I. Variety selection of cold-resistant, disease-resistant, high-yield generation of early green, mosaic and other varieties of pumpkin.
Second, nursery 1. Time: sowing in early August, the end of August to early September colonization into the greenhouse. 2. Preparation of nutritious soil: Choose 7 fertile soils that have not been cultivated in 5 years, mix well with 3 parts of organic manure that has been thoroughly decomposed, sifted, and filled with nutrients. 3. Germination sowing: Put the seeds in warm water of 55°C, and continue stirring. When the water temperature drops below 30°C, soak seeds for 8 hours. Wrap with a clean, damp cloth and germinate at 25-28°C. Seeds begin to germinate in 2-3 days. Seeds can be sowed when 70% of the seeds are white. Select the fine sunny morning sowing, soak the water within the nutrient bowl before sowing, put a seed in the center, put the seed flat and the bud tip down, cover 1-1.5 cm thick fine soil. In order to prevent pests and diseases, cover the soil and spray 50% carbendazim WP 600 times and 80% DDV EC 1000 times. After sowing, a small arch shed was built on the seedbed, the cover membrane was protected from rain, the shade net was shaded, and the insect-proof nets were surrounded to prevent insects. 4. Seedling management: Drought watering seedling stage, generally do not fertilize, grow to 3-4 true leaves, buds can be planted.
3. Fertilization for site preparation 1. Site preparation: Deep plowing 30 cm before ridging, combined with deep plowing, 5,000 kilograms of high-quality circumfertilizer and 50 kg of NPK fertilizer with full maturity are applied to each mu of land, and the ridges are ridged. 2. Formulated fertilization: mainly organic fertilizer, supplemented by chemical fertilizers, according to the required fertilizer rules and the content of nitrogen, phosphorus and potassium in the soil to determine the ratio of nitrogen, phosphorus and potassium in the chemical fertilizer; according to the yield of the melon, determine the amount of fertilizer.
IV. 15 days before planting and colonization, and 3 days before planting, conduct disinfection within the greenhouse: Specific methods: Sunny morning, press the area of ​​an acre of greenhouse, mix 80% dichlorvos EC 250g with sawdust, and 2-3 kg sulfur The powder is mixed and ignited at 10 points in the shed, sealed for a day and a night, and when the air is odorless, the animals are colonized according to their size. Large row spacing 80 cm, small row spacing 50 cm, spacing 50 cm. After opening the hole, put the seedlings with nutritious soil into the hole, then water inside the hole, and the water infiltrate the soil.
V. Management after planting 1. Colonization to the early stage of fruiting management: The greenhouse outlet is covered with pest control nets to prevent insects. The daytime temperature is 25-30°C and nighttime is 15-20°C. Watering is controlled in the early stage. When the first melon grows to 6-10 cm, the melon fertilizer is chased with water, 20-30 kg per mu. In order to improve the rate of sitting, artificial pollination can be used. The specific method: 9-10 am, use the male flower that was opened on the day to gently apply on the pistil stigma of the female flower, and also use a 20-25ppm 2,4-D daub to open. Female flower stalks. 2. Management of the melon period: The first melon should be harvested early so as not to affect the growth of the melons. Keep the temperature at 25-30°C during the day and 15-20°C at night. Remove the old leaves in time and wipe off the lateral buds. In general, one harvest of water is used for harvesting one pound of melon, and appropriate amount of compound fertilizer is applied at 15-20 kg per mu.
6. Priority shall be given to the integrated control of diseases and pests through agricultural control, physical control, biological control, and scientific and reasonable chemical control. The diseases of zucchini mainly include viral diseases and powdery mildew. Insect pests are mainly locusts. 1. Viral disease: mainly transmitted through locusts, and the environment in which locusts occur is conducive to the occurrence of viral diseases. There are currently no effective pharmaceutical agents to prevent viral diseases. Therefore, squash must be strictly controlled in the cultivation of squash, reducing or eliminating plant susceptibility is the prevention and treatment of viruses. Effective measures. Control methods: 1 Before sowing, soaking in warm water of 55°C for 40 minutes, and constantly stirring. 2 Seedlings and shelters at the outlet of the greenhouse, with insect nets to prevent insects. 3 increase organic fertilizer, a reasonable ratio of nitrogen, phosphorus and potassium, make the plant robust, improve resistance. 4 Remove the weeds and reduce the pest host. 5 eliminate aphids, whiteflies, thrips, and other pests. 6 chemical control: use 20% of the virus A 500 times, or 1.5% of the plant disease Ling 1000 times, or 83 booster 100 times spray control. When spraying three principles to the three do not want the three principles, that morning spray, no afternoon spray; sunny spray, not cloudy spray; alternate medication, not a single medication. The purpose of spraying on sunny mornings is to reduce the humidity in the shed and create an environment that is not conducive to the occurrence of diseases and insect pests. The purpose of alternate use of drugs is to prevent the virus (bacteria) from developing resistance. 2. Powdery mildew: powdery mildew occurs, 15% of triadimefon 1500 times liquid, or 2% of Wuyimycin water 200 times, spray control. 3. Locust: sprayed with 50% anti-inverse WP 4000 times, or sprayed with 1.1% of nicotine EC 800 times.
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