Causes of high corn yield
1. Maize varieties are mixed: The corn seed market is confusing and the varieties are mixed. It is difficult for farmers to choose varieties with high yields and stable production.
2. High planting density: The planting spacing in our county is generally 60 cm, but the plant spacing is relatively small, and the number of acres per mu is as many as 5,500 and some are over 6,000. Corn mulching time is early. Not light, greatly reducing the photosynthesis of corn, the number of acres is the key to determine the number of seed rows of corn ear.
3, serious pests and diseases: In recent years, corn rough dwarf disease, brown spot disease, stalk rot, bacterial wilt, rust and deficiency of disease, and corn borer and aphid widespread. The height of corn stalks is not high enough for farmers to prevent and control pests and diseases. Result in a decrease in corn production.
4. Fertilization irrational: Insufficient use of nitrogen, phosphorus, and potassium causes a relative decrease in the effective content of soil nutrients and reproductive growth in soil compaction and soil trace elements. Straw is not firm and easy to lodging, and male and female heading is not synchronized. Pollination, resulting in the loosing of corn ears.
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