论文部分内容阅读
西瓜的整个培育过程中,常出现多种病害,严重影响西瓜的正常生长和产量的提高。其中最为常见的有猝倒病、蔓枯病、疫病、炭疽病四大病害。猝倒病此病是西瓜苗期的主要病害。苗期根颈部呈水浸状病斑,而后病部变褐,幼苗近地面处明显缢缩而倒伏。土壤温度低、温度大时有利菌的生长与繁殖,所以
Watermelon throughout the cultivation process, often appear a variety of diseases, seriously affect the normal growth of watermelon and yield. The most common are damping-off disease, blight, blight, anthrax disease four major diseases. Damp down disease The disease is the main disease of watermelon seedling. Seedling roots and neck was flooded spots, and then brown the Ministry of disease, the seedling near the ground constriction and lodging. Soil temperature is low, the temperature conducive to bacterial growth and reproduction, so