Planting techniques and disease prevention of spinach

Spinach planting should choose loose and fertile, water and fertilizer conservation, good drainage and irrigation conditions, slightly acidic loam, PH value 5.5-7. When preparing the soil, 4000 kg of rotten organic fertilizer and 40 kg of superphosphate should be applied per mu, which should be high in winter and spring and flat in summer and autumn, with a width of 1.2-1.5m.

Sowing in early autumn in the Yangtze River basin is usually from late August to early September and harvested in batches 30-40 days after sowing. Sowing can also be advanced to July or postponed to mid-late September. If the seeds are sown from late October to early November, they will be harvested in spring next year. Spring sowing is usually sown from February to April, but the suitable time is sowing in the middle of March and harvested 30-50 days after sowing.

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How to sprout and sow seeds?

Those who sow seeds before the first ten days of September should soak the seeds first to promote germination. The method is to soak the seeds in normal temperature water for 12 hours, treat them at 4 degrees after treatment for 24 hours, and then sprout at 20-25 degrees. Or the seeds after soaking will be suspended on the water surface of the well to promote germination, and after 3-5 days, the seeds will sprout and sow. Those who sow seeds in early September do not need to soak seeds to promote budding. The amount of seed used varies with cultivation area, cultivation season and harvest method, etc., generally 5-7 kg per mu for autumn sowing and 3-4 kg for spring sowing. In high temperature season, severe winter area and repeated harvest and cultivation, the amount of seed used should be increased appropriately. Sowing methods are often used for sowing and strip sowing. The sower is required to sow evenly, and after sowing, rake lightly with a tooth rake once, so that the seeds are buried in the soil. Sowing in early autumn, in order to prevent high temperature and rainstorm, can cover the sunshade net after sowing and protect seedlings in the early stage. Planting techniques and disease prevention "inline=" 0 ">

How to get fat?

Autumn spinach has high temperature and easy to drought in the early stage of growth, so it can be applied with fertilizer and water. It is appropriate to use 20% to 40% of mature human feces and urine. Overwintering spinach should be fully fertilized before spring is warm. The spinach harvested by stages should be fertilized in time after each harvest. Pay attention to nitrogen control to prevent excessive accumulation of nitrate and nitrite in spinach.

How to control diseases and insect pests?

The main diseases and insect pests are downy mildew, anthracnose and spinach leaf miner. Downy mildew was sprayed with 25% metalaxyl wettable powder 800-1000 solution once, and the safe interval was 10 days. Anthracnose was sprayed with a 700-fold solution of 25% carbendazim wettable powder, with a safe interval of 10 days. Leaf miners were sprayed with 2.5% deltamethrin EC 30000ml / mu once, and the safe interval was 7 days. 8. How to harvest? Autumn vegetables were harvested 30 days after sowing, once every 20 days, for a total of 2-3 times. Early sowers produce about 1250 kg per mu, late sowers about 2000 kg, and overwintering about 2500 kg. Spring pickles are often harvested at one time, yielding about 1250 kilograms per mu.