The leeks, pakchoi and celery double cropping model have good economic benefits, and the occurrence of pests and diseases is light, and management basically does not require medication. Generally, it can produce 2,500-3,000 kilograms of amaranth per acre, 1,000-1,500 kilograms of Chinese cabbage, 2000-2,500 kilograms of celery, and a total output value of 10,000-1.3 million kilograms per year, which is suitable for use in areas near the urban areas.
The leek was selected for the variety of large-leaved leek and was sowed from late February to early March. Sheds were covered with medium sheds, greenhouses and small sheds. Combine 5,000 kg of composted organic fertilizer per acre before sowing, and build a large shed to cover the film. One week prior to sowing, 50 kg of compound fertilizer was applied and soil preparation was done. The surface was 1.2 meters wide, 30 cm high and 30 cm wide. In order to increase the output of head lice, it should be broadcast at a high density. Generally, the amount of seeds per acre is 10 to 11 kilograms. Sowing before sowing for one day, then soaking in warm water of 50~55°C for 2 days (change water in the middle), remove and germinate after washing, and sow when 50% of seeds are white. After sowing, spread the soil and compost to cover the seeds and water, so that the surface of the soil is moist and take a small shed. The temperature in spring changes greatly, and it is necessary to pay attention to uncovering the film in time. After 10 days of seedlings, 1,500 kilograms of dilute manure was poured per acre. In mid-to-late April, the plant height was 15 to 20 centimeters, and it was harvested and put on the market. Each urea was applied with 15 kilograms of urea per acre. The main pests in the late growth period of leeks are locusts and fleas, and they are treated with caution. In July, according to the market conditions, it was vacated.
After the Chinese cabbage was chopped with leeks, it was ploughed and dried for 1 week. Before the preparation, 2000 kg of organic manure was applied per acre, and the soil and surrounding ditches were sprayed with dichlorvos, and then the insect nets were covered on the scaffold. Use varieties such as dwarf resistance No. 5 and sowing in mid-late July. Use 1 to 1.5 kg per acre and plant 1 to 2 days before sowing. After planting, the seed bed was covered with seed fertilizer and watered to moisten the surface soil. During the growing season, it will be drained in time for rainstorms, and it can be watered in the morning and in the evening. It will be listed on the middle and late August.
The celery is selected from the white water of Qinshui, and in the middle and late July, the seedlings are raised in small arches. Seeds need low temperature germination, specific methods: soaking seeds into the bag after 36 hours, rinse with water, into the refrigerator or hanging in the well 30 cm away from the surface of the water, wash once a day sooner or later, 2 to 3 days to white sowing . Generally, the amount of 0.75 to 1 kg per mu is used. Water before sowing, sowing after the cover soil, take a small arch in the seedbed to cover the shade net. Keep the soil moist after sowing and cover the shade nets after seeing the weather. From late August to late September, seedlings are transplanted in groups of 45 to 60 days. After the cabbage cultivating, the sorghum was ploughed in time, and 3,000 kg of compost organic fertilizer was applied per acre before soil preparation. After the preparation, the surface ditch is 12 to 15 cm deep and 5 to 8 cm deep in the ditch. In the ditch, 50 kg of compound fertilizer and 30 kg of calcium, magnesium and phosphate are applied per acre, and then transplanted at a distance of 10 cm and planted. Definite root water. After the live tree is applied, a dilute human dung is applied. In the field, soil is loosened 2 or 3 times, 20 days after transplanting, 10 kg of urea per acre is applied in combination with loose soil. The diamondback moth is harmful to the growth period of celery, and it can be controlled by spraying with emamectin benzoate, indoxacarb, chlorfenapyr and so on. From early October to November, the plants were harvested and marketed. After the land was empty, the land was ploughed and frozen.
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