The invention relates to a slow-release type nitrogen-phosphorus-potassium composite fertilizer and a production method thereof, belonging to a composite fertilizer with slow-release type nutrient.

本发明是一种缓慢释放型氮磷钾复合肥料及其生产方法。属于营养成分缓 慢释放的混合肥料。

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Slow release nitrogen fertilizers are discussed and evaluated in view of agrochemical considerations: (1) the agrochemical features and the efficiency of slow release fertilizer;

基于化肥的农业化学要求讨论和评价缓释氮肥：（1）缓释氮肥的农业化学特点及其肥效；

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Slow release nitrogen fertilizers are discussed and evaluated in view of agrochemical considerations: (1) the agrochemical features and the efficiency of slow release fertilizer;

基于化肥的农业化学要求讨论和评价缓释氮肥：（1）缓释氮肥的农业化学特点及其肥效；

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