育苗移栽的西瓜，移植到大田地，经常会出现茎叶发黄卷缩，生长十分缓慢，植株增长量十分小的现象。如果将其带根从地下取出后会发现，产生的新报不但量少而且十分细弱，这种现象在生产中常称之为僵苗。产生僵苗的机理比较复杂，原因是岁方面的。1．土壤方面土壤过实、过湿、通 Seedlings transplanted watermelon, transplanted to the field, often appear yellow curling stems and leaves, growth is very slow, the growth of plants is very small phenomenon. If you take it out of the ground with roots will find that the resulting new newspaper is not only a small amount of very thin, this phenomenon is often called in the production of stiff seedlings. The mechanism of stiff seedlings produced more complicated, because the old side. 1. Soil soil is too solid, too wet, pass