蔬菜苗期由于管理不善,经常会出现倒苗、徒长、僵化、烧根、沤根、萎蔫等问题。现将上述问题发生的现象、产生的原因及防止的方法分述如下:1、倒苗秧苗生长瘦弱、茎叶柔嫩、体内干物质少、表面角质层不发达、秧苗软化或根茎处收缩,以及苗期病害等引起苗折倒,这些现象都称为倒 Vegetable seedling due to poor management, often appear inverted sprout, leggy, rigid, burning roots, root, wilting and other issues. Now the phenomenon of the above problems, causes and prevention methods are described as follows: 1, inverted thin seedlings grow thin, soft stems and leaves, less dry matter in the body, the surface of the stratum corneum is not developed, the seedlings softened or rhizome contraction, and Seedling disease caused by seedlings down, these phenomena are called down