育苗是蔬菜生产的关键环节。播种后,菜农最担心的就是出现异常幼苗,这样不但浪费种子,还耽误农时。幼苗异常的原因及解救方法如下:1.“顶盖”与“带帽”苗 产生原因:①播种前底水过少,畦面湿度不够,萌发后种皮和种胚之间的粘液被畦面土吸干而失去润滑作用,幼苗连 Nursery is the key to vegetable production. After sowing, vegetable farmers are most worried about abnormal seedlings, so not only a waste of seeds, but also delay farming time. The causes of seedling abnormalities and rescue methods are as follows: 1. “Top cover” and “hat” seedlings cause: ① before planting bottom water is too small, face moisture is not enough, after germination of seed coat and embryo mucus was 畦Suction dry the surface and lose lubrication, even with seedlings