Early application of phosphate fertilizer can prevent corn red seedlings
There are many reasons for the occurrence of red seedlings in corn, which are mainly caused by the following four reasons: First, phosphorus deficiency. When the phosphorus in the soil does not meet the growth requirements of the corn seedling stage, the phosphorus content in the seedlings will gradually decrease, and the leaves will turn red or purple from dark green. The second is the accumulation of water in the field. If the soil moisture is high, it will affect the respiration of the root system, and the growth of the root system will be hindered, which will lead to malnutrition and redness and purple. The third is underground pest damage. The roots of the seedlings are bitten by underground pests, and the ability to absorb water and absorb fertilizer becomes weak, which causes the seedlings to weaken and form red seedlings. Fourth, it is caused by other reasons. If the seeding is too deep or too shallow, the fertilization caused by improper fertilization, improper treatment of the pesticide causes seedling poisoning, etc., will lead to corn red seedlings.
For the above reasons, the following measures can be taken for prevention and treatment: early application of phosphate fertilizer should be based on quick-acting phosphate fertilizer, 10~15 kg of calcium phosphate per acre, and 1% superphosphate leaching solution combined with insecticide spraying; Land, excavate the drainage ditch, so that the rain stops and the water is dry, and no water is accumulated in the field.
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