Summer Cabbage Cultivation in Sunlight Greenhouse

Solar greenhouses generally can only be used as open field in the summer, and their facilities cannot play a role. If Chinese cabbage is planted in it from June to September, it will be available in the market from late July to early September. This will not only enrich the variety of vegetables in the market, but also provide sunlight. The role of greenhouses has achieved considerable economic benefits. The cultivation points are as follows: First, select the appropriate varieties to choose suitable for summer cultivation, high temperature and humidity resistance, disease resistance, more early and heat-resistant Chinese cabbage varieties. Second, the transformation of greenhouse solar greenhouse film should be complete, not leaking, high ground. Dig 30 cm wide and 40 cm deep around it. A 90-centimeter-wide vent opening at the top of the tent-die interface also opens a 92-cm-wide vent in the shed, and then is covered with gauze from the west to the east. In case of heavy rain, the vents must be closed in time. The vents on the north wall must be fully opened and covered with gauze. This can cool the air on the one hand and prevent rain on the other. The gauze can also prevent insects. 3. Soil preparation and fertilization Before ploughing, 667 m2 (1 mus) will be applied to rotted organic fertilizers 4000-5000 kg and compound fertilizer 25-30 kg, and then plowed 20-35 cm. After the leveling, it will be 50 cm wide. . 4. Seed sowing in mid-June in the indoor broadcast. Directly press 30 to 40 cm of planting distance to open shallow holes and pour enough water. After the water infiltrates, sow 3 to 4 seeds per hole. Then cover 1.2 to 1.5 cm thick soil, after sowing. Irrigation 1 small water, irrigated 1st on the 2nd day, irrigation of the 3rd water after the seedlings, 1st seedlings when the cross is pulled, 3 to 4 leaves, 1 seedling per seedling, after the seedlings and Dingmiao Each time the water is poured, make sure the Miao Qi Miao Zhuang, about 3500 to 4000 strains of 667 square meters. Fifth, fertilizer and water management between the post-emergence 667 square meters of urea 3 to 4 kg, 667 square meters of lotus root application of urea 10 to 15 kilograms, immediately after fertilization, water, then depending on the moisture content every 4 to 5 days watered once. The ball period of 667 square meters with urea 25 ~ 30 kg plus 50 kg of cooked cake fertilizer topdressing, this period to a lot of water, every 3 to 4 days, to ensure that the soil see wet not dry; late ball appropriate water control, pouring Water is good for the evening. Stop watering 4 to 5 days before harvest. Sixth, pest and disease control due to gauze closure, isolation of the insect source and heavy rain invasion, fewer pests and diseases, basically no spraying. If it is not closed tightly, it will be treated with 2.5% deltamethrin 500 times at the seedling stage to prevent and control aphids, and it will also prevent virus diseases. Cabbage caterpillars during growth will be treated with Bt emulsion. The main diseases were downy mildew and soft rot. The former used 25% metalaxyl 800 times and the latter was sprayed with neophytin or agricultural streptomycin 200 times.

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