The early-maturing species of summer squash, such as black crow and yellow coral, are selected from the garden soil: river sand = 3:1 (volume ratio) substrate for seedling cultivation, and the greenhouse is cultivated in winter and spring, which can not only solve the problem that the summer squash is cultivated in Hainan winter and spring. Diseases and powdery mildew, melons are prone to premature aging and death, resulting in problems of reduced yield and low quality, and their low input, quick effect, high yield, can significantly improve their economic benefits. The zucchini is warm and warm, not resistant to cold and high temperature. The cultivation management requires fertile soil, deep soil layer, good ventilation and light transmission, and sufficient fertilizer. 1 seedling At present, there are many varieties of zucchini, and early-maturing varieties introduced from the Netherlands, such as black crows and yellow corals, can be used for seedling cultivation. 1.1 Seedling container and matrix preparation Seedlings are usually sown in the 54th or 70th hole tray from late November to early December. The seedling substrate was prepared with garden soil: river sand = 3:1 (volume ratio). 1.2 matrix and plug disinfection The substrate was poured through a mixture of 50% carbendazim 500 times + 50% dichlorvos 1000 times, and the cover film was closed for 24 hours, and then placed and placed. The germination tray and gauze were sterilized by high temperature at about 70 °C for 15 minutes. 1.3 seed soaking and germination Soak in warm water at about 55 °C until natural cooling, then soak for 3.5h → wash with water and dry slightly → 30 °C or so on the incubator → seed white (2-3 roots) can be sown. 1.4 sowing Before sowing, apply water to pour the hole matrix, then gently press the 1.5cm deep hole, lightly put one of the exposed white seeds, and cover the substrate, do not crush the radicle (one hole and one seed), broadcast After that, rinse through the water. 1.5 seedling management The seedlings are kept dry and dry, and after the emergence of the seedlings, 72.2% of the Plex (Powder's) water agent 800 times + 5% acetamiprid WP 1500 times mixture is used to prevent rickets and white meal. The 1500 times solution of Norwegian compound fertilizer (15-15-15) is poured once every 3 days to promote the seedlings to be strong. 2 Site preparation Deep ploughing 30cm, smashing and leveling, according to ridge width 60cm, groove width 40cm, ridge height 25cm initial ridge. Then open a 20cm wide fertilization ditch from the middle of the ridge, 667m2 high-quality decomposed pig manure 3000kg, Norwegian compound fertilizer (15-15-15) 25kg, potassium sulfate 25kg, superphosphate 50kg, respectively, into the ditch, mix and cover The soil is made into a turtle shape. 2 days before transplanting, 50% diclosan WP 500 times + 45% phoxim emulsifiable concentrate 800 times mixed solution was used for disinfection. It can be transplanted about 10 days after the emergence of the seedlings. One day before transplantation, the Norwegian compound fertilizer (15-15-15) 1000 times + 50% carbendazim WP 1000 times mixture was poured, so that the fertilizer and the medicine were put down. The black raven zucchini is 60cm100cm, and the yellow coral zucchini is 80cm100cm. It is advisable to use a single row of colonization. Root water is poured in time after planting to ensure full seedlings. 3 shed field management 3.1 Temperature Management Winter and spring cultivation outside the temperature is low, cold insulation, maintain a moderate temperature to facilitate seedling growth. The whole growth and development period of zucchini should be as high as 28-32 °C during the day and 18-22 °C during the night. The seedling period can be properly shaded, and the skylight and side windows can be closed at night to facilitate seedling growth. After the seedlings grow normally, they are no longer shaded. At night, the skylights can be closed but the side windows are opened slightly. Later, as the seedlings continue to grow, the side windows are opened from small to large to prevent the humidity in the shed from becoming too large and causing disease. 3.2 Fertilizer management After 7 days and 15 days after planting, cultivating loose soil can be carried out, and the medium tillage should be shallow to deep, and the soil should be properly cultivated. 