The lodging of corn is mainly caused by strong winds and heavy rain or insect feeding. After lodging, affecting ventilation, light transmission and pollination, measures should be taken promptly to minimize loss. 1.Management measures after corn lodging will be manually straightened after artificial corn straightening. The first and second internodes of the base of the corn stem are relatively fragile, and in addition, some of the root systems have been damaged, and they must be prevented from breaking off and increasing the number of root injuries during straightening. One person can straighten another person's roots to cultivate soil. We must try to follow suit. Procrastination is not only difficult to raise but also increase losses. For maize with less lodging, due to the strong ability of the plant to regulate itself, it can generally stand upright and the arrangement of stems and leaves can be basically reasonable. Strengthen the water and fertilizer management Lodging corn Due to poor photosynthesis, physiological function is disturbed, affecting the grouting. For a field that only weighs once, you can chase it once more. If the top dressing is not applied with P and K fertilizers, the plants can be sprayed with a 5000% solution of 1.4% HSBC to facilitate the synthesis of protein and chlorophyll and increase the corn grain plumpness. Pay attention to the prevention and control of pests and diseases of corn after lodging, diseases often occur. Leaf diseases such as corn leaf spot, rust, etc., water-stained blue-green spots appear in the leaves at the onset of the disease, and can be sprayed with 50% diureticin 500 times solution or 75% chlorothalonil 300 times solution. Every 7 to 10 days, spray 2 to 3 times. Every hectare spreads the field with lime powder 225 ~ 300kg mixed fine soil 750kg uniformly, can effectively control the disease occurrence and the spread. Timely control of corn borer, when the corn is a bell mouth with 1.3% of carbofuran granules per hectare 7500 ~ 11250g lost leaves or 35% of phoxim granules 3750g against sand 75 ~ 105kg lost the heart leaves. 2. Preventing countermeasures Properly deepening the plough layer Deep ploughing can promote the development of the root system of maize, and deeper into the soil can significantly reduce the degree of late lodging. Timely cultivating and soil cultivation After the jointing period of maize, large amount of supporting roots can be produced and the root system can be developed to reduce lodging. Reasonable fertilizer and water management and fertilization should be based on basal fertilizer, and fertilizer should not be too much and too early. Fertilizers should pay attention to the combination of phosphorus and potassium fertilizers. Seedling seedlings can shorten the internodes of the shoots and deepen the roots. After the jointing, the amount of irrigation should not be too large to prevent leggy. Reasonable dense planting based on species characteristics, close planting or use of narrow and narrow rows of planting methods to improve individual development can reduce lodging. Spray spinners growth regulators in corn tassels, can be used Maize prime 50ml dilution 75kg / m2 sprayed the upper leaves, can inhibit stems and Hin Festival internode elongation, promote Stem Xuan thickening, root system developed, enhanced lodging resistance.
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