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In hot and rainy weather in summer, there are often hot storms hitting crops, causing the greatest damage to vegetables. After the hot rain, the stems and leaves of the vegetables adhered to the ground and the pores on the leaves were blocked, which seriously affected the respiration, transpiration, and photosynthesis of the vegetables. In addition, the plants were blown, the stems and leaves were broken, the soil was compacted, the air in the soil was significantly reduced, and the roots were forced to undergo anaerobic respiration, resulting in the death of cell poisoning. In addition, after the hot storm hits, the disease resistance of vegetables is greatly weakened, and it is easy to cause the occurrence and spread of diseases. Therefore, the following four tasks should be grasped: (1) Water or water should be poured in time. Immediately after a hot storm, artificial water or cold springs are organized to wash away the sediment adhering to the stems and leaves, reduce the soil temperature, increase the oxygen in the soil, and maintain the normal breathing state of the vegetables. (2) Organize manual sand washing and normalize plants. Only the sediment adhering to the stems and leaves was washed off and immediately straightened to reduce the phenomenon of mutual extrusion and the vegetables could grow normally. (3) Spray foliar fertilizer in time. After the hot rain hits, the activity of vegetable roots is very weak and the water absorption is poor. At this time, foliar fertilizer should be sprayed in a timely manner to enhance the ability to absorb fertilizer and quickly restore vitality. (4) Timely cultivating loose soil and preventing pests and diseases. After excluding waterlogging, timely cultivating loose soil should be carried out. Before the dew is left dry, the ash should be sprayed or sprinkled with Bordeaux to prevent disease and infection.
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