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Overwintering squash efficient cultivation techniques
Overwintering in the greenhouse, the zucchini grows for 210-240 days, and the output reaches 5000kg/667 m2. The benefit is good. It can be listed on New Year's Day, the price can reach 3-4 yuan/kg, and the investment cost is about 2500 yuan per 667 m2. Income can be as high as 1.2-l.5 ten thousand yuan/667 m2. The cultivation techniques are as follows: 1. The species selection is generally selected from early-maturing and high-yielding varieties, commonly used as early green generation zucchini. Second, nursery (a) cultivated Muyang Temple: In the greenhouse, from the front of l.5m Department, east-west to do, north-south width of 1.2m, east and west long, depending on the cultivation area. (2) With nutritious soil: 40% of high-quality organic fertilizer, 60% of fattened soil, 6 kg of superphosphate per m3, 2.5 kg of diammonium phosphate, 50 kg of decomposed chicken manure, 0.5 kg of potassium dihydrogen phosphate, fully mix and sieve spare. (3) Preparation of paper baskets: 1,800 paper baskets per mu, 12 cm in diameter and 10-12 cm in height, put the nutrient soil into the paper basket, and evenly arrange them in the nursery bed, and pour a bottom water before germination. The water surface reaches the paper. The upper edge. (D) nursery: 1, use the amount: 250g. 2, seed treatment: soaking before drying species l-2 days. The seeds were soaked in water at a temperature of 55°C which was 6 times the seed, and the mixture was continuously stirred until the water temperature dropped to 30°C and continued for 6-8 hours. Seed the net surface of the seed mucus, rinse, drying the moisture, wrapped with a clean wet cloth, germination at 30 °C under 30-40 hours, when the bud length 0.3-0.5cm can be sown. 3. Sowing date: Sunny morning in late October and late November. 4. Seeding: After the seedlings are ready for seeding, the seeds are piled with a sieve of fine wet soil, the height of the pile is 1.5-2cm, and the mulch is sown. 5, after the broadcast management: timely exposure during the day to fight for light, cover timely insulation at the evening, the day before emergence 30 °C, 13-15 °C at night, generally 3-5 days Qimiao. The daytime temperature is 18-22°C and 7-10°C at night. After the second leaf is flattened, 0.2% potassium dihydrogen phosphate is sprayed once, and it can be planted in about 35 days. Third, planting (a) site preparation fertilization: Mushi high-quality farmyard fertilizer 10000kg, 50kg diammonium phosphate, cake fertilizer 150kg, urea 10-20kg, 2/5 Pu Shi, then deep 2-3 times. (B) Colonization: Before planting, divide the north-south direction by 80-100cm spacing and open the ditch. Apply the remaining 3/5 basal fertilizer into the ditch, mix well with the soil, then water along the ditch, and immerse the seedlings at a spacing of 45cm after half of the water infiltration. Put in the ditch, after the completion of seepage, seal the ditch with soil. About 1500 colonies per 667 m2 were planted. After planting, water the planting water. After easing the seedlings, they smashed between two rows of zucchini. IV. Management after planting (a) Management of the early stage of the melon: 1. Temperature management: 20-25°C during the day before planting, 18-20°C at night, 20-25°C during daytime, 12-15°C at night . 2. After easing the seedlings, the cultivator loosens the soil and promotes root growth. 3, cover the film: the ridge with a distance of 80cm between the lines and between the strains. (B) after the melon management: 1, temperature management: melon period normal management temperature during the day 25-28 °C, night 12-15 °C, before the arrival of severe winter, gradually cooling, especially the night temperature, so that it reached 10-12 °C It is about 23°C during the day. After winter, it is converted into conventional management, with a temperature of 25-28°C during the day and 12-15°C during the night. 2. Moisture management: When the root melon grows to 8-10cm, it starts to be top-dressed once. In normal temperature management, water is poured in 7 days, and water is poured in 12-15 days in winter. 3, fertilization: master a clear water, a fertilizer, each application of urea 10kg/667 m2. 4. Plant adjustment: (1) Hanging vines: Pull a north-south wire to the top of each row and hang the vines by winding the stems together. (2) Leaf-trimming buds: In time, the diseased yellow leaves are removed and the axillary buds are erased. (3) Fallen vines: When the plants grow close to the roof, they are dropped. 5, anti-dropping and fruit drop: (1) artificial pollination: 8 to 9 am before the male flower tear off the corolla, touch the pistil stigma. (2) Applying flowers: Apply pistil stigma or corolla with 2,4-D 25-30 mg/kg. V. Harvesting (1) Timely harvesting in the early stage, root melons growing to about 250g as early as possible, malformed melons and large melons should be picked early. (B) late late harvest, to increase the weight of single melon. Six, pest control (a) locusts: 20% speed killing Ding 2000-3000 times, 2.5% deltamethrin EC 2000-3000 times evenly sprayed. (b) Starscream: 10% Uranus EC 3000 times, 25% extinct Meng wettable powder 1000 times. (3) Viral diseases: In the initial stage of disease, 20% of the virus A WP 500 times or 1.5% of the diseased lingzhi emulsion 1000 times is sprayed once in 7-10 days and sprayed 2-3 times in succession. (4) Powdery mildew: Use 25% of triadimefon 2500 times liquid once every 5-7 days and spray 2-3 times continuously.