Some friends will say, how can corn not be good? Needless to say, this situation is really true, and many people have encountered it. Last year, many friends reacted that corn only grew badly and ended up directly. The earing period of corn heading is a critical period of management, and management can greatly increase production.
Today, Xiao Bian introduces to everyone, the reasons for the lack of corn and preventive measures, I hope that friends through this article, scientific management, corn can make a big stick every tree.
Not much nonsense, first look at the reasons for causing corn to not stick?
1, planted too dense
Poor ventilation and light transmission in the field, poor growth and development of the corn, obstruction of the ear, resulting in lack of grain.
2, the rate of pollination decreased
Sporadic or linear planting reduces the pollination rate of female flowers. Corn is a cross-crop crop, male flowers are on, female flowers are under, and pollination distance is far.
3, water imbalance
From the big bell to the flowering stage, it is the critical period of corn water demand. In this period, lack of water and drought will cause the tassel to pull out slowly or the tassels that have been withdrawn will die dry, resulting in greatly reduced pollen and male and female. Drought and no rain before and after tasseling, resulting in tassel flowering and earing stage of the earing or postponement, the ear and tassel flowering period is not met.
4, when the flowers are scattered, it is cloudy and rainy.
The ear can not bloom normally, and some pollen expands and ruptures or sticks into a group and loses vitality, which affects the normal conduct of pollination and fertilization. During the flowering period, the continuous high temperature above 35 °C causes the pollen and filament to dry up and cannot complete the insemination.
5, pest damage
The corn flower grain stage is endangered by corn borer, aphid, armyworm and leaf spot, black powder disease and other pests, leading to premature senescence of functional leaves, which will also increase corn empty mites and severely form empty ears.
6, the cause of the seed.
I bought fake seeds.
After the reasons have been read, the following are preventive and preventive measures. You can carry out selective prevention and control according to the actual situation.
7. Pesticide physiology
When farmers use pesticides to increase their doses and use high-toxic pesticides when they are squirting, this phenomenon will occur, causing corn infertility.
8, other
The temperature difference between the accumulated temperature of the seed is too large, and planting across the area will also affect the corn knot.
The earing period of corn heading is a critical period of management. Management can greatly increase production. Generally, the following management measures can be taken, which will have a multiplier effect.
1. Irrigation drainage
The flowering period of jade flower heading is the period of most water demand during the whole growth period. At this time, the leaf area is the largest, the transpiration and photosynthesis are strong, the water demand is large, and it is sensitive to water. If water shortage occurs during this period, it will reduce production and watering. Conditional plots should be irrigated and watered in time.
If there is more rain in the maturity stage of corn, it is necessary to do a good job of clearing the ditch to protect the plant from yellowing, premature aging or disease growth, hinder the grouting and firmness, the grain is not full, the baldness is increased, and the yield is reduced.
2, soil fertilization
Cultivating soil can eliminate soil compaction, promote ventilation and warming, promote microbial activity, accelerate nutrient decomposition, promote root respiration and absorption, inhibit weeds and pests, enhance ventilation and light transmission, improve and regulate field microclimate, prevent premature aging Conducive to early maturity.
3, remove the tassel
Corn emasculation is a simple and easy measure.
4, remove the no effect spike
Most of the hybrid maize varieties are single ear varieties. Except for the upper ears of the plants, the second and third ear developments are late, the silk is late, and it can not be fertilized and sturdy. It is a no-effect ear and needs to consume a large amount of nutrients and can be removed.
In this way, nutrient concentration can be saved to supply the main ear, and the main ear can be increased, which not only increases the grain weight and the quality of the corn, but also promotes early maturity.
The field management during the heading period is good, which will create good environmental conditions for the pollination and solidification of corn, root and leaf protection, improve photosynthetic efficiency, prevent premature aging, anti-air rods, prevent granules, increase grain weight, number of grains and effective panicles. To achieve the goal of high yield.
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