Corn yields with organic and inorganic amendments under changing climate

文献类型： 外文期刊

第一作者： Li, Yan

作者： Li, Yan;Zhang, Yingpeng;Sun, Ming;Zhong, Ziwen;Luo, Jiafa;Liu, Ping;Li, Yan;Zhang, Yingpeng;Sun, Ming;Zhong, Ziwen;Zhao, Haijun;Liu, Zhaohui;Gao, Xinhao;Luo, Jiafa

作者机构：

关键词： Long-term fertilization; Climatic factor; Corn productivity; Soil organic matter; Sustainable yield index; Haplic Luvisol

期刊名称：NUTRIENT CYCLING IN AGROECOSYSTEMS （ 影响因子：3.27； 五年影响因子：3.767 ）

ISSN： 1385-1314

年卷期： 2018 年 111 卷 2-3 期

页码：

收录情况： SCI

摘要： We evaluated the productivity and sustainability responses of corn (Zea mays L.) cultivated in brown soil (FAO: Haplic Luvisol) to long-term fertilization (1983-2011) and climate change in Shandong Province, eastern China. The experimental system comprised a crop rotation of winter wheat and summer corn, with a control (CK) and four fertilization treatments consisting of nitrogen (N), phosphorus (P), and potassium (K), and organic manure (M) in various combinations (N, NP, NPK, NPKM). The average corn grain yields in the four fertilization treatments were 1.3-2.3 times greater than that of the control (CK) (P < 0.001). The sustainable yield index (SYI) ranged from 0.5 to 0.8. The four treatments and CK were ranked, from highest SYI to lowest, as follows: NPKM > NPK > NP > CK > N. Corn grain yields in N, NP, and CK significantly increased over time (P < 0.05), but remained relatively high and stable over time in the NPK and NPKM treatments. Soil organic matter content increased over time, and was highest in the NPKM treatment. Soil pH did not change significantly over time (P > 0.05). Bivariate correlation analyses showed that the corn grain yields in CK and the four treatments were significantly positively correlated with mean temperature difference (max-min) during the growth season (P < 0.05). The correlation coefficients were higher for CK, N, and NP than for NPK and NPKM treatments. Corn productivity was more sensitive to climatic changes under long-term imbalanced nutrient application or no fertilizer application.

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