Introduction of tomato varieties in Provence

Provence is a tomato variety with red meat and red fruit introduced by Dutch Deao Special Industry Group. Infinite growth type, vigorous plant growth, not premature aging, high yield, thick sepals, beautiful fruit shape, good color, large fruit shape, average single fruit weight of 200-300 grams. Tomatoes in Provence are sand but not noodles, solid but not empty, sweet but not sticky, and are known as the king of fruit tomatoes. Tomatoes in Provence are highly resistant to root-knot nematodes, Fusarium wilt, Verticillium Wilt and tomato spot wilt virus, and are suitable for greenhouse cultivation in early spring and warm winter, crops in autumn and long winter, or greenhouse cultivation in early spring and summer. Planting time and market prospect ① Seedling raising time is in the first half of September; ② The planting time is in the middle and late June of 10; (3) Harvest begins in the middle and late October of the following year 10, and the yield per mu is about 7000- 10000kg. Seedling raising ① Selecting seeds to cultivate high-quality vegetable seedlings with high purity, high germination rate and strong growth potential. Provence. Seed treatment: soak the seeds in warm water at 60℃ 1-2 minutes and keep stirring, then cool the water to 30℃ and soak for 6-8 hours. ② Promote the germination of germinated seeds in the germination box. Tomatoes germinate at 25 degrees Celsius for 36-48 hours, and the seeds are washed every 6-8 hours. When about 80% seeds germinate and sow, if the germination time is too long, the seedlings will grow in vain. During germination, check the degree of seed germination every day. Use a 50-hole tray. Seedling management ① Before eclosion, the temperature is 20-28 degrees Celsius, after 80% eclosion, it drops to 20-23 degrees Celsius, and the night temperature is 13- 15 degrees Celsius. ② Water management In order to keep the substrate dry and wet, spray water from 6: 00 to 7: 00 every morning, and replenish water when it is partially dry in the afternoon. Water should be properly controlled in rainy days. (3) When the uneven growth of seedlings in strips is found by adjusting the position of plug, the position of plug should be adjusted in time to promote the even growth of seedlings. ④ The main diseases at seedling stage are damping off, damping-off and downy mildew. Formula: 72% thorn 20g plus Bihu 3g plus Biot 20g plus water 15kg spray. ⑤ At the standard emergence, the seedlings should be robust, with normal leaf color, well-developed root system and no pests and diseases, and have the characteristics of this variety, with the number of leaves above 8- 10. Colonization (1) digs deep into the soil. After the greenhouse is harvested in summer, it should be turned over early and deep in time, and be prepared for high temperature exposure-death, insect pests and loosening the soil. Deep ploughing should be more than 40 cm, and the ploughing time should not be later than 20 days before planting. Reasonable rotation: rotation with Leguminosae and Cucurbitaceae for more than 2 years. ② Apply 3000 kg of farm manure or 40 kg of two plus one organic fertilizer and 100 kg of high phosphorus and high potassium compound fertilizer per mu, plus 2 kg of free deep ploughing and 300 g of large grain boron and zinc. (3) Before planting, cover with plastic film. Choosing mirror-like flower po film can increase the temperature, reduce the humidity, increase the ventilation and light transmission time during the day, and play a good role in disease prevention and control. (4) Ridge planting is combined with soil moisture, and it is generally appropriate to ridge without sticking hands. When the distance between two ridges is 1 m, the ditch width is 0.3 m, the ditch depth is 0. 15 m, and 2800 plants are planted per mu. ⑤ Listen to the weather forecast before reasonably irrigating the land, and then water it at least on sunny or cloudy days. The watering time is before 10:30 in the morning. Post-colonial management 1, management before and during winter. ① Cover the seedlings with plastic film before and after slow growth. The greenhouse temperature is 28-30℃ during the day and 17-20℃ at night, and the ground temperature is not lower than 20℃, which promotes the slow growth of seedlings. After delaying the emergence of seedlings, the greenhouse temperature was appropriately reduced to 22-26℃ during the day and to 12- 15℃ at night. You can use 3 grams of Bihu and 20 grams of Biospray 1-2 times to prevent plants from growing vigorously. Go it alone and trim it in time, wipe the branches and tie the seedlings. ② Before and after the first inflorescence set fruit. In order to prevent falling flowers and fruits caused by low temperature, 30×1100000 anti-falling agent can be used to spray flowers. After fruit setting, flowers and fruits should be properly thinned, and 3-4 fruits should be left