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Summer corn topdressing is the key
Corn is a high-yield crop, which requires a large amount of fertilizer. Scientific fertilization is the key to obtaining high yield and stable yield of corn. According to the law of fertilizer demand of corn, determine the reasonable fertilization method, and determine the appropriate proportion of fertilizer, in order to achieve high yield and stable yield of corn, and obtain the maximum economic benefits. Applying the base fertilizer or seed fertilizer Summer corn should be applied before the sowing, mainly organic fertilizer (less application in production), can also use the former glutinous wheat to directly return the straw to the field (should be applied with appropriate amount of nitrogen fertilizer, adjust the carbon-nitrogen ratio , accelerate the straw maturity). The seed fertilizer is mainly available nitrogen, phosphorus and potassium fertilizers , such as diammonium phosphate (about 5 kg - 10 kg per mu), potassium sulfate composite fertilizer (45% content of 10 kg - 15 kg per mu), etc. Very good production effect. The topdressing is very important. The topdressing plays a pivotal role in the growth of corn. The topdressing is mainly based on quick-acting nitrogen fertilizer. According to the different growth stages of corn, phosphorus and potassium fertilizers are used in different stages. In practice, it is usually divided into three times: fattening, jointing fertilizer, and attacking fertilizer. Fertilization at the seedling stage should account for about 10% of the total topdressing amount, and joint fertilizer accounted for about 60% of the total topdressing amount. This fertilization is a key topdressing. The attacking fertilizer accounts for about 30% of the summer maize at the jointing and booting stage. Phosphorus and potassium should be applied according to the specific conditions. Pay attention to the application of foliar fertilizer as a cost-effective fertilization measure, which is widely recognized by many people, such as spraying 0.2%-0.3% potassium dihydrogen phosphate 2 times -3 times during the jointing stage of corn. Corn production increased by more than 10%. Spraying 0.1%-0.3% zinc sulfate aqueous solution in the corn seedling stage and jointing stage can prevent the occurrence of corn white seedling mosaic disease. It is necessary to be careful to apply special fertilizers. Nowadays, the agricultural fertilizer market has a variety of special fertilizers with various names. There are many kinds of fake and inferior products. Today is the special fertilizer for corn. Be careful when using fertilizer, and choose fertilizer according to the growth characteristics of corn and the upper nutrient.
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