First, choose the varieties of early eggplant, high cold resistance, high quality eggplant varieties, such as Hang Kong No. 1, Hang Wan III. Second, nurturing strong seedlings from the middle of September to early October sowing is appropriate, the use of greenhouses and small arch shelter protection seedlings. Seedling temperature control as much as possible during the day 25-28C, 15-18C at night; suitable temperature 12-15C. 3-4 pieces of true leaves are seeded with nutrients. Throughout the seedling period, care should be taken to prevent leggy and frost damage. The eggplant seedlings raised require shorter seedlings, thicker stems, larger trees and more developed root systems. Third, timely planting suitable for the end of November to early December or early February to grab warm and sunny weather planting. Before the planting, the basal fertilizer should be applied, and the Mushi rot-fertilizer 3500 kg plus compound fertilizer 40 kg. 630 meters of greenhouses are made into 4 pods, with 2 rows per pod and spacing of 40 cm. Fourth, heat preservation cold moisture is the key measure to seize the high eggplant eggplant production in early spring. It should adopt greenhouses + sheds + plastic film covering cultivation, in cold seasons, it should also be covered in straw sheds with straw and other insulation materials. In the early stage of growth, we must focus on the work of heat preservation and cold protection. After the beginning of spring, we must avoid the risk of frozen deposits. We must also prevent the effects of high temperatures on the growth of eggplants, and promote the control and integration. During the growth period, the greenhouse temperature is maintained at 25-28C during the day and around 15C at night. V. Ventilation and light transmission This is an important measure to regulate the greenhouse temperature, reduce the humidity, and supplement the carbon dioxide gas composition. When the weather is fine, it is necessary to remove membranes and ventilate every day and uncover the night cover; in case of rainy weather, there will be small sheds on the greenhouses and the insulation materials on the sheds will also need to be uncovered overnight to fight for light. It is advisable to ventilate the greenhouse for ventilation on the shoulders. Sixth, Baohuabao fruit early spring low temperature, gray mold, heavier, easy to cause falling flowers. Therefore, the use of plant growth regulators must be applied to protect the fruit. The formulas that have proved to be effective in practice are: 2,4-D20-30 PPM plus gibberellin 100-200 PPM plus 0.1% of 50% Skolin wettable powder (or 50% carbendazim wettable powder). It can increase fruit setting rate and promote fruit growth. Seven, pruning leaves "Hangqian No. 1" The advantage of hybridization is obvious. The growth of branches and leaves is more prosperous. It is necessary to prunate leaves in time, especially to remove the old leaves, yellow leaves and diseased leaves. This will not only improve the ventilation and light transmission conditions, but also enable Relatively concentrated nutrients, fruit color fast, rapid expansion, fewer diseases, high yield. VIII. Strengthen the management of fertilizers and fertilizers. The top dressing should be light and the dressing should be strengthened after fruiting. Generally, the urea should be applied in 10-15 kg of urea and applied once every 10 days; 0.3-0.4% of potassium dihydrogen phosphate 4-5 should be sprayed. Times. In combination with topdressing, timely watering, keeping the shed soil moist, and at the same time, ventilation and ventilation after watering, to prevent the relative humidity of the air in the shed is too high. Nine, the main pest control disease is gray mold, can be used 5% quick WP wettable powder 1500 times; or 75% chlorothalonil wettable powder 600 times every 7-10 days 1 time, even prevention 2 -3 times. The main insect pests are aphids and thrips, which can be controlled with 10% of good winter 1000 times solution or 20% of ibuprofen EC 800 times. For red beetles, about 73% of Ketek EC can be used. 10. The principle of “early time and fruit is tender†should be mastered in timely harvesting and harvesting. It depends on the width of the white ring belt at the junction of the sepal and the fruit. It is wider with a white ring (eggeye). It is appropriate. In this way, not only the morning market, the quality of tender, increase early production and economic benefits, but also conducive to the subsequent growth of young fruit stalls, improve the yield of the whole period, the general yield of 4000-5000 kg per mu.
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