The tomatoes in summer result in autumn, so they are also called autumn tomatoes. The market period is from August to September. Tomato is a thermophilic crop. In general cultivation conditions, the optimum temperature for photosynthesis is 20-25°C. A low temperature of 15°C or higher than 30°C would affect normal flowering and pollination, and continued high temperatures during the day and night. Air humidity below 40% or above 60% would lead to poor growth and development of tomato plants, prone to disease, and decreased yield and quality.

First, choose good varieties of heat and disease resistance in the late-maturing varieties, pure varieties, no mildew or no insects, germination rate, germination potential of more than 90% of high-quality seeds. When the nursery management is normal, the amount of seed used per acre of production field is 20-50 grams.

2. Seed disinfection before sowing seedlings. Seeds are soaked in warm water of 55°C for 10 minutes, then soaked in 10% trisodium phosphate solution for 20 minutes. Rinse and rinse with clean water. It can be sown with green hen 1 seed dressing. When the seedlings grow 1-2 leaves of true leaves, they spray 100 mg of glucocorticolide. 2 true leaves time seedlings, weak to stay strong. 3-4 true leaves when the seedlings, row spacing 8 cm 5 cm. Split seedlings are inserted into arched bamboo sheets and covered with plastic film on rainy days to prevent rain and thin seedlings. Spraying thiophanate-methyl, carbendazim, anti-virus drugs and Other 2-3 times at seedling stage to prevent disease. When the seedlings grow 5-6 true leaves, they can be planted in Daejeon.

Third, the seedbed preparation choice 2-3 years have not planted Solanaceae crops, irrigation and drainage is convenient, fertile, loose, flat garden nursery bed, deep smashed after the car. Box width 0.9-1 meters, box height 0.2-0.3 meters. For each 1 mu of tomato planted, 20-25 square meters of seedbed is required.

Fourth, base fertilizer and planting tomatoes are hi-fertilizer crops. According to the calculation of nitrogen, phosphorus and potassium required for producing 5,000 kilograms of fruit per acre, the base fertilizer should be applied to manure-based organic fertilizers of more than 3,000 kg and ternary compound fertilizer 25 per mu. - 50 kg, 50 kg of superphosphate and 10-15 kg of potassium sulfate. The fertilization method can be used between deep-line or hole-application. When a large amount of organic fertilizer is applied, a 13-17 cm deep groove can be opened in the middle of the car. After spreading fertiliser, organic manure is added to cover the soil. If the organic fertilizer is small and refined, it is appropriate. Using acupuncture, that is, press one box and two rows and the distance between the holes is 0.4 meters. Use a spade to dig a 13-17 cm deep fertilization point. Sprinkle the chemical fertilizer first, then apply organic fertilizer [], and apply organic fertilizer when planting. After properly mixing with the soil, the seedlings are planted next to the hole. Advocate the use of "full-layer fertilization", that is, a large number of organic fertilizer, the right amount of superphosphate and potassium sulfate evenly spread in the field, and then use the rotary plough to fine soil more than 30 cm.

Autumn tomato colonization is in the high-temperature and dry season. Rainy or sunny evenings should be selected. When transplanting seedlings, the roots should be minimized. Planting density is generally 0.6-0.7 meters spacing, spacing 0.4 meters. Root water was set after planting and was used to cover the surface of the plant, but it should be 10-13 cm from the plant.

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