The overwintering of summer cucurbits in greenhouses has a long growing period, high yield, and good efficiency. Now it is in the period of squashing, and the management of peasants in the greenhouse must be well managed in the following aspects: First, temperature management The normal management period during the melon period is 23°C-28°C during the day and 12°C-15°C during the night. The minimum temperature in the winter should also be maintained at more than 10°C. If the temperature is low, the temperature can be temporarily increased. Second, water and fertilizer management 60% of the root melon weight 150 grams when pouring small water, acres of topdressing NPK fertilizer 15 kg. Watering twice during the fruiting period, top dressing once, using 25 kg compound fertilizer per mu, and watering as little as possible during low temperature. The watering of the melons increased at the later stage, and nitrogen and potassium compound fertilizers were the main fertilizers. Third, light regulation Without affecting the temperature, weeds should be pulled as early as possible. When the temperature is low or cloudy, it is necessary to intermittently release the air, to supplement carbon dioxide and reduce the humidity in the greenhouse, and to reduce the occurrence of gray mold and sclerotinia. Conditionally add a light curtain on the back wall to add grace to the back of the shed. Fourth, plant adjustment Zucchini leaf area is large, hanging vines, picking leaves, hiccups is an important measure for high-yield cultivation over winter. When the squash squash grows to 20 centimeters long, it must be hung in time. After the old leaves are harvested, the old leaves that have grown for more than 30-40 days are gradually removed from the petioles. If the old leaves are removed in time, premature aging is often caused by excessive nutrient consumption, and the plants are also susceptible to powdery mildew. The zucchini is easy to sprout lateral buds from the leafhoppers after emergence, and new leaflets and female flowers are produced. These female flowers are not easy to sit on the melons, and even if they are sitting on the fruits, they do not grow long or have malformed melons, thus affecting the commercial and economic benefits of the melons. It is necessary to fight in time to eliminate malformed melons and sick melons and prevent excessive consumption of nutrients. V. Anti-dropping and fruiting 1. Artificial pollination. Before 8 to 9 am, the male flower tears off the corolla and touches the pistil stigma. 2. Painted flowers. Apply pistil stigma or corolla with 25-30 mg/kg of 2,4-D before 10 am 6. Harvesting 1. Harvest timely in the early period. When the root melon grows to 250-300 grams, it is harvested early so as not to affect the melons and growth of the second and third root melons. The melons and large melons should be picked early. 2. It is advisable to pick late, with 400-500 g harvesting being appropriate. VII. Pest Control 1. Locusts. With 20% speed killing Ding 2000-3000 times, 2.5% deltamethrin EC 2000-3000 times evenly sprayed. 2. Viral disease. At the beginning of the disease, 20% of the virus A wettable powder 500 times solution or 1.5% of the diseased disease emulsion 1000 times was sprayed, sprayed once every 7-10 days, and sprayed 2-3 times. 3. Powdery mildew. With 25% triadimefon 2500 times, spray 5-7 days, even spray 2-3 times. 4. Gray mold. Can be used 1000 times liquid antivirus or 2000 times liquid fast Keling, 5-6 days spray 1, even spray 2-3 times. COVID-19 Saliva Midstream,Self-check COVID-19 Test,Saliva Midstream Test,COVID-19 Antigen Test Saliva Midstream Weihai Kangzhou Biotechnology Engineering Co.,Ltd , https://www.weihaikangzhou.com