The typhoon season is plagued by windstorms or strong rains that plague the southern coastal areas in July-September and are easily endangered by typhoons. Loose areas frequently affected by windstorm Note: 1. Select lodging-resistant varieties; appropriately reduce planting density; loosen soil and remove compaction; plant corn in downwind direction; properly deep plant; pay attention to adequate base fertilizer and strong stalk; increase application of organic fertilizer and phosphorus, Potash fertilizer, bogey partial fertilizer, jointing period to avoid excessive topdressing nitrogen fertilizer; in the big bell mouth combined with topdressing soil, increase the number of aerial root layer. 2. Spray corn growth regulators during the earing stage. 3. Normally, wind disturbances often accompany rainstorms. It is necessary to drain water in time and strengthen management, such as earth-cultivation, cultivator, and consolidation, as well as increase available nitrogen fertilizer to promote growth. Overcast and widow sunshine reduced the photosynthetic rate, affected the production of corn, delayed tasseling and silking dates, and was not conducive to tassel loosening, pollination and grain filling. The low temperature and high humidity in the fields caused by rain and oligophobia combined with the weak growth of corn are suitable for the occurrence and spread of various diseases such as leaf spot, stalk rot, rust, and ear rot. In areas where rain and sunshine occur as usual, care should be taken to: 1. Use good varieties and reasonable dense planting; timely cultivating, fertilizing, eradicating weeds, and robust plants; spraying corn growth regulators to prevent fall and decay. 2. Artificially assisted pollination. 3. Comprehensive prevention and treatment of diseases. 4. Harvest timely. After the hailstone seedlings and jointing, the locust directly damages the corn seedlings or stalks, destroys the leaves, and freezes the plants; the surface of the soil is compacted, the floorboards are knotted, and the stems and leaves are infected after the wounds. The locust plague was often accompanied by strong winds, which caused the seedlings of low-lying lands to fall flat or be covered by mud and die. Spikes to fruit pods that are grouted can cause damage to the kernels and cobs and mildew. As soon as possible after the disaster, assess the impact on production. Major measures: 1. Check seedlings in a timely manner. The post-disaster recovery ability during the seedling period is strong, as long as the growth point has not been destroyed, it can restore growth and destroy the species carefully. After jointing, if 20%-60% of the ear sections of the plant are cut off, the smashed corn trees should be removed in time and replanted with mungbeans, cowpea and other crops to make up for the losses; if more than 70% are cut off, other crops can be planted. Or during the period of the plant plague, the leaves are made into filamentous, but generally they will not be necrotic, and they can still maintain a certain photosynthetic capacity, and the damage will be slightly lighter. 2. Timely cultivating loose soil, breaking compaction, increasing ground temperature, increasing soil permeability, and applying topdressing available nitrogen fertilizer (urea 5-10 kg per mu); spraying new leaf potassium dihydrogen phosphate 2-3 times after the new leaf grows. Promote new leaf growth. 3. Pick out the broken leaves that are wound together so that the new leaves can grow smoothly. 4. Be alert to the occurrence of diseases after the disaster. Stereo Microscope Stereo Microscope,Stereo Zoom Microscope,Zoom Binocular Microscope,Stereo Binocular Zoom Microscope NINGBO VANCO INSTRUMENT CO.,LTD , https://www.vancoscope.com