There are many reasons for the occurrence of red seedlings in corn, which are mainly caused by the following reasons. One is the lack of phosphorus. Phosphorus in the soil can not meet the growth needs of the maize seedling stage, and the root growth is hindered. The seedling growth is slow. Since the phosphorus content in the seedling is gradually reduced, the leaf turns from dark green to red or purple. The second is the accumulation of water in the fields. Humidity of the soil affects the respiration of the roots, and the growth of the roots is hindered, resulting in malnutrition and redness and purple of the plants. The third is the harm of underground pests. The roots of the seedlings were bitten by underground pests, and their ability to absorb water and attract fertilizers became weaker, resulting in weaker seedlings and the formation of red seedlings. The fourth is caused by other reasons. If the soil is too viscous, sowing too deep or too shallow, and burning seedlings caused by improper fertilization, improper treatment of the seedlings caused by pesticide poisoning can lead to red seedlings.
For the above reasons, the following measures can be taken to prevent and control: Early application of phosphate fertilizer, mainly fast-acting phosphate fertilizer, per acre can be applied to calcium phosphate 10 to 15 kg, can also be combined with pest control spraying 1% of superphosphate calcium leachate; Land, digging drainage ditch, so that the rain stopped drying, no water in the field.
For the above reasons, the following measures can be taken to prevent and control: Early application of phosphate fertilizer, mainly fast-acting phosphate fertilizer, per acre can be applied to calcium phosphate 10 to 15 kg, can also be combined with pest control spraying 1% of superphosphate calcium leachate; Land, digging drainage ditch, so that the rain stopped drying, no water in the field.
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