Currently in North China, harvesting of wheat is in progress. After that, it will be planted mainly with corn-based crops. How can we buy high-quality seeds?
   First, choose a seed that is glossy and bright, with a small grain size and a uniform grain shape.
   Second, the seed can be treated with a coating agent, which can save the pest control work after sowing, and is beneficial to the seedlings and the seedlings.
   Third, no matter the timing of updating hybrids is one of the key measures to increase corn production. Hybrids that have been cultivated for a long time in production usually have poor hybridization advantages and low yields due to low breeding levels at the time and degradation of parental purity. Therefore, it is best to choose a new hybrid that has been approved in the near future.
   4. The farmland with the planned wheat stubble can choose hybrids with relatively long growth period. In the farmland after the wheat, the hybrids with shorter growth period can be used to facilitate full maturity and timely cropping for the next season.
   5. According to the current feed and industrial processing market demand, it is possible to concentrate on the cultivation of dominant corn hybrids, such as high lysine and high oil corn, which has much higher economic benefits than the cultivation of common corn hybrids.
   Sixth, in accordance with the law of high yield and cultivation, if you want to make corn high yield, in addition to increasing the investment in water and fertilizer, it is necessary to increase the seeding rate of corn seeds and increase the density. Usually, the hybrids are about four kilograms per mu to ensure the density and meet the requirements of seedlings and seedlings.
   7. When purchasing seeds, it is best to ask the sales unit for the variety description, in order to facilitate and accurately grasp the characteristics of the hybrid, and manage according to the characteristics of the variety, so as to ensure high yield.
   8. When purchasing seeds, the seed retail papers must be obtained and properly preserved so that when the seeds are in trouble, they can report the losses to the sales units and obtain certain compensation.
   Nine, there are many channels for selling corn seeds, but the seeds of state-owned units such as regular-view seed companies and agricultural research units are more reliable.
   10. After purchase, it should be reasonably kept, and pay attention to drying it frequently to prevent the seeds from losing moisture and preventing mildew and insects, and improving the germination potential and germination rate of the seeds.
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