Tomato planting techniques: how to grow summer tomatoes?

How to grow over-summer tomatoes? Please introduce the planting method of summer tomato can refer to the following methods: 1, variety selection: summer high temperature and rainy, should choose heat-resistant, moisture-resistant, virus-resistant varieties. Through the experiment, the varieties suitable for summer cultivation are Zhongza 9, Lmur402, Lmai 412 and so on. 2 Seedling raising: (1) seedbed preparation: for planting 667m2 tomatoes, the seedbed area 22m2 is required (calculated according to no or sub-seeding bed). The ratio of fertilizer to soil in seedling bed is 3:7 or 4:6. In order to prevent diseases and insect pests, 8g/ m2 such as 50% carbendazim, 70% methyl thiophanate or dimethazone can be used for soil disinfection, and 50% phoxim or 20% methyl isophos mixed bean cakes can be sprinkled into the seedbed to control underground pests. (2) seed treatment: the seeds were soaked in 55 ℃ warm water for 20 minutes, and stirred continuously. When the water temperature dropped to 30 ℃, the seeds were soaked for 6 hours for 8 hours. In order to control tomato quenching disease, early blight and other diseases, soak the seeds with 40% formaldehyde or 1% potassium permanganate for 15 minutes for 20 minutes, then rinse them with clean water, accelerate germination under the condition of 30 ℃, and sow seeds when the seeds are white. (3) sowing: 50g of tomato seeds are commonly used to plant 667 m2 tomatoes. The best sowing is in the middle and late May. Pour water through the seedling bed before sowing, wait for the soil to be loose before sowing the seeds. After sowing, cover the soil with 1~1.5cm, cuddle flat, build a sunshade net on the seedling bed or cover weeds. After emergence, weeding, interseedling, row spacing of seedlings 10cm × 10cm, and timely control of aphids to prevent the occurrence of virus diseases. The standard of strong seedling is: the stem is thick, the Internode is short, there are 6 to 8 true leaves, the seedling Artemisia 15cm is about, the leaf is hypertrophy, the leaf color is dark green, begins to show buds, and there are more fibrous roots. The seedling age is 35-40 days (days). (3) planting: fertilizing and preparing the soil before planting. Generally, high quality ring fertilizer 5000kg, superphosphate 50kg, urea 15kg and potassium sulfate 20kg were applied per 667m2. Turn deeply and rake flat. It can be planted with single ridge and single row or single ridge and double row. The row spacing of single row planting was 60 × 35cm, and the large row spacing of double row planting was 70cm. The small row spacing is 45cm, generally planting 3000000 trees per 667m2. 4 Management after planting: (1) ploughing, fertilizing and watering: ploughing for 2 or 3 times at the right time after planting. When the young fruit was enlarged, it was irrigated at the right time, and urea 15kg was applied every 667m2. In late July, in order to prevent premature senescence, diammonium phosphate 25kg and potassium sulfate 15kg were topdressing every 667m2 during the middle ear fruit expansion stage. After the Beginning of Autumn, tomato entered the second stage of production peak. In order to ensure the late yield, urea 10kg, diammonium phosphate 20kg and potassium sulfate 15kg were applied every 667m2. (2) pruning: single dry pruning, leaving about 7 ears per plant. There were 2 to 3 fruits per panicle from the second to the fourth ear, and 3 to 4 fruits per panicle after the fifth ear. Wipe off lateral buds and thinning flowers and fruits at the right time. Spot the flower with high yield agent No. 2 and fix it with a bamboo pole more than 1.5m long. (3) Prevention and control of diseases and insect pests: the main diseases are early blight, leaf mold, gray mold, ulcer and so on. At the initial stage of the disease, Bordeaux solution of 1RU 2RU 200 can be used for prevention and treatment; in the later stage, 64% Zhaoduo 500 times solution, 70% methyl thiophanate 800 times solution, 75% chlorothalonil 600 times solution or 50% Shu Ke Ling 1000 times solution can be used for spray control. Insect pests are mainly cotton bollworm, cabbage worm, aphids, Liriomyza huidobrensis and so on, which can harm leaves and fruits, and can be controlled with 2000 times of Laifulin EC or 20% methamphetamine. Liriomyza huidobrensis can be controlled with 1000-1500 times of 40% green vegetable treasure EC or 2000 times of 1.5% hyperosmotic imidacloprid EC. 5. Timely harvest: when the early fruit sees the red line, it is harvested and put in a cool place for sale; in the later stage, when pulling seedlings, the green ginkgo fruit is put in the place of 10-15 ℃ to accelerate ripening. The general 667m2 yield of over-summer tomato is about 7500kg, and the income is 3000-5000 yuan. Click to get more tomato planting techniques click to get more vegetable planting techniques