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大葱培土是增加葱白长度,防止倒伏,改善大葱葱白质量的一项重要措施。培土的作用1.根据大葱生长习性,葱白生长必须在黑暗条件下进行,培土可创造黑暗条件,满足大葱葱白生长需要。2.培土固本,防止倒伏。大葱植株较高,遇风容易倒伏,培土可防止倒伏。3.中耕疏松土壤,增加土壤通透性,利于根系伸展。4.消灭杂草。大葱生长期间,杂草伴随同步生长,争水争肥,还引发各种病虫害。通过中耕松土,将杂草压没
Onion Peat soil is to increase the length of light blue, to prevent lodging, improve the quality of green onions is an important measure. The role of earthwork 1. According to the growth habit of green onions, green onion growth must be carried out in dark conditions, earthwork can create dark conditions to meet the growth of onions scallion needs. 2. Cultivation of soil, to prevent lodging. Green onion plants higher, easy to lodging the case of wind, earth can prevent lodging. 3. Sowing loose soil, increase soil permeability, conducive to root extension. 4. Eliminate weeds. During the growth of green onions, weeds grow with synchronization, fight water for fertilizer, but also lead to a variety of pests and diseases. Through the cultivation of loose soil, weeds pressure no