How to cultivate plastic greenhouse thin skin melon
The cultivation of thin-leaved melons in plastic greenhouses can be marketed one month earlier. The yield per mu can reach 3,500 kg, and the social and economic benefits are very significant. Now the main cultivation techniques are described as follows: First, choose early-maturing varieties of sweet melons, like hi light, in order to achieve early maturation and high yield, must choose early maturation, high yield, disease resistance, low temperature resistance, low light resistance varieties, such as sapphire, Hongcheng 5, etc. Variety. Second, nurturing strong seedlings 1. Nutrition soil preparation. Nursery should be carried out in a high-drying, well-lit sunlight greenhouse. The disease-free vegetable garden soil that had not been used to grow melons before was used as a nutrient soil. The nutrient soil used is calculated by volume and is preferably prepared from 2 sieved fine soils plus 1 sieved and decomposed horse dung, and 1 kg of superphosphate or 0.5 kg of ternary compound fertilizer is added to each cubic meter of nutrient soil. , manure, fertilizer mixed evenly. After filling soil with a nutrition bag with a diameter of 8 cm and a height of 10 cm, it is neatly and tightly placed in the seedbed. 2. Seed treatment. Soak the seed with warm water of 55°C to 60°C for 15 minutes to kill the germs on the seed surface. The seeds were soaked in water at room temperature (20°C) for 2 to 3 hours, and the surface of the seeds was wiped off with a dry towel. The soaked seed is wrapped in a wet towel, and the plastic bag is wrapped and placed in a constant temperature of 28° C. to 30° C. After 20 hours, budding is possible. 3. Sow. Before seeding, the seedbed was poured into the bottom water, and after the water was soaked, the budding seeds were laid flat in a nutrition bag and covered with 1.5 to 2 cm of moist fine soil. After seeding, the seedbed is covered with a plastic film to keep the moisture in the seedbed. 4, seedbed management. Seedling temperature maintained above 25°C during the day before emergence and 15°C～18°C during the night. Immediately after emergence, the film was peeled off, and the temperature of the seedbed was appropriately lowered. The temperature was kept between 22° C. and 25° C. during the day and 12° C.-15° C. during the night in order to promote root growth of the muskmelon and prevent the formation of “high-legged seedlingsâ€. After the two leaves of the melon seedlings are flattened, the first true leaf can be appropriately increased in temperature when it appears. 7 to 10 days before planting began to reduce air temperature, low-temperature hardening seedlings to cultivate strong seedlings. When the melon seedlings grow to 3 to 4 true leaves, the main vine growth point is removed and two strong vine vines are selected. Third, the timely cultivation of greenhouse cultivation melon density, need more fertilizer, must apply enough base fertilizer. In general, more than 5,000 kilograms of farmyard manure is applied per acre, combined with a deep turn of 40 centimeters, plus 50 kilograms of compound fertilizer and 20 kilograms of potassium sulfate. Colonization began at the beginning of April, 15 to 20 days before planting, and the soil was tampered with. The ground was raised to raise the ground temperature, and a small arch shed was erected after planting to promote seedling easing. Deep ditch high ridge, ridge width 60 cm, ditch depth 33 cm, perforation by planting 60 cm hole colonization, planting 1860 per acre. Fourth, field management 1. Temperature regulation. Pre-planting heat preservation slowing seedlings, the temperature control during the day at 28 °C. After easing the seedlings, the small arch sheds were uncovered at night and covered with straw quilts or paper quilts and quilts for freezing and heat preservation in the cold weather or cold wave. Grasshoppers should be uncovered in a timely manner. Under conditions of maintaining suitable temperatures, they should try to uncover and release the cover early to prolong the duration of the illumination. The sky should be ventilated on both sides of the greenhouse in sunny days. Single-headed wind-proofing and ventilation during cloudy days, cloudy days, and small days of nocturnal rain and snow. . The proper temperature management is performed in the shed and the temperature is controlled at 24°C to 30°C during the day. 10 to 15 days before fruit ripening, increase ventilation in greenhouses, increase temperature difference between day and night in greenhouses, in order to improve the quality of melons, sunny evenings do not close the ventilation hole. 2, fertilizer and water management. When planting, the seedlings should be poured with water and the seedlings should not be watered before flowering. Too many water-retaining components make the plants long and cause fruit drop and fruit drop. After fruiting, when the melon grows to the size of the egg, you can chase the fertilizer once, and water it immediately after dressing. Each acre topdressing 20 kg ternary compound fertilizer, 10 ~ 15 kg urea, 10 kg of potassium sulfate or 800 ~ 1000 kg of diluted manure. Watering was stopped 7 to 10 days before harvest to increase the melon sugar content. 3. Plant adjustments. Using double vine pruning, after the main vine has picked its heart, it chooses to leave two sturdy vines, and then removes Sun Man before the leaves of the vines and leaves, and leaves the leaves of the leaves at the leaves of the leaves of the leaves. Picking up the heart, after the fruiting node, 6~8 leaf toppings are planted, and the non-fruited vines are removed early. 4. Hang vine, hanging melon. After the vine spreads, the end of the tear film is tied to the top of the greenhouse. One end is tied to a bamboo stick and inserted in the ridge to wrap the melon vines around the film line to make it climb and spread the vine spread evenly in the shed. When the melon grows to the size of an egg, one end of the film line is tied to the guati, and one end is tied to the roof of the shed, so that the guava vine and the vine are vertically arranged. 5. Promote sitting melon. Greenhouse cultivation melon must be artificial pollination in order to ensure fruit set. Male flowers opened on the same day were used to pollinate the female flowers, and the pollen was gently applied to the female stigma. The pollination work should be completed between 8 and 10 am. It is too late. The stigma is less pollen-receptive and it is not easy to set fruit. 6. Pest control. The diseases of greenhouse melons are mainly seedling damping-off, anthrax, downy mildew and powdery mildew. The use of 0.05% potassium permanganate and 1000-fold prill to irrigate seedbeds can effectively control damping-off. Spraying on seedbeds or plants with Ledomil's wettable powder can control the occurrence and spread of anthrax, downy mildew and powdery mildew. Insect pests mainly include aphids and cabbage caterpillars, which can be used once and for all.