论文部分内容阅读
地瓜是一种需钾较多的作物,每1,000斤鲜薯中含钾5.5斤(氮磷含量为3.5斤和1.75斤)。钾肥能促进碳水化合物的形成和运输,促进形成层的活动,增施钾肥有利于块根增大,增加淀粉含量,提高耐贮性。地瓜进入块根膨大期需钾较多,叶面喷施钾肥有明显增产效果,茎叶徒长的地瓜喷钾后,增产尤为明显。
Sweet potato is a crop that requires more potassium and contains 5.5 kg of potassium per 1,000 kg of fresh potato (3.5 kg and 1.75 kg of nitrogen and phosphorus). Potassium fertilizer can promote the formation and transportation of carbohydrates, promote the formation of layer activities, increased potassium fertilizer is conducive to the increase of roots, increase starch content, improve storage stability. Sweet potatoes into the bulky tubercle need more potassium, foliar application of potash fertilizer significantly increased yield, stems and leaves of sweet potatoes growth of potassium, the yield is particularly evident.