论文部分内容阅读
持续的连阴天,加上低温寡照天气的影响,温室黄瓜灰霉病开始泛滥。由于天阴不能打药,只用烟雾剂,防效不太理想。黄瓜灰霉病几乎每年都要发生,特别是温室蔬菜,进入冬季,如果再遇到低温寡照天气,灰霉病很容易蔓延。经过这几年观察,温室黄瓜灰霉病发生也有规律可循,黄瓜结瓜期是该病侵染和烂瓜的高峰期,发病适温18℃~23℃,最高30℃~32℃,最低4℃,当温室内湿度达到85%以上时,叶片
Continued even cloudy, coupled with the impact of low-temperature weather, greenhouse cucumber gray mold began to spread. As Yin can not fight the day, only aerosol, anti-control effect is not ideal. Cucumber gray mold occurs almost every year, especially greenhouse vegetables, into the winter, if you encounter low temperature weather, gray mold is very easy to spread. After several years of observation, the occurrence of greenhouse cucumber gray mold also has a regular pattern, the cucumber fruiting period is the peak of the disease infection and rotten melon, the incidence of suitable temperature 18 ℃ ~ 23 ℃, the highest 30 ℃ ~ 32 ℃, the lowest 4 ℃, when the humidity in the greenhouse reaches more than 85%, leaves