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夺取番薯高产,除了适当施用氮、磷肥外,增施钾肥是一个关键,用叶面喷钾则是一种简便易行的方法。叶面喷钾的具体办法是: 一、喷10％草木灰浸出波。即用新鲜草木灰5公斤加水50公斤,浸泡10小时,过滤后用其清液,每亩喷量为50～60公斤。二、喷0.2％磷酸二氢钾溶液(即2两磷酸二氢钾兑水50公斤),每亩喷
To seize the sweet potato high yield, in addition to the proper use of nitrogen and phosphate fertilizer, the increase of potassium is a key, with foliar potassium is a simple and easy way. Specific methods of potassium foliar spray: First, spraying 10% leaching ash plantation. That is, fresh grass ash 5 kg plus water 50 kg, soak for 10 hours, after filtration with its supernatant, spray per acre of 50 to 60 kg. Second, spray 0.2% potassium dihydrogen phosphate solution (ie 2 potassium dihydrogen phosphate watered 50 kg), spray per mu