The East-West glass slide is a glass slide or quartz slide that is used to place a glass slide or quartz slide when it is observed under a microscope. During production, a cell or a sample containing a certain tissue is randomly placed on the slide glass, and a cover slip is placed on it for observation a similar material that produces a phase difference.
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First, apply the base fertilizer. The summer maize should be applied with good base fertilizer before the sowing. The main method is to use the former glutinous wheat to directly return the straw to the field. The appropriate amount of nitrogen fertilizer should be applied to adjust the carbon to nitrogen ratio and accelerate the straw maturity.
Second, staged topdressing. Staged topdressing is an important technical measure for high yield of corn. Topdressing is mainly based on quick-acting nitrogen fertilizer. According to different growth stages of corn, phosphorus and potassium fertilizers are used in different stages. Usually divided into three times top dressing: seedling fertilizer, jointing fertilizer, attacking fertilizer. Fertilization at the seedling stage should be applied early, accounting for about 10% of the total topdressing amount, and jointing fertilizer accounted for about 60% of the total topdressing amount. This fertilization is a key topdressing, the attacking fertilizer accounts for about 30%, and the summer corn is in jointing and booting. During the period, there are more demand for nitrogen, phosphorus and potassium, and phosphorus and potassium fertilizer should be applied according to the specific conditions.
Third, strengthen the foliar fertilizer application. Foliar fertilization as a cost-effective fertilization measure has been 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 corn seedling stage and jointing stage can prevent the occurrence of corn white seedling mosaic disease. In addition, when spraying foliar fertilizer, hormone substances such as Tianfengsu or Shuofeng 481 can be appropriately added, which has obvious effects of increasing yield.
Fourth, it is necessary to be cautious when purchasing application-specific fertilizers. Since many farmers lack the identification ability of the special compound fertilizer, it is necessary to be cautious when purchasing fertilizer and fertilizer.
Huaxian Agricultural Technology Promotion Center Lu Shuguang 
Summer corn science fertilization technology
Corn is a high-yield crop that requires a large amount of fertilizer. According to the fertilizer requirement of corn, a scientific and reasonable fertilization method can be adopted to achieve high yield and stable yield of corn.
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