Soilless cultivation of tomato tree
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2 Variety selection First, select good varieties. The main characteristics of the varieties used in tree-shaped tomatoes are strong vitality and strong resistance. In the South, especially in South China, the humidity is high and the temperature is high. The common tomato varieties are soilless and easy to rot, which leads to invasion of pathogens and causes harm. The tomato variety suitable for tree-shaped soilless cultivation in the south is Kyodan No. 6 and so on.
3 Most nursery areas in the south are raised in the middle of August. The tomato seeds are soaked and germinated in conventional ways, sowed in the tray, one for each hole. The nursery soil is preferably a professional nursery substrate, fine and soft, and the post-emergence management is the same as that of ordinary tomatoes. When the seedling height is about 20 cm, it can be transplanted into a nursery pot with a diameter of 10-15 cm. When the seedling height is 40-60 cm, it can be planted in a planting pond.
4 Management after planting and planting After planting the seedlings on the roots of tomato seedlings, they are planted in the planting tanks of greenhouses or greenhouses, and their trunks can be fixed with bamboo or ropes.
1 Water Supply After the fertilization, provide water and drip irrigation for 1-3 days. After 3 days of colonization, available for nutrient solution (fertilizer), the time required for fertilizer application depends on the local climate. Generally, 30 minutes of fertilizer is applied every 2 hours during the early period of plant growth. With the continuous growth of tomato plants, the time for fertilizer application increases accordingly. The interval time is shortened accordingly.
2 Nutrient solution concentration Due to the use of soilless planting, nutrient solution is the main nutrient source for tomato growth and can not be ignored. It is generally required that the nutrient solution has a ph value of 6.4-7.5, and the electrical conductivity increases with plant growth (from the seedling stage to the result stage) at 0.6. -Increase within the -3.2 range. The formula for the nutrient solution can be formulated with the general tomato and then combined with the local water quality.
3 Pruning The growth of tree-shaped tomatoes is very large. Correct pruning can promote the rapid growth and nutrition of tomatoes, increase the yield, and increase their ornamental value. In the early period, the main trunk was mainly cultured, leaving 3-4 branches. The rest were removed and artificially cultivated. The branches were longitudinally and horizontally evenly distributed. The spikes that appeared at this time should be removed until the leaves were more luxuriant, covering an area of ​​3-4. In square meters, you can leave flowers and fruits, and then remove the excess branches to avoid mutual shade. The result of the ear was hung down to form a beautiful frame shape.
4 Pest control The prevention and control of pests and diseases in tree-shaped tomatoes should be based on prevention. In particular, measures should be taken to strengthen the disease prevention of the root system. Regularly use carbendazim, root rot, etc. to irrigate the roots; 70% thiophanate-methyl WP, chlorothalonil, etc. are used on the aerial parts, and spray regularly at a concentration of 800-1000 times. disease. Tomato plants in greenhouse cultivation are less pests, according to the time of the occurrence of different insecticide spraying pesticides, combined with avermectin EC 3000 times, you can achieve the purpose of pest prevention. In the sunny days, a small amount of carbendazim is applied to the wounds of the pruned branches to prevent the wounds from being infected. The entire planting environment is sprayed with disinfectants such as Ansol for 10-15 days, and the environment is kept airy and transparent to reduce the chances of invasion of pests and diseases. The plants should be removed in time.
5 Harvesting is from November to May next year. For the purpose of viewing, it can be harvested in time to extend the fruiting period of the tree-shaped tomatoes and increase the viewing effect. For production purposes, timely harvesting should be conducted to ensure quality.