Solar greenhouses, winter dong dong eggplant

The greenhouse cultivation of deep winter waxy eggplant is generally planted from late July to early September. The seedling age is 50-60 days, and it is planted from mid-September to mid-October. Harvesting starts from the end of November to early December, and pulls from June to July. It is a key to solve the severe winter and early spring market supply, to achieve the key supply of eggplant anniversary, generally 4000-6000 kg per mu. The main points of its seedling technology are described below:

First, applicable varieties

In greenhouses, deep-winter winter eggplant should be selected for early-maturing varieties that are resistant to low temperature, low light, strong disease resistance, suitable for dense planting, fast fruit development, and good coloring. Such as: Soybean hybrid No. 12, Feng Yan No. 2.

Second, nursery

In order to enhance cold resistance and improve the resistance of eggplant to Verticillium wilt, bacterial wilt, root knot nematode disease, and root rot, deep winter quail eggplant is generally grown by grafting, and the seedling raising time is advanced from mid-July to mid-August. Rootstocks can be used Torurubam or red eggplant, of which Tolubemu has a strong affinity for grafting and the growth potential is enhanced significantly. 1. Seed treatment. The rootstock of Torubam was very slow to germinate and grow, and the seedlings grew slowly, which was about 25 days earlier than the scion variety. Torubam seed is highly dormant and promotes treatment with gibberellin. The rootstock seeds are placed in warm water at 55°C to 60°C, stirred to a water temperature of 30°C, and soaked for 2 hours. The seeds are removed and dried to 100 to 200 mg. / Kg of gibberellin solution soaked for 24 hours, processing at 20 °C ~ 30 °C temperature, and then washed with water, change temperature germination. The scion is soaked in 1% potassium permanganate solution for 30 minutes, washed out and then soaked in warm water at 55°C. Stirring is continued. The amount of water used is five times the amount of seeds, soaked for 15 minutes, and then soaked in warm water at 25°C. 8 ~12 hours, then remove the mucus on the seed coat, wash it, dry it, dry it, dry it, and then put the seeds into a gauze bag, put it at 28°C~30°C, and germinate every day. , Note that the bag is evenly heated. 6 to 7 days budding. If the temperature is changed at a temperature of 30°C for 8 hours and 20°C for 16 hours per day, the budding uniformity can be significantly improved and the buds can be strong. After scion soaking, it can also sow directly without germination.

2. Bed soil preparation. Deep winter eggplant nursery is in the high temperature and rainy season, should be taken to shelter rain, shade, sorghum, etc. to benefit drainage method. The eggplant seedlings are suitable for growing in soft, fertile and moist soils. It is necessary to prepare seedbed nutritious soil. The proportion of nutritious soil preparation is: 50% of mature soil without planting solanaceous crops, 40% of fully decomposed organic fertilizer, and 10% of Fine sand. Each cubic meter is mixed with 1.5 kg of nitrogen, phosphorus and potassium compound fertilizer and 5 kg of plant ash, and the mixture can be sieved. The pH value of 6.5 to 7 is appropriate. A portion of the nutrient soil is spread into nursery beds for spurling seedlings. Ten to 15 square meters of nursery beds are required for one mu of land; some are filled with seedlings to nurse the rootstock Torubam. Rootstock requires about 3,000 cultivars per acre.

3. Seeding and seedling management. Grafting seedlings using splicing method, in late July will promptly sow the rootstock seeds of the buds sown directly in the nutrient bowl, covered with 1 cm thick fine soil. When the rootstock begins to sprout (about 25 days), the nursery beds are topped with nutrient soil and the bottom of the water is poured. After the water seeps, a layer of nutrient soil is spread to level the bed, and the seeds of the scion are evenly spread into the seedbed, covered with 1 cm thick Fine soil. During the emergence, nutrition and seedlings should pay attention to insulation and moisturizing, during the day 25 °C ~ 30 °C, night 18 °C ~ 20 °C; emergence to the true leaf development period, the night temperature dropped to around 16 °C, soil temperature above 18 °C is appropriate. In order to prevent “hats” from being unearthed, the wet soil can be covered with a fine soil. After emergence of the scions, suitable for seedlings, in order to prevent the root cause disease, generally not divided seedlings, requiring daytime 25 °C ~ 28 °C, night 16 °C ~ 20 °C. The nursery is in the high temperature and rainy season. Pay attention to rain, shade, and prevent pests and diseases.

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