Choose "insured" species, not "fresh" species. The so-called "insured" species is planted locally for at least two years and performs well. The so-called "fresh" species is that it has not been planted locally or has been grown for only one year. Breeds, because breeds that perform well in the first year may not perform well in the second year.
To select land with good water and fertilizer conditions according to fertility conditions, we must choose dense varieties, and we must plant in accordance with the density required by the variety, because increasing planting density is one of the main ways to increase corn yield. For the plots with normal or poor fertilizer and water conditions, it is not suitable to choose dense varieties, and the general planting density should not exceed 3,500 plants / mu.
The growth period should be too large or too small to cause yield reduction. Choose the variety that just disappears when the corn is harvested (that is, nails cannot squeeze water out of the middle and lower parts of the grain). Do not rely too much on the growth period on the packaging bag, because the same The breed may have different growth periods in different regions. Seeds containing pesticides in the coating agent are preferentially selected. When purchasing corn varieties, we must pay attention to their resistance to stress. Mainly refers to the variety's disease resistance, fall resistance, drought resistance, cold resistance, and strong resistance varieties. Generally stable production.
Buy seeds from reputable seed companies. Because coated seeds containing pesticides, the pesticides in their coatings will kill underground pests in the early stages of corn growth. It is the most cost-effective and effective way to control underground pests. Method.
Before buying seeds, you must check the credibility of the seed company, and try not to buy seeds produced by seed companies with a bad reputation or after-sales service.
When buying seeds, you must go to a designated sales point to buy regular varieties. Specified companies have designated sales points, because the quality of seeds sold at designated points is generally guaranteed. Don't try to buy seeds from unknown sources cheaply.
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