Summer maize yield 夏玉米产量
Summer maize field 夏玉米田
winter wheat-summer maize 冬小麦夏玉米
summer-maize 夏玉米
the summer maize 夏玉米
summer maize yields 夏玉米产量
summer maize field weed 夏玉米田杂草
High-yield summer maize 高产夏玉米
Summer maize water consumption varied exponentially with maize leaf area index at the filling stage.
拔节抽雄期夏玉米耗水量与玉米叶面积系数呈正相关；
The results showed that EM microbial compost increased winter wheat and summer maize yields significantly.
结果表明：em微生物堆肥能明显增加冬小麦和夏玉米的产量。
Soil denitrification was studied in winter wheat-summer maize rotation cropping system with an aquic cambisol.
在北京潮土上研究了冬小麦-夏玉米轮作体系下土壤氮素反硝化损失。
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