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First, prevent premature aging: As corn plants are tall, they will inevitably consume large amounts of nutrients and water during growth. Excessive water in fertility will cause soil oxygen deficiency. At this time, the root activity is weakened and water absorption is difficult, but the transpiration of leaves is not reduced, especially On sunny days, the leaves consume more water, which can easily lead to physiological metabolic disorders, leaf curling, and slow growth. If there is a lack of fertilizer at this time, the plants will become slender or even withered.
Control methods: If there is a rainy area, drainage should be done to prevent stains. If there is a trend of premature aging or yellow leaves, the application of fine fertilizer or spraying of phosphorus fertilizer should be applied at the early stage of flowering to prolong the green leaves and increase the quality of the fruit. Potash or potassium sulfate fertilizer can also prevent premature aging.
The second is air defense stalks: insufficient supply of minerals, malnutrition, can not meet the nutrient requirements during ear differentiation, or the density is too large, and the photosynthetic intensity is weak, while nitrogen fertilizer, low phosphorus, and potassium deficiency all cause empty stalks.
Control methods: When planting, attention should be paid to the density, which requires Daehang corn not to be sealed to ensure ventilation and ventilation of the plant. It is necessary to supply nutrients and moisture in a timely manner in order to facilitate ear differentiation and development. At the same time, attention should be paid to nitrogen, phosphorus and potassium during fertilization. The three elements are properly combined. The soil with poor soil fertility should be applied with more organic fertilizer. In areas with high soil fertility, more phosphorus fertilizer should be applied during the seedling stage in order to grow long roots and strong stalks. During head differentiation, fertilization should be carried out. If too dense or weak, please pull it out in time.
The third is the lack of grain and baldness: the lack of phosphorus in the soil, the plant in the booting flowering period if the metabolism of sugar and protein synthesis, cell division is blocked, the top of the ear will continue to shrink, filament elongation will slow down, affect the natural pollination will lead to Bald heads or even empty ears. Soils such as potassium deficiency, transport of soluble carbohydrates to the grain are hindered, and grain-starch starch is also necessarily less. Or early infestation of insects, wind damage caused by the lack of nutrient delivery, or flowering during the rain, pollen fertilization obstruction, etc. will cause baldness, pods or empty grains.
Control methods: To prevent premature plant failure, the key is to prevent pests and diseases, apply more phosphate fertilizer, potash fertilizer, such as drought in case of spinning, watering and irrigation in time, the best flowering artificial pollination.
The fourth is anti-lodging: the density of forgoing seedlings is too large. When the stems are elongated, the management of fertilizer and water is improper, and it is easy to cause lodging and affect the yield.
Control methods: When planting, we need to deepen the cultivation layer, increase the base fertilizer, properly cultivate the soil when cultivating, and make the corn stably. Fertilizer should pay attention to the combination of nitrogen, phosphorus, and potassium, and pay attention to the plant density to ensure that the growing leaves have enough sunlight to make the plants robust and thicken the seedlings to increase their lodging resistance.
Four Measures for High Maize Yield
If corn is poorly managed during the growth process, premature aging, empty stalks, lack of grain, lodging, etc. are prone to occur, which will seriously affect the quality and yield of corn. How to prevent this phenomenon? According to the experience of some old farmers, we should do a good job in field management in four technical measures, focusing on the "four defenses":