1, choose the species. Select early-maturing varieties suitable for cultivation in the protected area (not suitable for late-maturing varieties) such as Xiaolan watermelon, Fengle No. 1, Jubao No. 1, Zhengza No. 5, etc. 2, nursery. Seed sowing from the end of July to the beginning of August (not later than August 10th). Watermelon seeds should be sterilized and soaked before seeding. Live seedlings in the nutrition bowl should be 1-1.5cm in depth. Then they should be covered with plastic film, sheltered and shaded. The nets are protected from rain and the mulch film is removed in time after emergence. 3, Shizujifei, soil preparation. Mushi human feces and other decomposed organic fertilizer 3000 kg, NPK fertilizer 75 kg, evenly. Integral deep trenches, sorghum, lotus root 2.5-3 meters wide, 35 cm wide, so that irrigation can be dry, can be arranged. 4, colonization. At the end of August or early September, the seedling age is about 20-25 days. When the leaves are in one heart, they can be transplanted and planted. About 800 plants per acre were planted and the nutrition bodies were removed during transplanting. The soil was slightly deeper than the original nutrient soil. After planting, the root water was poured to cover the mulch. To prevent heavy rain hazards, shelter should be sheltered immediately after planting. 5, post-plant management. The suitable temperature for the growth of watermelon is 25-30 degrees. When the temperature is low, the growth is slow. When the temperature is high, it is easy to induce virus disease. The field management grasps the principle that the night temperature is not less than 18 degrees and the daytime temperature does not exceed 32 degrees. From August to mid-September, the temperature is still relatively high during the night from August to mid-September, and only the top membrane is used as a shelter from rain. In mid-to-late September, as the temperature gradually decreases, the apron membrane must be enclosed, the shelter closed at night, the ventilation and the shelter must be closed. The management method is similar to greenhouse vegetables. One week after the colonization of watermelon, it began to fall vines. Using double-branching techniques, the second female flower was selected and each 1-2 melons were left. Guapeng was about 1 kilogram to make melons. The length of the melons was basically set. Melon, melons have 6-7 mature, gourd. During field growth, it is appropriate to apply two fertilizers (extension vinegar and plum fruit fertilizer) and two waters at the same time. 6, pest control. Watermelon seedling diseases mainly include blight and damping-off. Chlorothalonil can be used 600 times as much as mancoson manganese zinc 100 times as mixed spray, sprayed once every 5-7 days, and sprayed 2-3 times continuously. The disease during growth period is mainly virus disease. And bacterial blight, virus A and wood can be used to spray MnZn; insects are mainly locusts, sub-night fly and night moth, etc., can be used once again net, trichlorfon, anti-Taibao, or stuck grams of pesticides such as control. 7, harvest. Autumn watermelon is usually harvested after 40 days before harvesting. China Agricultural Network Editor
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