Crop yield stability and sustainability in a rice-wheat cropping system based on 34-year field experiment
文献类型： 外文期刊
作者： Han, Xuemei 1 ; Hu, Cheng 2 ; Chen, Yunfeng 2 ; Qiao, Yan 2 ; Liu, Donghai 2 ; Fan, Jun 2 ; Li, Shuanglai 2 ; Zhang, Zhi 2 ;
作者机构： 1.Nanyang Normal Univ, Sch Life Sci & Technol, Nanyang 473061, Henan, Peoples R China
2.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Key Lab Fertilizer Resource Utilizat Wastes, Minist Agr, Wuhan 430064, Peoples R China
3.Collaborat Innovat Ctr Water Secur Water Source R, Nanyang 473061, Henan, Peoples R China
关键词： Crop yield; Yield trend; Yield stability; Sustainable yield index; Long-term fertilization experiment
期刊名称：EUROPEAN JOURNAL OF AGRONOMY （ 影响因子：5.124； 五年影响因子：5.567 ）
ISSN： 1161-0301
年卷期： 2020 年 113 卷
页码：
收录情况： SCI
摘要： Little is known about the effects of different fertilizers and manure use on the yield stability and sustainability of crop in a rice-wheat cropping system. Therefore, a 34-year field experiment (conducted from 1982 to 2015) was used to evaluate the effect of continuous application of inorganic fertilizers and organic manure, supplied at different combinations, on the stability and sustainability of rice and wheat yields. Eight treatments consisted of unfertilized control (CK), inorganic fertilizers (N, NP, NPK) and organic manure (M) either alone or in combination (MN, MNP, MNPK). There was no significant trend of rice grain yield over time for any of the treatments. Wheat yield had an increasing tendency in all the fertilization treatments, including the unfertilized control. Organic manure in combination with chemical fertilizer supported high rice and wheat yields and sustainable yield index (SYI), with decreased coefficient of variance (CV) of rice and wheat yields. The SYI value clearly indicates that rice yield was more sustainable than wheat yield. In conclusion, the combined use of both organic manure and inorganic fertilizer can improve not only crop grain yield but also yield stability and sustainability.
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