Corn lodging is mainly caused by heavy winds or heavy rain or pests. After lodging, it will affect the ventilation and light transmission and poor pollination, resulting in empty rods or production. Measures should be taken to reduce production losses.
First, artificially straightening corn
Manually straighten immediately after lodging. The first and second sections of the base of the corn stalk are relatively fragile, and some of the roots are damaged. When straightening, the fracture should be prevented and the root injury should be increased. One person can support one person and raise the soil to the root of the plant. Try to follow the support, delaying not only difficult to support the plant will increase losses. For corn plants that are less severely lodging, they can stand upright by their own strong adjustment ability, and the spatial arrangement of stems and leaves can be basically reasonable.
Second, strengthen water and fertilizer management
The lodging of corn is poor due to photosynthesis, and the physiological functions are disturbed, which directly affects the filling and firmness. For a field that only chases 1 fat, you can chase 1 time. If the first top dressing is not applied with phosphorus and potassium fertilizer, the plant can be sprayed with 1.4% of the high-yield 5000 times solution, which is beneficial to the synthesis of protein and chlorophyll, and can increase the fullness of the corn kernel.
Third, pay attention to the prevention and control of pests and diseases
After the corn is lodging, the disease often occurs. Leaf diseases such as corn size spot disease, rust, etc., water-stained blue-gray spots appear in the early stage of the disease, and can be sprayed with 50% of the carbendazim WP 500 times or 75% of the chlorothalonil WP 300 times. Spray once every 7 to 10 days, even spray 2 to 3 times. Use 15 to 20 kilograms of lime powder per acre and mix 50 kilograms of fine soil to spread the field evenly, which can effectively prevent the occurrence and spread of diseases. The borehole of corn borer in the internodes of the plant is the cause of the collapse of the lodging, and should be timely controlled. The method is to sprinkle into the heart leaf with 0.5 kg of Xin Shi in a corn trumpet period.
Fourth, prevent lodging measures
1 Appropriately deepen the tillage layer, deep tillage can promote the development of corn roots and deepen the soil, which can significantly reduce the degree of lodging in the later period. 2 timely cultivating the soil, timely soil cultivation after the jointing of the corn, can promote the plant to produce a large number of supporting roots, so that the root system is developed, reducing lodging. 3 Reasonable fertilizer and water management, fertilization should be based on base fertilizer, and topdressing should not be too early. Fertilizer should be treated with phosphorus and potassium fertilizers. 4 seedlings seedlings can shorten the upper part of the internode, and the roots are deep into the soil. The amount of irrigation should not be too large after the jointing to prevent the length of the person. 5 Reasonable close planting, rational planting according to variety characteristics or adopting wide and narrow row planting methods to improve plant individual development and reduce lodging.
The above is the solution after lodging and the measures to prevent lodging, hoping to help the farmers.
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