在黄瓜育苗过程中,经常出现徒长等异常苗,这些苗定植后,往往生长不良,病虫害发生严重,给生产造成很大损失。现将黄瓜苗期常见的异常苗发生及防治介绍如下: 1.徒长苗 又称高脚苗,引起徒长苗的原因是盖土过厚及苗床温度过高所致。黄瓜育苗时盖土约1厘米即可,过厚易出现高脚苗。一般播种齐苗后,即需降温,白天25— In the process of cucumber seedling growth, abnormal growth often appear abnormal seedlings, these seedlings often poor growth after planting, pests and diseases serious, resulting in great loss of production. Cucumber seedling now common occurrence and prevention of abnormal seedlings are described below: 1 leggy seedlings, also known as tall seedlings, causing leggy seedlings is due to overburden and seedbed temperature is too high. Cucumber nursery cover soil about 1 cm can be too thick prone to tall seedlings. After sowing the general planting, that is, to be cooled, during the day 25-