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为探索在早稻上施用最适宜钾肥用量以达到最佳增产增收的目的,开展试验研究。试验6个处理,3次重复,两个对照不施氯化钾,其他4个处理氯化钾用量不同,通过对比,处理3(施氯化钾50kg/hm2)单产达到7015.5kg/hm2,比不施肥对照CKI增加2865kg/hm2,增加69.0%。在土壤肥力水平较高时,速效钾含量在200mg/kg以上,施氯化钾50kg/hm2达到显著增产水平,且产投比最高。
In order to explore the application of the most suitable potassium fertilizer on early rice in order to achieve the best yield increase, the pilot study was carried out. 6 treatments and 3 replications were tested. No potassium chloride was applied to the two treatments. The other four treatments were different in amount of potassium chloride. Through comparison, the yield of treatment 3 (potassium chloride 50kg / hm2) reached 7015.5kg / hm2, CKI without fertilization increased 2865kg / hm2, an increase of 69.0%. When the level of soil fertility was high, available potassium was over 200mg / kg, potassium chloride 50kg / hm2 reached a significant level of yield increase, and the ratio of production to production was the highest.