我省受季风气候影响,冬春降水量小,春季干燥多风。因此,选择适宜的耕地时间,充分保蓄冬春降水是旱地棉花保全苗的关键。由于人们担心秋冬耕地时施入化肥可能会造成损失,近年来秋耕棉田越来越少,为此,我们在纯旱地进行了试验,结果表明,秋冬耕地施肥比春季耕地施肥的棉田土壤速效养分含量有所提高,且具有蓄墒、保苗、增产等多重效果。 Affected by the monsoon climate in our province, winter and spring precipitation is small, dry and windy spring. Therefore, choosing the suitable time of arable land and fully saving winter and spring precipitation is the key to protect cotton seedlings in dry land. Because people are worried about the fall and winter when the application of chemical fertilizers may cause losses, in recent years, fewer and fewer autumn cotton fields, for which we conducted a trial in pure drylands, the results show that the fertility of autumn and winter arable land than cotton soil fertility Content has increased, and has moisture storage, seedlings, yield and other multiple effects.