In early spring or overwintering, the cultivation of vegetables in protected areas often encounters severe weather, such as rain, snow, cloudy days, and low temperature, which not only seriously affect the growth of plants, but also have a great impact on the flower bud differentiation of fruits and vegetables, and cause fruit and fruit drop. Malformed fruit has a great influence on the overall yield of vegetables. Poor management can lead to the production of a crop of vegetables. If you want to grow good vegetables, you must strengthen the management of low temperature and even cloudy vegetables.
Before the onset of disaster weather, it is necessary to spray pesticides and protect vegetables in a timely manner to prevent major diseases, such as the morning and the night blight, Botrytis cinerea, and downy mildew diseases. However, ensure that the leaves remain dry after administration. For a long period of time, the spraying of foliar sprays was irrational. The main choices were aerosols and dusting agents to prevent disease.
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