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一、施好关键肥。水稻的穗肥、麦子的腊肥、玉米的拐肥、棉花的花铃肥，都是这些作物的关键用肥期。正确掌握关键施肥期，不仅用肥少，而且增产效果好。二、提倡平均肥。作物在达到一定产量后，每提高一斤产量的投肥量要比在正常情况下多几倍，超过合理用量后还会减产。所...
怎样科学施肥
【摘 要】
：
一、施好关键肥。水稻的穗肥、麦子的腊肥、玉米的拐肥、棉花的花铃肥，都是这些作物的关键用肥期。正确掌握关键施肥期，不仅用肥少，而且增产效果好。二、提倡平均肥。作物在达到
【出 处】
：
山西成人教育
【发表日期】
：
1998年8期
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