saving, Lanzhou 730070, Peoples R China

关键词： green manure; maize; intercropping; biological nitrogen fixation; nitrogen transfer

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.384； 五年影响因子：4.021 ）

ISSN： 2095-3119

年卷期： 2022 年 21 卷 4 期

页码：

收录情况： SCI

摘要： To ascertain the possibility of cultivating maize using biological nitrogen fixation (BNF) by leguminous green manure crops in maize/leguminous green manure intercropping systems, BNF and nitrogen (N) transfer were studied in Xining and Wuwei, two typical northwestern Chinese cities. The experimental treatments included monocultured maize, monocultured green manures (hairy vetch and common vetch), and their intercropping systems. The proportions of N derived from the atmosphere (%N-dfa) in intercropping systems were not significantly different from that in monocultured green manure systems at either experimental site, except for that in hairy vetch (HV) in Xining. The amount of N derived from the atmosphere (N-dfa) of common vetch (CV) significantly decreased from 1.16 and 1.10 g/pot in monoculture to 0.77 and 0.55 g/pot when intercropped with maize, in Xining and Wuwei, respectively, and the N-dfa of HV when intercropped significantly decreased from 1.02 to 0.48 g/pot in Xining. In the intercropping systems in Xining and Wuwei, the amounts of N transferred (N-transfer) from CV to maize were 21.54 and 26.81 mg/pot, accounting for 32.9 and 5.9% respectively of the N accumulation in maize, and the values of N-transfer from HV to maize were 39.61 and 46.22 mg/pot, accounting for 37.0 and 23.3%, respectively, of the N accumulation in maize. Path analysis showed that soil nutrient and green manure biomass were mainly related to N-dfa, and that delta 15N had a primary relationship with N-transfer. We found that 5.9-37.0% of N accumulation in maize was transferred from green manures, and that the N transfer ability to maize of HV was higher than that of CV. In conclusion, intercropping with leguminous green manures provided a feasible way for maize to effectively utilize biologically fixed N.