倒伏是影响小麦高产稳产的一个重要因素,高产区防止小麦倒伏是一个突出的问题。小麦倒伏有两种:一种是根倒伏即连根倒伏。这种倒伏是在土壤结构较差,耕层过浅,整地、播种质量不好,根系发育不良,入土浅或长期未灌水后期灌水过大又遇风雨等情况下发生的。另一种是茎倒伏,即茎基部弯曲或折断,这种倒伏是高产区常发生的一种倒伏。造成倒伏的主要原因是由于在高 Lodging is an important factor affecting the high and stable yield of wheat. It is a prominent problem to prevent wheat from falling in high yielding areas. There are two kinds of wheat lodging: one is the lodging of the roots lodging. This lodging is occurred under the conditions of poor soil structure, too shallow plow, land preparation, poor sowing quality, poor root development, shallow soil filling or excessive irrigation in the late long-term non-irrigation period and occasional storm. The other is the stem lodging, that is, the base of the stem is bent or broken. This lodging is a kind of lodging that often occurs in high yielding areas. The main reason for the lodging is due to high