The greenhouse grower consults: Why does the tomato cucumber always start to rot from the umbilical part of the fruit, the smashed wound will rot, and the control effect of the medicine is not very good. This is caused by rickets. How to prevent it? Solution: This is caused by the fungus Botrytis cinerea Botrytis cinerea, which is a common disease in greenhouse vegetables in winter. The bacteria likes low temperature, high humidity and weak light. During the cold period in winter, in the event of continuous yin and snow disease, the disease is very serious. This pathogen is a weak parasite that can only infect the plant's orifice and wound. The fruit of tomato cucumber was invaded from the stigma hole of the pistil, so the umbilical part of the flowering part was rotted. In addition, the leaf pores are also the infected pores, so the leaves are infected and form "V" shaped lesions from the leaf tip. In addition to the orifices, wounds caused by insect pests, wounds that stalked, and wounds caused by long-term accumulation of water can all infect. In cold conditions in winter, the wounds caused by pruning do not easily heal, and cause wound flow, which often causes the infection of pathogens. Therefore, the pruning, binding of vines, tendrils of cucumber, and the wounds of tomato smashing often cause disease rot and grow. Grey mold. Some tomatoes have fluffy, long-term accumulation of water, it will cause pathogens to infect from the pedicle. Therefore, in order to control botrytis, in the winter management of greenhouses, these agricultural operations must be carried out after dehumidification in the sunny morning and cannot be carried out with dew. The reason for the poor control effect of gray mold drug use is that the drug technology is unreasonable. The second is that Botrytis produces resistance to pesticides. In order to improve the control effect, spray should be sprayed on sunny days after morning dehumidification, and aerosol should be used as much as possible. The pharmacy flower should be taken on a sunny morning. The third is to choose some new pesticides, such as: tebuconazole, azoxystrobin, cyprodinil, oxastrobin, etc., and pay attention to alternate use. Eggs Vibrator,Butt Plug Anal Vibrator,Anal Vibrator With Controller,Anal Vibrator Adult Shenzhen Dongchen Hey E-commerce Co.,Ltd. , https://www.xxsexytoy.com