Greenhouse special vegetable cultivation (1)

1. Purple Cabbage Purple Cabbage is fed by purple red leaf ball, which is rich in nutrition, especially rich in vitamin C and vitamin U. This kind of cultivar is sturdy, bright in color, high in yield, resistant to storage and transportation, and it is a promising vegetable. 1. Seed sowing seedlings can be selected according to the time of the listing, generally in the local sowing in late December. Select sunny sowing, sowing before the flat surface, soaking the bottom water, the seeds evenly spread into the nursery, the sowing rate of 3 grams per square meter, after sowing covered 1 cm of fine soil. 2. Seedling management The temperature in the greenhouse is maintained at around 25°C during the day and around 15°C at night. After sowing for 20 days - 30 days, when the seedlings grow to 3 true leaves, they should be seeded in time. Water the seedlings in time and rake loose soil to keep the soil dry and wet. 3. The field management is to strengthen the management of fertilizers and waters, and to apply sufficient basic fertilizers. Generally, the organic fertilizer is applied in an amount of 4,000 to 5,000 kilograms per kilogram of organic fertilizer and 20 to 30 kilograms of superphosphate. Each time when watering topdressing ammonia sulfate 7 kg - 10 kg. During the ball stage, the top dressing is combined with water dressing 2 times - 3 times, topdressing urea, watering to keep the ground from seeing moisture, and the ground will dry when it is dry. Second, pay attention to temperature management; purple cabbage from the colonization to the slow seedling stage, The daytime temperature is about 25°C and about 15°C at night. The temperature is gradually reduced after easing the seedlings. The day of the bulbs is 15°C-20°C and the nighttime is 10°C. Second, the scented scent stalk bud is a kind of high nutritional value and high medicinal value of vegetable treasures, with a rich aromatic odor, can be fried, cold, fried, dried and flooded stains. 1. Select appropriate varieties of greenhouse cultivation of citrons, should use cold-resistant, early maturing, shoots, rapid growth, high quality, plant-type short varieties, such as red peony, brown peony and so on. 2. Cultivate the dwarf nursery stock 1 Select the seedbed and sow it at an appropriate time. Select a fertile soil with a groundwater level of 2.5m-3m for the seedbed. Apply 5,000 kg of organic fertilizer and 50 kg to 60 kg of ternary compound fertilizer as the base fertilizer per acre seedbed, and sterilize with 5% phoxim 2 kg - 4 kg per acre. The seeds were full-grown last year, soaked in the film wing and then germinated at a temperature of 20°C to 25°C. In the solar greenhouse in February sowing. First ditch watering, and then sowing; Seed amount per acre seedlings 3 kilograms - 4 kilograms, after sowing fine soil 1 cm -1.5 cm. 10 to 25 °C temperature conditions can be 5-7 days to emerge. 2 timely transplanting, close planting. When the seedlings 1 - 2 true leaves when the seedlings, seedlings from about 10 cm. 3 leaf 4 leaf stage Dingmiao, plant spacing of about 15 cm. In late April, when the seedlings reached 7 to 8 true leaves, they were transplanted to open fertile nurseries and planted 5000 to 6000 plants per acre. 3 Before the burglary, the seedlings were planted. In the 15 days before the arrival of Yanshuang, when the seedlings began to fall off leaves, they were planted for a short period of time to promote dormancy and return the leaves to stems and buds. When the temperature dropped to 3°C-5°C, the seedlings were transplanted to the greenhouse. 3. Cultivation and management in solar greenhouses 1 Soil fertigation and reasonable close planting. Mu Shi decomposed organic fertilizer 3000 kg - 4000 kg and ternary compound fertilizer 40 kg -50 kg, deep plowing 25 cm, leveling to do rake, rake width 1.6 meters -1.8 meters, north-south direction. In the current year, 100-150 strains per square meter of seedlings and 100 strains of 100-year-old seedlings were planted. Immediately after planting, water is poured one time, and the film can be covered after 3-5 days. 2 Strengthen the management of temperature and light water and fertilizer. After the film is covered, the temperature in the shed shall be gradually increased. The temperature shall be 25°C-30°C during the day and 8°C during the night. Before sprouting, sunny days spray water on trunks and buds. 30 days - 40 days after planting, when the top buds germinate after appropriate temperature and humidity, so that the shelf temperature is maintained at 7 °C above, relative humidity 60% -70%. Cabbage period during the day temperature 18 °C -25 °C, night 9 °C -13 °C. In order to improve the quality of camphor buds, the light should be increased as much as possible. The top-dressing nitrogen fertilizer was topdressed 3 days to 5 days before each harvest, and then applied again once during harvest to promote the germination of lateral buds. 4. Timely harvesting and post-harvest treatment 50 days to 60 days after the film is coated, the toadstool buds can grow to about 20 cm. At this time, they can be harvested. When scissors are used for harvesting, 2 to 3 leaves and some lateral buds should be kept in the base of the shoot for each harvest to facilitate the growth of nutrients for the supply of shoots. After harvesting the top buds, the upper 4-6 buds germinate rapidly and the 2nd bud can be harvested within 15 days-20 days. The harvested toon buds should be listed on time. Can also be tied into a small one and put the base flush in clean water for 1 day for short-term preservation, or use a fresh-keeping bag to seal and store it. (to be continued)

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