Key points of Seedling raising techniques of Pepper in early Autumn

Pepper seedling raising in early autumn mainly solved the problems of high temperature and drought, strong wind and rainstorm, avoiding excessive growth of seedlings, prevention of diseases and insect pests and so on, while doing a good job of seed treatment, promoting germination at room temperature, selecting hole plate sowing and so on.

I. seed treatment

After selecting the variety, dry the seeds for 4 hours, then disinfect them with trisodium phosphate solution, soak them in clean water for about 8 hours, and then sprout.

Second, sprouting at room temperature

About 30 ℃ is the suitable temperature for sprouting. Wrap the soaked seeds in cotton cloth and wrap them with a plastic film to moisturize. Rinse the seeds with clean water every half day, and then wrap them up to accelerate germination. It will take about 60 to 70 hours to sprout. When the bud is about 3 mm (at this time, the seed is said to be white), sowing is the best; if it can not be sowed in time, the seeds should be preserved under the condition of about 8 ℃, and the sowing conditions should be created as soon as possible.

Third, the preparation of the acupoint plate

Select special seedling medium and 72-hole hole plate, vegetable farmers can calculate the number of seedling plate and medium needed according to their own needs. After mixing the seedling medium with appropriate amount of phosphorus and potassium compound fertilizer, special biological micro-fertilizer and other trace element fertilizer, add water and stir evenly, then fill the hole plate to flatten (scrape flat with a straight board) and sow seeds.

Fourth, prevent high temperature

After sowing, pour the hole plate with water, spray Pulick to prevent the disease, and then cover with plastic film to moisturize. At this time, we should pay attention to shading and cooling, strictly prevent steaming seeds and affect seedling emergence. At this time, the temperature should be adjusted below 30 ℃ in the daytime and below 18 ℃ at night, and the plastic film can be removed when the seedlings are about 80%. With the growth of seedlings, the time of covering the sunshade net can be shortened, which is more conducive to the growth of seedlings.

V. Prevention of drought

After sowing and emergence, always pay attention to the humidity of the seedbed, do not be too wet or too dry. Some vegetable farmers are afraid of seedling growth and controlled watering, resulting in excessive drought of the point plate, which will cause capillary root dehydration, drought and injury, affecting the absorptive capacity in the future, forming weak seedlings, and being susceptible to disease. Therefore, it should be properly watered, and it should be in the morning on a sunny day.

VI. Prevent the growth of young people.

The overgrowth of pepper seedlings is mainly due to high night temperature, strong respiration, excessive consumption of nutrients, and sufficient nitrogen fertilizer and water. In addition, the seedlings are too dense to block each other from the sun, affecting photosynthesis will also lead to overgrowth. Therefore, to prevent the excessive growth of seedlings, we should first avoid excessive night temperature and excessive humidity in the disk; the second is to apply less nitrogen fertilizer when fertilizing; the third is to wait for the seedlings to grow to a certain size, enlarge the distance between points and plates, increase ventilation and light transmission time, and strengthen photosynthesis to avoid excessive growth of seedlings.

VII. Prevention of rainstorm damage

If the nursery bed is set in the shed, the method of covering the seedling bed with one film and two nets (plastic film plus sunshade net and anti-insect net) is usually chosen. When there is heavy rain, the greenhouse film can be pulled down to prevent Rain Water from drenching the seedlings and Rain Water to spread germs.

VIII. Prevention of diseases and insect pests

At this stage, because the external environment is more conducive to the occurrence of insect pests, so we should also strengthen the prevention and control of insect pests. Such as setting up an insect control net in the seedling shed, using the tendency of pests to set up a yellow board to trap aphids to trap whitefly, using a blue plate to trap thrips, and so on, chemical control should be selected if necessary. At this time, the diseases that should be prevented are seedling quenching disease, blight disease and virus disease in the middle growth stage. in addition to seed disinfection, seedling bed disinfection should be carried out, and sprinkler irrigation can be mixed with Nong 4 or seedling fungus Fengshou No. 1 after sowing, which can not only effectively restrain soil-borne diseases at seedling stage, but also improve the development of root system at seedling stage.

Lu Liyan, Agriculture and Animal Husbandry Bureau of Guangping County