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提高氮肥利用率——金正大包膜控释尿素在油菜上的用量试验效果

李双来,胡诚,乔艳,周远桂,肖春梅

China Agricultural Means of Production（2007）

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Abstract
<正>施肥是提高作物产量的重要的手段,特别是氮肥对作物产量的影响最大,但在施用中氮肥的损失也最为严重,众所周知我国氮肥的当季利用率仅为30%-35%,提高
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