I. Variety Introduction JSW09-6 Middle-ripening watermelon hybrids. Flowering to maturity is about 28 days. The fruit is round and the fruit weight is 5-8 kilograms. The green bottom of melons is covered with green black stripe. Pink flesh, crisp and succulent meat, good flavor, no dumping, the center sugar content of 11.1%, the highest 12.8%, near the leather 9.8%, good quality. Low temperature and weak light. Su Mi No. 5 early-maturity hybrids. The whole growing period is about 90 days, with high resistance to wilt disease, more female flowers, easy to set fruit, mature 28 days after flowering. The fruit is oval in shape, light black skin, thin and tough skin, bright red flesh, the center sugar is 12%, edge sugar 9%, single fruit weight 5-7 kg. Second, cultivation points 1. Seeding nursery shed early maturing generally from December to next January with electric hotline nutrition or plug seedlings. Soak seeds before seeding in the sun or in a dry environment for 2 days after germination. Use 50% Carbendazim WP 500 times to soak seeds for 1 hour, or use 300 times of formalin to soak seed for 1.5 hours. net. You can also soak the seeds in warm water and soak the seeds with warm water of 55°C for 20 minutes. Rinse the mucilage with water and let them dry. Place them at 28°C for germination. Seeds are sown when exposed for 2 or 3 days. Keep 30 to 35°C before emergence, do not water; daytime 20 to 25°C and nighttime 15 to 17°C. After emergence, moisture should be added in time according to the bed soil moisture, melon seedlings can grow after 2 to 3 true leaves. 2. Timely colonization depends on different facilities to determine the time of colonization, generally selected sunny morning planting, when the greenhouse minimum temperature is stable above 5 °C, 10 cm deep soil temperature stability above 12 °C is the safe colonization period, colonization density is generally controlled in each 500 to 600 acres. 3. Strengthen the management to promote the early emergence of seedlings, early results, the morning market, in the greenhouse for a small shed, film and other multi-layer covering insulation. The seedling period is maintained at about 30°C during the day, 15°C at night, and the minimum is not less than 10°C. The small arch cover covers multiple layers at night, and is maintained at 12°C or more during the day after the seedlings are slowly regenerated. During the flowering period, higher temperatures are required, which are maintained at 30-32°C during the day and increase the temperature at night. As the outside temperature rises, the cover layer is gradually reduced, which facilitates lighting in the shed. Generally, double- or triple-branched pruning is used. After the opening of female flowers, artificially-assisted pollination is performed under the conditions of low temperature and low light in the early stage. It is advisable to keep the second or three female flowers on the main vine or lateral vine, so that the fruit occupies more leaf area. When the fruit is set for 20 days, the fruit is basically shaped. Every 3 to 5 days, the melon can be picked in sunny afternoons to make the fruit evenly lighted, fully ripened, and timely harvested. 4. Comprehensive prevention and control of greenhouse watermelon high temperature and humidity, prone to blight, anthrax, blight and so on. For agricultural control, the disease-free seeds or seeds were selected for disinfection; crop rotations were used for grafting and disease prevention was strengthened; management was strengthened, organic fertilizers were added, and disease resistance was increased. Increase ventilation to minimize the humidity in the shelter. Timely removal of diseased plants, reduce the source of the disease. Fusarium wilt of watermelon, also known as vine plague, can occur throughout the reproductive period, the early onset of drug control, with 500 to 700 times carbendazim solution, or thiophanate-methyl 1000 times spray or irrigation, every 5 to 7 days spray 1 time, continuous spray 3 to 4 times. In the early stage of the onset of watermelon anthrax, 75% chlorothalonil 800 times solution or 25% carbonate 500 times solution, or 80% anthrax omeprazole WP 800 times solution, spray once every 7 to 10 days, continuous spraying 2~ 3 times. Watermelon blight prevention and control, with 80% mancozeb 700 ~ 800 times spray, spray 7 days, and even spray 2 or 3 times. Insect pests in greenhouses are mainly spider mites, which can be controlled by using 73% Kraft 1500 times. Third, the promotion and application of JSW09-6 for the company's new push a new type of watermelon, the production of a comprehensive performance, can replace the 8424 watermelon planting. Su Mi No. 5 is one of the main varieties of black-skinned watermelon in Jiangsu and its surrounding areas. It can be cultivated in protective or open field, high resistance to wilt disease, and is easy to manage.
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