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1.增施钾肥 红薯是喜钾作物,增施钾肥,以增施草本灰、磷酸二氢钾为宜。方法是:在夏红薯蔓封沟前每亩顺埂撒施25～30公斤的草木灰,结合中耕除草使肥土融合;也可以亩喷施磷酸二氢钾0.2公斤,加水30～40公斤。隔7天喷1次,共喷2次。 2.摘心 夏红薯摘心可以控制旺长,促进块根膨大。摘心时间:夏薯蔓全部封沟时将蔓的顶心摘去一叶一心。 3.化控 7、8月份,雨水较多,在
1. Increased potash sweet potato is like potassium crops, increased potash, to increase the application of herbal ash, potassium dihydrogen phosphate is appropriate. Method is: summer sweet potato manure ditch ditch per acre Shun Shi sprinkle 25 to 30 kg of ash, combined with cultivation of weeds make soil integration; also sprayed potassium dihydrogen phosphate 0.2 kg, add water 30 to 40 kg. 1 spray every 7 days, a total of 2 spray. 2. Topping sweet summer sweet potato topping can control the flourishing growth of tuberous roots. Topping time: Sweet potatoes will be closed when the whole Feng Gou pick the heart of a leaf one heart. 3. Chemical control 7, August, more rain at