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首页> 外文期刊>Earth Interactions >Narrowing the Agronomic Yield Gaps of Maize by Improved Soil, Cultivar, and Agricultural Management Practices in Different Climate Zones of Northeast China
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Narrowing the Agronomic Yield Gaps of Maize by Improved Soil, Cultivar, and Agricultural Management Practices in Different Climate Zones of Northeast China

机译：通过改良土壤，栽培品种和农业管理实践来缩小东北不同气候区的玉米的农业产量差距

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AbstractNortheast China (NEC) is one of the major agricultural production areas in China, producing about 30% of China’s total maize output. In the past five decades, maize yields in NEC increased rapidly. However, farmer yields still have potential to be increased. Therefore, it is important to quantify the impacts of agronomic factors, including soil physical properties, cultivar selections, and management practices on yield gaps of maize under the changing climate in NEC in order to provide reliable recommendations to narrow down the yield gaps. In this study, the Agricultural Production Systems Simulator (APSIM)-Maize model was used to separate the contributions of soil physical properties, cultivar selections, and management practices to maize yield gaps. The results indicate that approximately 5%, 12%, and 18% of potential yield loss of maize is attributable to soil physical properties, cultivar selection, and management practices. Simulation analyses showed that potential ascensions of yield of mai...
机译：摘要东北是中国主要的农业产区之一，占中国玉米总产量的30％左右。在过去的五年中，NEC的玉米单产迅速增长。但是，农民的单产仍然有可能增加。因此，重要的是量化NEC变化气候下土壤物理性质，栽培品种选择和管理措施等农业因素对玉米产量差距的影响，以便提供可靠的建议来缩小产量差距。在这项研究中，使用了农业生产系统模拟器（APSIM）-玉米模型来分离土壤物理特性，品种选择和管理实践对玉米产量缺口的贡献。结果表明，玉米潜在产量损失的约5％，12％和18％归因于土壤的物理特性，品种选择和管理实践。仿真分析表明，潜在的提升产量的潜力最大。

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