per ear. When the fruit of the first inflorescence is as big as walnut, watering under the middle film of the high border and applying fruit swelling fertilizer can increase the photosynthetic rate of the plant and balance the vegetative growth and reproductive growth. Spraying Red Bull Nutrition King 10 kg (humic acid, chelating medium and trace elements) every 15~20 days to promote fruit growth. When the fruit enters the vigorous growth period, it is necessary to apply high potassium fertilizer (N: P: K: 7-8-35), and each application of 10- 15 kg can promote the rapid expansion, healthy growth and early maturity of the fruit. ③ Temperature management after topdressing. After watering, raise the indoor temperature, ventilate when it reaches 33℃ in the morning, close the vent at 25℃ in the afternoon, and control it at around 12℃ in the morning; The next day, ventilation began at 365438 0℃; On the third day, it was transferred to normal management, watered thoroughly as far as possible, and watered during the winter. (4) Temperature and lighting management. Uncover the straw cover in time to extend the illumination time as much as possible; In cloudy and snowy weather, the cover should also be opened to allow plants to receive scattered light. The temperature in the shed is 20-30℃ during the day and 13- 15℃ at night, and the minimum temperature at night is not lower than 8℃. On sunny days, when the temperature reaches 30℃ at noon, the skylight can be used for ventilation. ⑤ In winter, carbon dioxide fertilization leads to low greenhouse temperature and low ventilation. If organic fertilizer is not applied enough in the greenhouse, carbon dioxide will not be enough. Therefore, carbon dioxide fertilization can be carried out at 9- 1 1 on sunny days, and the suitable concentration is (600-800) ×11000000. ⑥ Fruits should be harvested in time according to market demand after the discoloration period. 2. Management after overwintering (1) For temperature and light management after mid-February, as the sunshine hours gradually increase, the grass cover should be uncovered early and covered late, so as to prolong the light-seeing time of plants as much as possible. Pay attention to cleaning the film on the shed surface and increase the light. Pay attention to timely ventilation. On sunny days, the greenhouse temperature is 25-28℃ in the morning, 25-20℃ in the afternoon, 15-20℃ in the middle of the night and 13- 15℃ in the middle of the night. On rainy days, the greenhouse temperature is 25-20℃ during the day and 10- 15℃ at night. ② Fertilizer and water management From mid-February to mid-March, 10 kg fruit swelling fertilizer can be applied every 667m2, which can improve the photosynthetic rate of plants and balance the vegetative growth and reproductive growth. Spraying 10 kg B red bull nutrition king (humic acid, chelating medium and trace elements) after 7~ 10 days (days) promoted fruit growth. When the fruit enters the vigorous growth period, it is necessary to apply high potassium fertilizer (N: P: K: 7-8-35), and each application of 10- 15 kg can promote the rapid expansion, healthy growth and early maturity of the fruit. Or NPK compound fertilizer 15 kg. Watering for 5-8 days after mid-March, applying 15-20kg diammonium phosphate, applying fertilizer 2 and fertilizer 1 3kg each. (The above fertilizers are used alternately) ③ Timely pruning, leveling, hanging seedlings and tying vines to prevent lodging, timely removing old leaves, yellow leaves and diseased leaves, and improving ventilation and light transmission conditions. Generally, the seedlings are pulled out from late May to early June. (4) Pest control: regularly spray pesticides such as prochloraz, Antaisheng, chlorothalonil and mancozeb to control leaf mold, gray mold, early blight and late blight, and timely spray pesticides to control pests and diseases. Biot20g, potassium dihydrogen phosphate (0.2%) or other foliar fertilizers can be added as appropriate. Spraying pesticides for 5 days before harvesting. Prevention and control of main tomato diseases and insect pests: spraying 50 grams of 65% Kedeling with 45 kilograms of water per mu, 2-3 times every 7- 10 days, which is more serious; Use 48g Kaiser and 12g Huiyou per mu, and spray 60kg water every 4 days for 2-3 times in a row; Late blight: spray 75g of Antaisheng to 45kg of water for 2-3 times every 7- 10 days; It is more serious; Spray 45kg water with Kate 75g, 2-3 times every 4 days. Viral diseases: every 7- 10 days, 45 ml of ningnanmycin, 9g of Bihu and15 g of 75% suspended zinc were sprayed with 45 kg of water. Whitefly: Stop spraying 60g and 45kg water every 6 days. The combined application of disease prevention chemicals and foliar fertilizer saves labor and effort, prevents diseases and increases production. Note: If the above formula can be mixed with pests and diseases, it is recommended to mix with other pesticides. _