Green stalks are a kind of Chinese cabbage, also known as small leeks. The plant type is erect, and the head is large. The plant height is about 28 cm and the development degree is 28 cm and 30 cm. The leaves are smooth, whole, and the leaves are green and broadly ovoid. Petiole green and white, generous. The base is slightly concave. The following is the pest control cultivation technology of the green stem.
Insect cultivation
First, before the selection of the sputum, it should be a non-cruciferous crop. It is better to use early-maturing edamame, followed by root vegetables, and spring cabbage and spring broccoli. If you want to cultivate even the sorghum, you should plow the soil after the end of each simmer and ridge for 5 to 7 days to reduce the occurrence of pests and diseases.
Second, the selection of varieties to choose disease resistance, strong resistance, good adaptability, excellent quality, good commodity varieties, mainly Xinzai No.1, early maturing No.5, Zhongmu white stem, can promote the new summer green variety. Seed dressing with 75% chlorothalonil, 50% copper succinate, 50% Fu pod double, 50% chlorhexidine wettable powder, the dosage is 0.4% of the seed.
Third, after applying the base fertilizer, the crops are harvested, and the deep-plowing is applied to the base fertilizer. The base fertilizer is applied with 80-100 kg of organic fertilizer per mu, and 1500-2000 kg of decomposed farmyard manure. The fertilizer is used as little as possible. Each shed is 6 meters wide, 2 inches in the shed, 10 to 15 centimeters high, and a walkway in the middle for easy harvesting.
Fourth, the seeding net is evenly spread 1.25 to 1.5 kg per acre, and covered with a floating net floating surface, immediately watered. Insect net use specifications: 20 ~ 22 mesh light silver gray insect net. Internet time: Wait until the cabbage is out of the seedlings, and open the sunshade net on the raft to open the Internet immediately. Internet requirements: Cover the entire greenhouse with a 10-meter wide insect-proof net. The net is flattened with bricks or mud around the shed, and the shed is left at the door (the screen door) for easy access to the shed management.
V. Field management topdressing: Since the growth period of Chinese cabbage is short (20~25) days, on the basis of applying base fertilizer, there is no need to topdress during the whole growth period. Watering: depending on the climate and soil moisture, can not be too dry, not too wet, usually watering 3 to 4 times during the growth period. Harmless treatment of pests and diseases: Due to the whole process of covering with insect nets, it is not necessary to use pesticides to control pests. The market harvesting is suitable for morning and evening, and the products are listed on the market. The output is generally 1000-2000 kg per mu.
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