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马铃薯需钾量较高,同粮食作物相比,高出3～4倍。过去认为本地区缺氮少磷,钾有余,对马铃薯施钾肥有所忽视。自1977年通过施钾肥试验,才发现有明显增产效果。经过几年的试验证明:1.钾肥增产效果显著。马铃薯每亩施15斤左右氯化钾,增产比例在15%以上,每斤氯化钾一般可增产鲜薯9.4～23斤。2.氮钾肥配合施用,能进一步
Potassium need higher potassium, compared with food crops, 3 to 4 times higher. In the past that the lack of nitrogen and phosphorus in the region, more than potassium, potassium fertilizer on potatoes have neglected. Since the application of potassium fertilizer test in 1977, it was found that a significant increase in yield. After several years of testing proved: 1. Potassium yield significantly. Potato 15 kg per acre Shi KCl, increasing the proportion of more than 15%, potassium chloride per kilogram can generally increase the yield of 9.4 to 23 pounds of fresh potato. 2. With the application of nitrogen and potassium fertilizer can be further