How to plant cotton seeds? The method of planting cotton seeds is very simple. Simply prepare the plot and sow it directly.
However, some preparations need to be done before planting the cotton seeds in the soil, below we will talk about the method of processing cotton seeds before sowing for reference.
1. Preparation before sowing cotton seeds
Once the seeds have been delinted, they must be selected and dried in the sun.
Selection mainly removes diseased seeds, shriveled seeds, broken seeds and small seeds.
Drying seeds can accelerate post-ripening of seeds. Drying of seeds in sunny weather may take 2-3 days.
Do not expose it to the sun on the cement floor to avoid damaging the physiological activity of the seeds.
2. Selection of pesticides for seed treatments of cotton
① Use dimethonium to prevent seedling diseases and use carbendazim with caution.
Weifu generally uses mulch cultivation with little rainfall or seeder sowing, and dimethon and carbendazim can be used in case of on-demand sowing and heavy rain, dimethon or carbendazim can be used in case of on-demand sowing and heavy rain. weifu, such as indimethon or weifu, can be used. be used, the dose of carbendazim should be reduced or even eliminated.
② To prevent harmful insects at the seedling stage, pesticide 3911 can be mixed.
③ To avoid seedlings with high legs, it is recommended to use mediamin.
3. Dosage of cottonseed processing chemicals
① The dosage of dimethonium is 0.3% of the seed dosage, carbendazim is 2.5%, and Weifu is 0.2% .
② The dosage of 3911 cannot be increased at will, otherwise it will easily cause phytotoxicity. Generally, 0.5% of seed dosage is appropriate.
③The dosage of mepidamine must take into account the variety.
For varieties that grow regularly at the seedling stage, the dose of mepidamine should be lower; For varieties that grow vigorously at the seedling stage and are easy to form large plants, the dose of mediamin can be increased appropriately. Varieties sensitive to mepidamine cannot be mixed.
IV. Cottonseed treatment method When treating seeds, fungicides and mediamin are usually mixed first, and then pesticides are mixed.
It is difficult to mix the seeds several times. You can get better results by following the following methods.
According to the dosage above, 100 kilograms of seeds require 500 grams of 3911, 300 grams of dimethonium and 20 to 40 grams of mepiproline.
Dissolvee first the mediamin with a small amount of water. Add 5 kilograms of water to the sprayer, then add 3911 and dissolved mediamin to mix, while spraying and turning the pile.
Spray half of the liquid for the first time, then spray the remaining liquid after letting it dry for a while.
After spraying evenly, mix the Dixon powder evenly when the seeds are wet. After 24 hours of planting, spread it out to dry.
Do not expose it to the scorching sun, otherwise dimethonium will decompose when exposed to light and affect the effectiveness of the medicine.
After drying, put it in a bag for planting.
3911 is a highly toxic pesticide, so attention should be paid to the safety of humans and animals.
Cotton seeds can usually be planted directly.
The rate ofThe rate of direct seeding is relatively low. It is best to start drying the seeds half a month before sowing to break the hypnotic state of the seeds. 5-6 hours a day for 3-5 days. After drying, soak them in clean water for 5-6 hours. When the outer skin of the seeds begins to soften, remove them for a germination treatment. Usually, you can dry the seeds for 3-5 days half a month before sowing, and dry them for 5-6 hours every day to break the dormant period of seeds.
Soak the seeds in clean water for 5 to 6 hours. When the outer skin of the seeds becomes soft, remove them and place them in an environment with a temperature of 25-30℃ for germination treatment. It should be noted that to ensure the quality of cotton, it is necessary to select high-quality cotton seeds, which must be full and free of diseases, andthat an appropriate amount of fungicide can be used to dress seeds before sowing to reduce the risk of pests and diseases.
It's time to plant cotton
Planting cotton requires choosing the right time. Cotton is suitable for growing in a warmer environment. From April onwards, the temperature rises slowly, which is more suitable for the growth of cotton. So it is better to plant cotton in April and use rich materials. in trace elements. Loose sandy loam soil.
Generally speaking, the choice of timing is around April each year, when the temperature is stable at 12-14 degrees Celsius for planting, but it should also be adjusted according to the actual situation, otherwise the temperature will be too low and the plants will fail, and high temperatures will cause the development of plants to be delayed and affect their quality. The perHarvest iodine for mature cotton is in September and October. Therefore, the best preparation period for planting cotton is March.