大葱密植虽能高产，但过密又易引起倒伏，尤其是夏季风雨交加时更甚，假节折顾后又不易恢复，并导致叶于成烂，对产量、品质都有极大影响。采用来叶方法既能抗风、防倒伏，又利于通风透光、密植高产，还便于秋季墙上。具体做法是：在7月下旬左右，将同一垄中相邻的3—4棵大葱， Although the high-yielding onions can produce high density, but too dense and easy to cause lodging, especially in the summer when the storm even worse, after the holiday break is not easy to recover, and lead to Yu Cheng, has a great impact on yield, quality. Leaf method used to both wind, anti-lodging, but also conducive to air and light, dense planting high yield, but also easy to fall on the wall. The specific approach is: in late July or so, the same ridge adjacent 3-4 green onions,