河南省减肥增效 区域划分及重点措施
Countryside Agriculture Peasantry（2017）
Abstract
实施化肥使用量零增长行动是保障国家粮食安全、促进农民增收的需要,要突出重点作物、重点地区、重点环节,开展化肥减肥增效工作.
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