What should I do with empty corn stalks?
The main reason for poor corn
1. Adverse weather conditions
The most suitable temperature for flowering and pollination of corn is 22~26℃, and the most suitable relative humidity is 65%~90%.
From the big bell-mouth period to before tasseling, it is the most water-requiring period for corn. If the weather is dry, it will affect the normal flowering of male ears and the extraction of female ear filaments, resulting in early tasseling and delayed silking, weak pollen vigor, filaments easily withered, and poor pollination.
During the corn pollination period, if it encounters rainy weather, the pollen will swell and die or stick into a mass after absorbing water, and lose the ability to pollinate. This will make the female ear filaments unable to pollinate in time, which will result in empty trees or "gypsophila".
2. Poor nutrition and metabolism
Insufficient nutrition in the differentiation stage of maize female ears, weak photosynthesis, and little accumulation of organic matter, make female ears poorly developed, resulting in empty trees, or affect the rate of pollination; overnutrition will cause vigorous vegetative growth, weakened reproductive growth, and affect normal development of female ear , Resulting in corn not firm or poor firm.
Three, cultivation issues
Excessive cultivation density leads to serious shading, poor light, poor ventilation and light transmission, lower photosynthetic efficiency, affects the development of female ear filaments, and leads to poor pollination of corn.
Four, insufficient soil fertility
Insufficient soil fertility is one of the important reasons for the empty stalk of corn. Under the same planting density, the less fertilized ones are worse than the more fertilized ones; the lower the fertility, the greater the density, and the worse the fruiting; the single fertilizer is higher than the formula fertilizer, the empty ear rate is higher; the reasonable combination of nitrogen, phosphorus and potassium It can effectively increase the seed setting rate, and the space-time ear rate of potassium deficiency increases; when the soil is deficient in nitrogen and phosphorus, the seed setting rate decreases; when the soil is deficient, the photosynthesis of the plant is affected, the transportation of nutrients is blocked, and the female ears lose energy. The seed setting rate will also decrease.
Five, pest damage
If corn is harmed by aphids, corn borer, etc., it can lead to premature senescence of functional leaves, disease and insects invade the ears, insufficient or obstructed nutrient supply, and often form empty ears or fail to fill normally after being pollinated. Aphids mainly damage the tassels, causing the florets of the tassels to lose juice and shriveled.
Preventive measures for poor corn bearing
1. Sowing in time:
The extreme high temperature in our province is generally concentrated in late July, which is the pollination period for most corn varieties. Therefore, timely sowing and avoiding the high temperature in late July during the flowering and pollination period of corn can effectively prevent the phenomenon of corn kernels.
2. Reasonable dense planting:
According to the characteristics of corn varieties, reasonable dense planting is conducive to ventilation and light transmission, improving photosynthetic efficiency, increasing ear nutrition, and promoting ear differentiation.
3. Reasonable irrigation:
To prevent the occurrence of "stuck-neck drought" during the large-flare period of corn, water in time in case of drought in the large-flare period to promote ear development and normal corn pollination and fertilization.
4. Scientific fertilization:
The base fertilizer is mainly organic fertilizer, with proper amount of nitrogen, phosphorus and potassium fertilizer. The top dressing is mainly nitrogen fertilizer, mainly at the jointing and booting stage.
5. Strengthen pest control:
During the corn tasseling and silking period, pay attention to the control of corn borer and aphids. Chemical control is mainly based on spraying.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
GMP ATS Injection, Tetanus Antitoxin, Tetanus Toxoid ,Tetanus Antitoxin Injection, Antitetanus, Refined Tetanus Antitoxinsupplier in China
Tetanus Antitoxin,Tetanus Toxoid,Tetanus Antitoxin Injection,Antitetanus&Refined Tetanus Antitoxin
FOSHAN PHARMA CO., LTD. , https://www.forepharm.com