冬季生产大棚蔬菜时,若冲施肥料量大过勤,极易造成土壤板结,瓜菜烂根、沤根、植株萎蔫等现象,严重影响大棚蔬菜的经济效益。根据多年的生产实践,冬季大棚蔬菜施肥应做到以下“四个结合”:一.有机肥与无机肥相结合不少菜农无论冲施,还是追施,均 Winter greenhouse production of vegetables, the red if fertilizer fertilizer over ground, can easily lead to soil compaction, rotten roots vegetables, roots, plant wilting and other phenomena, seriously affecting the economic benefits of greenhouse vegetables. According to many years of production practice, winter greenhouse vegetable fertilization should do the following “four combinations ”: I. Combination of organic fertilizer and inorganic fertilizer Many vegetable farmers regardless of red facilities, or topdressing, are