Corn yielding fertilization skills

1. Prevent premature aging. Because the corn plant is tall, it will consume a lot of nutrients and water during the growth period, and too much water in the growth will cause the soil to be deprived of oxygen. At this time, the root activity is weakened and the water absorption is difficult, but the leaf transpiration is not reduced, especially on sunny days. More, easy to cause physiological metabolic disorders, leaf curling, slow growth, if the lack of fertilizer at this time, the plant will be short, even withered death.

Control method: If there is rainy area, it should be done to prevent and stain the sputum. If there is a trend of premature aging or yellowing of the leaves, apply the fertilizer or spray the phosphate fertilizer at the beginning of flowering to prolong the green leaves, increase the ear, and apply the ash in the seedling stage. Or potassium sulfate fertilizer, can also prevent premature aging.

2. Air defense stalks. Insufficient supply of minerals, malnutrition, can not meet the nutrient requirements of the ear differentiation stage, or the density is too large, photosynthesis is small, and nitrogen fertilizer, phosphorus, and potassium deficiency will cause empty stalks.

Control method: attention should be paid to the density when planting. It is required that large rows of corn are not sealed to ensure that the plants are ventilated and ventilated. It is necessary to supply nutrients and water in a timely manner to facilitate the differentiation and development of the ear, and at the same time pay attention to nitrogen, phosphorus and potassium during fertilization. The three elements are properly combined. Soils with poor soil fertility should be applied with more organic fertilizers, soils with high soil fertility, and more fertilizers should be applied at the seedling stage to make long roots and strong stalks, and the tops of the ears should be topdressed. If it is too dense or weak, it should be removed in time.

3. Anti-grain and baldness. There is a lack of phosphate fertilizer in the soil. During the flowering stage of the booting stage, such as sugar metabolism and protein synthesis, cell division is blocked, the top of the ear will contract, and the elongation of the filament will also slow down, affecting natural pollination, which will lead to baldness and even empty ears. If the soil is deficient in potassium, the transport of soluble carbohydrates to the grain is hindered, and the grain starch is also inevitably small. Or early damage to the insects and winds, so that the seedlings are not enough to transport nutrients, or the flowering period is affected by rain, pollen fertilization is blocked, etc., which will cause baldness, glutinous grains or empty grains.

Control methods: To prevent premature aging of plants, the key is to prevent pests and diseases, and apply more phosphate and potassium fertilizers. If drought occurs during spinning, it should be timely watered and irrigated. It is best to carry out artificial pollination during flowering.

4. Anti fall. The density of the seedlings is too large, and the fertilizer and water are not properly managed when the stems are elongated, which is likely to cause lodging and affect the yield.

Control method: When planting, it is necessary to deepen the tillage layer, increase the application of base fertilizer, and properly cultivate the soil during the cultivating, so that the corn can be stabilized. At the time of fertilization, attention should be paid to the combination of nitrogen, phosphorus and potassium, and the plant density should be paid attention to ensure that the leaves in the growing season have sufficient sunlight to make the plants thick and strong, so that the planting seedlings are thick and strong, so as to increase the lodging resistance.

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