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1.为什么叫灰霉病? 答:因为被害的症状,无论是花,还是柱头、果实,被害后都生有灰色的霉层;叶子被害后,产生大枯斑,表面也生有灰色霉。所以叫灰霉。 2.保护地蔬菜灰霉病为什么那么严重? 答:主要是:保护地轮作困难,连作病菌越积越多;灰霉病的发生与温湿度有密切关系,温度在15～27℃病害可发生,但发病的适温是20℃左右,关键是湿度,要求高湿,相对湿度大于85％时,发病严重。而保护地湿度大,加上病菌的分生孢子主要借气流传播、传播快,所以,保护地灰霉病发生重。
1. Why is Botrytis cinerea? A: Because of the symptoms of the victim, whether it is flowers, or stigma, fruit, gray mold layer is born after the victim; leaf damage, resulting in large spot, the surface is gray moldy. So called gray mold. 2. Protected vegetable gray mold why so serious? A: The main is: the protection of the ground rotation difficult, even as the bacteria accumulate more; gray mold occurrence and temperature and humidity are closely related to the temperature at 15 ~ 27 ℃ disease can occur , But the onset of the appropriate temperature is about 20 ℃, the key is the humidity, high humidity, relative humidity greater than 85%, the incidence is serious. The protection of humidity, with the bacteria mainly conidia spread by air, spread fast, so protected gray mold occurred heavy.