Planting Chinese cabbage in greenhouse requires 200-300 grams of seeds per mu, 3000 kilograms of decomposed organic fertilizer is applied per mu, and the yield of Chinese cabbage is about 2000-3000 kilograms per mu.

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Cultivation techniques of Chinese cabbage (rape) in autumn greenhouse

1, variety selection

September to 1 1 month in autumn is also the best season to cultivate Chinese cabbage in greenhouse, with lighter pests and diseases, faster plant growth and more varieties to choose from, such as local varieties Shanghai Qing, Aikangqing, Suzhou Qing, etc., but in order to improve the commodity quality of vegetables and obtain higher economic benefits, it is better to choose hybrid varieties with good commodity and popular market, such as those used more in production.

2. Sow seeds

In autumn, Chinese cabbage is generally cultivated in greenhouse by direct seeding. The sowing date is from late August to11early month.

Apply 3000 kilograms of decomposed organic fertilizer per mu, then turn over the ground to make a flat border, and the width of the border is about 1.5 meters. The length of the border depends on the width of the greenhouse; Sowing can be done by drilling or sowing. The row spacing of drilling is about15cm, and about 200-300g seeds are evenly sown per mu, and then covered with soil, stamped and watered.

3. Field management

After the emergence of seedlings, it is necessary to water them with water in time. After the real leaves grow, the seedlings should be thinned, and the sick and deformed seedlings should be eliminated. It is sunny in September ~10, and the temperature in the greenhouse is high. Attention should be paid to ventilation and cooling. The temperature should be kept below 30 degrees Celsius as far as possible, and water should be used frequently to prevent drought. If possible, sprinkler irrigation equipment can be used to keep the air and soil moist. When the four leaves of the plant are United, quick-acting fertilizer can be applied with water, such as every. 1/after kloc-0/month, attention should be paid to heat preservation and anti-freezing. If the temperature is lower than -4 degrees Celsius, freezing injury will occur. Smoke can be released in the greenhouse from 3 am to 4 am to prevent freezing. /kloc-If the temperature continues to be lower than -6 degrees Celsius after 0/2 months, the autumn greenhouse cultivation should be stopped.

4. Harvest

Harvest in time, and determine the harvest period according to market demand. The general growth period is 35-50 days.