Shading in relay intercropping system is a major factor affecting the low growing of crop growth and development.
间套作系统中荫蔽是影响低位作物生长发育的主要因素。
Optimal allocation of field structure in different yield levels in relay intercropping of maize and wheat could be confirmed by frequency analysis.
利用频数分析法可分别确定米麦间套作不同产量水平田间结构的优化配置。
Increased the application of nitrogen can relax the competition in relay intercropping system, and improve the yield and nutritive values of whole-crop forage.
合理增施氮肥可以缓解复合群体的竞争而使营养价值显著提高。
The main problems are bring forward as well as the approaches to solve them, concerning the relay intercropping of maize and wheat in the studied region commonly existing at present.
指出了研究区域目前米麦间套作普遍存在的主要问题，根据该研究提出了解决问题的途径。
The main problems are bring forward as well as the approaches to solve them, concerning the relay intercropping of maize and wheat in the studied region commonly existing at present.
指出了研究区域目前米麦间套作普遍存在的主要问题，根据该研究提出了解决问题的途径。
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