What are the high-yield cultivation techniques of summer sowing leek?

Leek has good quality and high benefit, and can be sown all the year round. The key points of high-yield cultivation techniques of summer sowing leek are summarized as follows:

1. Variety selection

Select snow leek No. 6, No. 8, flat leek, which are of good quality, high yield, disease resistance and low temperature resistance.

2. Seed soaking and budding

Generally, summer sowing takes place from May to June every year. Five days before sowing, soak the seeds in lukewarm water of 30 ℃ and 40 ℃ for about 20 hours, then filter out the shrunken seeds to wash the mucus, wrap the seeds in a wet cloth, accelerate germination under the condition of about 20 min, rinse the seeds with clean water twice a day, and sow when 80% of the seeds are white.

3. Seedbed preparation

Combined with soil preparation, 3000 kg of organic fertilizer, 50 kg of compound fertilizer, 3 kg of phoxim and 1 kg of carbendazim wettable powder were applied per mu.

4. Sowing seeds

After the seedling bed was fully watered, the germinated seeds were spread evenly on the seedling bed and covered with 2cm thick fine soil, then 40% phoxim EC was sprayed 1000 times, and finally covered with plastic film, which was revealed in time when 70% of the seedlings were unearthed.

5. Seedling stage management

After the seedlings come out, water should be watered every 7 days, 8 kilograms of urea should be applied per mu, and 75% chlorothalonil wettable powder will be sprayed with 1000MUR 1500 times to control the water and fertilizer to squat the seedlings. When they reach 10-15cm, they can be transplanted.

6. Transplanting

Before transplanting, 3000 kg of organic fertilizer, 50 kg of compound fertilizer, 2 kg of borax and 1 kg of zinc sulfate were applied in the field. After deeply turning into the soil and leveling the soil moisture surface, about 10 seedlings were planted in each hole, and the tiller nodes should be exposed when planting.

7. Post-planting management

After planting, it is necessary to irrigate enough fixed root water to ensure the survival rate of seedlings. When the soil is hardened, hoe and loosen the soil in time to stretch the roots and form strong seedlings. When the seedlings grow to about 40cm, 20 kg of compound fertilizer and 8 kg of urea should be applied per mu.

8. Pest control

The occurrence of Botrytis cinerea and rust can be timely and effectively prevented with 1500 times of 50% Sukeling wettable powder or 1500 times of 15% triadimefon wettable powder. Leek and thrips can be controlled with 1000 times of 40% phoxim EC or 2000 times of 5% pyrethrin EC.