Delayed tomato in autumn refers to planting seedlings in summer, planting in early September, and planting this tomato in protective cultivation in Yangshuo, greenhouse or greenhouse in early October. Delayed cultivation of tomato autumn is generally harvested from mid-November to early December. After a period of storage, the supply of the market on New Year's Day or Spring Festival can achieve higher economic benefits. Late cultivation of tomato in the autumn, the early stage of high temperature is low, the plants grow weak, susceptible to virus disease. To cultivate a good tomato for autumn delays, we must do the following:
First, choose the appropriate variety
Should choose to adapt to strong, disease-resistant, high-yield dwarf varieties, such as Lufen 2, early Feng, Xifen 3, Tianjin powder 65 and so on.
Second, nurture good quality seedlings
The appropriate sowing date is very important for the late autumn cultivation of tomato, and the suitable sowing date is from the end of July to the beginning of August. 3-4 days before sowing, soaking with 10% trisodium phosphate for 20 minutes, washing the disinfectant with water, soaking in warm water at 30°C for 3 hours, setting germination at room temperature, seeding after sowing The bamboo poles around the poles are used as cool scaffolds. They are usually covered in sunny days from 10 am to 3 pm. After the emergence of seedlings and time, and pay attention to the prevention of aphids. Two to three true leaves of tomato pods were seedlings with seedlings 12-13 cm apart. During the period of easing seedlings, take a shade shed before and after noon. 4-5 days before planting, cut into pieces and place plants with soil.
Third, colonization
The colonization period is from late August to early September. A few days before planting, sufficient base fertilizer was applied to make a 1.5-meter-wide lotus root. Each row was planted with 4 rows of 30-cm spacing and watered after planting.
Fourth, cultivator, top dressing, irrigation
After the delayed tomato planting in the autumn, the cultivator should be scratched. Seedlings 7-8 leaves when pouring a large water, and then cultivating seedlings. After the first fruit is seated, the top dressing is started, and 20 kg of nitrogen, phosphorus, and potassium compound fertilizer is applied per mu, and then water is poured to promote fruit enlargement. After each spike and fruit, it is combined with water to chase 1 time of fertilizer, each time using 15-20 kg of urea or 30-40 kg of ammonium sulfate or 15-20 kg of diammonium phosphate.
Five, scaffolding, flowers and fruits
Autumn delay tomato more than a single stalk pruning method, in addition to the main culm, the occurrence of all the lateral branches of all leafhoppers removed as soon as possible, leaving 4-5 fruit per panicle, the excess flowers and all removed. Hang the vines with plastic ropes in the shed. After mid-September, the nighttime temperature is low, which is not conducive to tomato pollination and fertilization. During flowering and setting fruit period, when 2-4 flowers per spike, 15-20ppm of 2,4-D can be used for flowering, or 30-40ppm of tomato canopies can be used, which will help increase fruit setting rate.
6. Topping, thinning, thinning
When the remaining branch reaches a certain number of spikes and leaves, the top spot is removed. The topping should leave 2-3 leaves on the inflorescence, which will not only help fruit growth, but also prevent the fruit from being exposed to sunlight and causing sunburn. Autumn cherry fruit thinning and fruit thinning can ensure that the plant has a certain number of results, reducing the number of results caused by excessive nutrients, speeding up fruit hypertrophy, increase the weight of a single fruit, improve the uniformity of the fruit, improve quality, improve product quality. The number of fruit per plant in tomato should be 3-4 fruits per panicle for large fruit varieties, 4-5 fruits for medium fruit varieties, and 5 or more for small fruit varieties. Tomato cultivation in the flowering period should be sparse excess buds and deformed flowers, set fruit should be removed after the irregular fruit shape, shape is not standard and the development of the same fruit too late.
VII. Covering the cold
Falling temperatures in autumn should be covered in time to maintain proper temperatures. From late September to early October, the walls of the northern, eastern, and western sides of the Tomatoes will be used to make a Yangshuo box. From the end of September to the beginning of October, the tomatoes were covered with plastic film at night and uncovered during the day. After the frost falls, cover the plastic film during the day and cover the grasshoppers at night. The tomato, which is used for late autumn cultivation in plastic greenhouses or greenhouses, can be planted directly in the shed, and it can be tarred in the middle or late October.
Eight, harvest
After the tomato turns red, it should be harvested in time to facilitate the normal growth and development of other fruits on the plant. Fruits that have turned red during harvest can be stored at a low temperature of 2-5°C for 15-20 days before being marketed. In early December, the weather is cold and all the fruits should be harvested and packaged for storage. The storage temperature should not be lower than 8°C.
planting bag grow
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