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抓关键技术 促玉米高产

孙建军,王岳生,王海芳

XIANDAI NONGCUN KEJI（2009）

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Abstract
<正>近年来,随着国家惠农政策的实施,农民种粮积极性高涨,玉米产量有了大幅度的提高。总体上看,一般产量达到了9000kg/hm2,高产田达到了11250kg/hm2。但是,由于管理措施、气候条件等种种原因,年度间产量不稳定,起伏
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