Heavy winds and heavy rains cause lodging of corn, affecting ventilation and light transmission, pollinating badly, and should take prompt and effective measures to minimize losses.
1. Artificial support: Immediately after corn lodging, artificial straightening should be carried out. When straightening, it is necessary to prevent breakage and increase the root injury. One person can straighten another person to cultivate the roots. It is best to support it afterwards. Once it is delayed, it will be difficult to raise it and increase it. Plants that are not severely lodging have a strong self-regulatory ability and generally stand upright without the need for secondary straightening.
2. Adjustment of fertilizer and water: Lodging corn has poor photosynthesis and physiological function is disturbed, affecting grouting and solidity. For a field that only recovers 1 fat, you can recover 1 fat. Potassium dihydrogen phosphate and other special foliar fertilizers can also be used to spray plants, which will increase the seed setting rate and reduce baldness.
3, pest control: disease often occurs after the lodging of corn. Leaf diseases such as corn leaf spot, rust, etc., the appearance of water-stained gray spots on the leaves at the beginning of the disease can be sprayed with 50% carbendazim WP 500 times solution or 75% chlorothalonil wettable powder 300 times solution. Spray once every 7-10 days, spray 2-3 times. Spread the field evenly with lime powder 15-20 kg mixed soil 50 kg per acre, which can effectively prevent the occurrence and spread of diseases. To prevent corn borer, use Sutron (Bacillus thuringiensis) per acre with 15 grams of fine sand per acre or 200 grams of 3% phoxim granules for 15 kg of fine sand when the corn is flared.
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