Short-season leafy vegetables include: small rapeseed, oil wheat, lettuce, shallots, Chinese cabbage seedlings and so on. The planting technology is simple, including ditching, leveling, trampling, watering, sowing, covering soil, pest control, disease prevention and management. Cultivation technology of oilseed vegetables in greenhouse It takes only 4045 days from planting to harvesting, and the yield per mu can reach more than 3000 kg. The key points of cultivation techniques to be mastered are as follows. 1. Seed treatment, soaking seeds to accelerate germination. The seeds are wrapped in gauze, soaked in cold water for about 1 hour, and then picked up and placed at 1520.

Or put it in the cold room of a household refrigerator for 23 days, and the seeds can be sown after they are exposed. 2025 grams of seeds per mu. Second, the seedbed is prepared. The seedbed is selected from plots with Gao Qian terrain and strong water and fertilizer conservation ability, and more organic fertilizers are applied. The seedbed per mu of cultivation land is 1520 square meters. 3. When sowing, mix the seeds with a proper amount of fine sand, separate the seeds, and then sow and raise seedlings. Be careful not to sow closely to avoid overgrowth of seedlings. Cover the seeds with 0.5 cm thick soil mixed with phoxim, and set up a shed to prevent sun and rain.

Seedling management: when the seedlings grow two true leaves, transplant the seedlings with the density of 6 cm and 6 cm. The seedbed should be kept moist and cool at noon. Pay attention to the prevention and control of pests and diseases at seedling stage. 5. Soil preparation, planting, field planting, field planting and field planting in greenhouse about 25 days after sowing, at this time, 56 true leaves grow. Before planting, 35.004 million kilograms of decomposed organic fertilizer, 2025 kilograms of phosphate fertilizer, 4050 kilograms of nitrogen fertilizer and 0/0/0/5 kilograms of potassium fertilizer/kloc-0 were applied per mu. After general application, soil preparation, ditch width 1 1.5 m, plant spacing 10 cm,10/5 cm, 45,000 plants per mu.

After transplanting, thoroughly irrigate the planting water. (1) Management before shed closing. After planting seedlings slowly, apply a small amount of available nitrogen fertilizer 12 times with watering, and generally apply 5 kilograms of urea or ammonium sulfate per mu to promote plant growth and development. In the future, we should always keep the soil moist and cultivate and weed in time. 2) Post-shed management. Oilseed vegetable is a fast-growing leafy vegetable, and its suitable growth temperature is 1825. When the temperature is lower than 12 at night, it will be locked in the shed. After the shed is buckled, adjust the temperature and relative humidity in the shed in time. Generally, the relative temperature in the shed should be lower than 90%.