3 days after planting, each plant was sprayed once a month with Norwegian compound fertilizer (15-15-15) 1000 times solution 1000mL; 15 days, 20 days, 25 days after planting, each plant was sprayed once Norway Compound fertilizer (15-15-15) 500 times liquid 1500mL, and so on, every 15 days or so, each plant is poured once a month of Norwegian compound fertilizer 300 times liquid (15-15-15) 1500mL. After the root melon is stabilized, 10 g of Norwegian compound fertilizer (15-15-15) is applied to each well, and once every 7 days, the fertilization point should be 20-25 cm away from the root of the plant, about 2 cm away from the dripper drip point, in the plant two The side wheel is replaced by fertilizer, which is beneficial to the dissolution and absorption of the fertilizer, enhances the regeneration ability of the root system, and promotes the balanced growth of the root system. Using a micropipette to drip, the amount of water per planting period (up to 25 days after planting) is 500-800mL/plant; the flowering result period (25 days after planting to the end of harvesting) is 800- 1000 mL / strain. Seedling period 2 times a day, 7:00-8:001 times, 15:00-16:001 times; flowering result period 3 times a day, 7:00-8:001 times, 13:00-14:001 times , 16:00-17:001 times. The specific conditions should be flexibly applied depending on the growth conditions of the plants, temperature changes, soil moisture content in the field, etc., but the bottom of the furrow should be slightly moistened without accumulation of water. 3.3 Flowering period management Zucchini belongs to the monoecious plant, which requires artificial pollination. It can be carried out from 7:00 to 10:00 on sunny days and from 8:00 to 11:00 on rainy days. When a male flower has more female flowers, a male flower can give a female flower. Conversely, a male flower can give 2-3 female flowers. Excess male flowers should be removed to avoid consuming plant nutrients and causing gray mold. In addition, on the third day after the pollination of the female flower, the pistil and petals are removed in time to prevent the rotten melon. Seedlings in time, divided into 2 times. The first time is 13 days after transplantation, the water can be properly controlled for 2 days, the amount of dripping is 500mL/day. When the sun is strong at noon, the leaves of the plant are slightly mildly wilting; the second time is the first 2 days after the opening of the female flower of the root melon. It can be properly controlled for 2 days, the specific dripping amount is 800mL/day. When the sun is strong at noon, the leaves of the plant are slightly mildly wilting, and the seedlings must not be too strong, causing leaf burns. For robust plants, root melons can be retained. Otherwise, it should be removed. Remove old leaves and yellow leaves in time, but not remove too much at one time, generally 1-2 leaves, which is beneficial to prevent excessive nutrient consumption, adjust its own uniformity and improve the ability of anti-wound infection. If artificial pollination is feasible, you should not use chemical agents to promote fruit set, otherwise it will easily cause premature aging of plants, greatly reducing yield and quality. 3.4 timely harvest Generally, it can be harvested 5-7 days after pollination, and the tender melon reaches 0.2-0.3kg for harvesting. If it is too large or too small, it will lose its commercial value. In order to ensure the rate of tender melon, the harvest is 2 times a day, 1 time from 9:00-11:00, and 1 time from 16:00-18:00. It should be harvested with a sharp knife. When harvesting, leave a 0.8-1cm fruit handle. Do not scrape the plant to avoid wound infection. Take care to gently touch and avoid scratching the peel. 3.5 pest control At present, the diseases of zucchini in Hainan are mainly downy mildew, powdery mildew, blight and virus diseases; insect pests include whitefly and aphids. Downy mildew and disease can be controlled by 69% Anke (enoylmorpholine) wettable powder 800-1000 times solution or 72.2% Plex water agent 500-600 times solution; powdery mildew with 50% sulfur suspension agent 300 times +12.5 Control of the mixture of myclobutanil 1000 times mixture; whitefly and aphid were controlled with 2.5% green pass (imidacloprid) emulsifiable concentrate 800 times solution or 3% golden century (acetamid) WP 1000 times solution. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Hydrocolloid Applicator,Hydrocolloid Dressing,Hydrocolloid Band Aid,Hydrocolloid Gel Patches Henan Maidingkang Medical Technology Co.,Ltd , https://www.mdkmedical.com