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加钾减磷在早稻施足磷肥的丘块,晚稻可以少施磷肥或不施磷肥。如果用复合肥作追肥,可选用氮钾二元复合肥,这样相对来说,施肥成本低。对于晚稻而言,每667m2追25%复混肥25～30kg加氯化钾5kg,其肥效接近于20～25kg的45%复合肥,而前者的施肥成本比后者低1/3以上。对于20%氮钾复混肥,可每667m2施30～35kg。
Adding phosphorus and phosphorus in early rice Shi enough phosphate fertilizer block, late rice can be less phosphate or no phosphate. If fertilizer for fertilizer, nitrogen and potassium can be used binary compound fertilizer, so relatively speaking, low-cost fertilizer. For late rice, 25-30 kg of 25% compound fertilizer and 5 kg of potassium chloride are applied to 667m2 per 667m2. The fertilizer efficiency is close to 45% compound fertilizer of 20-25kg, while the former is lower than the latter by 1/3. For 20% nitrogen and nitrogen compound fertilizer, can apply 30 ~ 35kg per 667m2.