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Performance of an Optimized Nutrient Management System for Double-Cropped Wheat-Maize Rotations in North-Central China

文献类型： 外文期刊

作者： He, Ping 1 ; Li, Shutian 1 ; Jin, Jiyun 1 ; Wang, Hongting 3 ; Li, Chunjie 4 ; Wang, Yilun 5 ; Cui, Rongzong 6 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Crop Nutr & Fertilizat, Minist Agr, Beijing 100081, Peoples R China

2.Beijing Off Int Plant Nutr Inst, Beijing 100081, Peoples R China

3.Shanxi Acad Agr Sci, Inst Soil & Fertilizer, Taiyuan 030031, Peoples R China

4.Hebei Acad Agr Sci, Inst Soil & Fertilizer, Shijiazhuang 050051, Peoples R China

5.Henan Agr Univ, Coll Resource & Environm, Zhengzhou 450002, Peoples R China

6.Shandong Acad Agr Sci, Inst Soil & Fertilizer, Jinan 250100, Peoples R China

期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）

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收录情况： SCI

摘要： Overapplication of N and P and insufficient supply of K are considered primary reasons for restriction of yield improvement in the North China Plain. Optimized nutrient management practices based on soil testing and yield targets have been developed. Other large scale field experiments have indicated that additional improvement for yield and nutrient use benefits is needed. The objective of this study was to evaluate the effects of the optimized nutrient management system on yield, nutrient uptake, nutrient utilization, and profit in the North China provinces of Shanxi, Hebei, Shandong, and Henan. Treatments consisted of a check without fertilizer use (CK); a balanced, optimum nutrient application (OPT); the farmers' practice (FP); and a series of nutrient omission treatments (minus N, P, and K, respectively). The results indicated that the OPT optimized grain yield, nutrient use efficiency, and profitability. Maize (Zea mays L.) yield increased by 12.2% at Shanxi and 18.5% at Hebei, respectively. Inputs of N and P across the wheat (Triticum aestivum L.) and maize system at the four sites was reduced by 13% (266 kg N ha1) and 45% (430 kg P2O5 ha1), while K input was increased by 43% (265 kg K2O ha1). The OPT improved both measurements of nitrogen use efficiency (NUE); agronomic nitrogen efficiency (AE(N)) and nitrogen recovery efficiency (RE(N)) in the majority of cases. Although the OPT tested in this study increased yields and nutrient uptake, there remains considerable potential to improve AE(N) and RE(N) further for this intensive winter wheatsummer maize rotation system.

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