Efficient multiple cropping of cabbage, sweet potato seedlings, eggplant and cauliflower

Cabbage (cabbage), sweet potato seedlings, eggplant, cauliflower (cauliflower), four kinds of harvest in a year, considerable economic benefits, 5000 kilograms of cabbage per mu, about 80, 000 sweet potato seedlings, 3500 kilograms of eggplant and 3000 kilograms of cauliflower, with an average benefit of more than 8000 yuan per mu. Cabbage was selected as a high-yield and early-maturing variety 8398. Soil moisture and fine soil preparation were made before winter, 5000 kg of rotten high-quality soil fertilizer, 50 kg of ammonium bicarbonate and 50 kg of calcium superphosphate were applied per mu as base fertilizer, and seedlings were raised in a small arch shed at the end of December. After sowing, it kept 20: 25 ℃ during the day and 10 ℃ at night. The seedlings were divided into 2 leaves and 1 heart stage, and the squatting seedlings were planted according to the row distance of 10 cm. There were 3 true leaves combined with watering, and 10 kg of urea was applied per mu. The temperature was controlled below 25 ℃ in daytime and below 10 ℃ at night. Make a bed in late February, with a width of 80 cm. At the beginning of March, there were 4000000 plants per mu. After planting, the seedlings were protected with small water, then covered with plastic film, and watered every other line after 3-4 days. The rosette was watered twice during the heading period, combined with 50 kg ammonium bicarbonate per mu. Cypermethrin was used to control Pieris rapae. It was harvested in mid-April and finished at the end of April and the beginning of May. The sweet potato seedlings were raised in a small arch shed around March 20. The sweet potato seedlings were planted in the cabbage line around April 20 with 20000kg of potato seeds per mu. The sweet potato seedlings were sold after wheat harvest. A total of 20 sweet potato seedlings were cut, and a total of 80,000 ~ 90,000 sweet potato seedlings were cut. The eggplant chooses the local variety Da Zi Hei Men eggplant. Seedlings were raised in a small arch shed at the end of January and the beginning of February. At the end of April, a row of eggplant was transplanted in the cabbage row and in the middle of the border, with 15001600 eggplants per mu. After planting, small water was poured in time, topdressing was applied once at the early flowering stage, and 1000 kg of rotten chicken manure and 50 kg of compound fertilizer were applied per mu. During the whole growth period, 100 kg ammonium bicarbonate was applied in combination with watering per mu, and it was applied twice. The occurrence of diseases and insect pests in the field should be controlled in time. It goes on sale around June 20 and ends in early August. Japanese Snow Mountain varieties are selected for cauliflower. Raise seedlings before and after July 20, use sunshade net to shade and cool down. Pay attention to prevent rainstorm and high temperature. After emergence, cool water is sprayed at 4: 00 p. M. every day to cool down, and timely drainage after rain. After clearing the garden, eggplant was ploughed and fertilized, with 5 square soil fertilizer, 50 kg cake fertilizer and 50 kg compound fertilizer per mu. Make beds, 1.1 meters wide, and plant two rows in each bed. Transplanting at the end of August, the row spacing is 35cm to 40cm, about 2000 trees per mu. After slow seedling stage, 25 kg diammonium phosphate was applied per mu. Squatting seedlings were mainly used in the early growth stage, and 1015kg urea was applied per mu (divided into 2 times) when the flower bulb was about 3 cm. Watering should depend on the field temperature. It is usually lightly watered every 5-7 days, listed at the end of October and ended in mid-November.