Minimize the temperature in the booth
In summer, the outside temperature is very high, not to mention the temperature inside the shed, certainly above 40°C. At this time, on the basis of enhanced ventilation, measures such as shading and spraying should be taken to reduce the temperature in the shed.
Some farmers have installed sprinkler systems in the sheds. There is a sprinkler at about 5 meters in the center of the shed. The baffle on the sprinkler is not only oscillated by the impact of water, it can spray every position in the shed. Water, this way of spraying leaves is very effective for cooling the greenhouse. If the cost of installing this kind of professional irrigation facilities is high, vegetable growers can also install the micro-irrigation facilities for watering in winter. However, it is necessary to ensure that the small holes face upward, and the water flow is ejected outwards, which can also play a good cooling effect.
Pruning leaves to be reasonable
In order to reduce the temperature in the hot season, shading nets are indispensable, but the use of shading nets can also easily lead to plant growth, and the stems tend to be thin. Through continuous picking of the heart for shading, the plant growth can be adjusted, and it is more suitable for summer cultivation of tomatoes. . The method of shaping is that when the first and second panicles bloom one after another, two leaves on the second panicle remain topping. The lateral branches that grow from the nodes next to the second inflorescence are to be retained as the stems continue to develop upwards. Afterwards, the method continues to be used for heart-dressing to form a curved upward plant shape. This type of shaping method is very effective in controlling the growth in the high temperature season. It is mainly to remove the apical dominance, promote the growth of lateral buds, and ensure that the branches and leaves are thick and the stems are thick.
In winter, due to lack of light, it is recommended that the farmer timely remove the leaves, improve the light transmission conditions of the plants, and promote fruit ripening. However, this method of picking leaves is not desirable in summer. Long summer illumination and high light intensity affect the fruit more severely. In particular, tomato plants on the top and on the outside of the tomato fruit are exposed to strong sunlight and increase the temperature of the fruit epidermis. High, prone to sunburn. Therefore, do not try to beat the leaves early in the summer, unless the leaves are too dense and seriously affect the lower air and light.
Timely late fruits, first cultivate strong trees
Many vegetable farmers believe that the temperature in the summer is high and can leave more fruits. However, too much fruit in the lower part of the plant, excessive nutrient consumption, will seriously affect the growth of stems and leaves and roots, resulting in insufficient supply of nutrients absorbed from the soil, less accumulation of photosynthetic products, tomato flowering and fruit setting will be greatly affected.
It is recommended that the vegetable grower should not leave too much fruit in the lower part of the plant. If the plant stalk is relatively weak, remove the first spike flower, first cultivate the strong tree, and then leave more fruit. There are two reasons for the removal of the first fruit: one is that the first fruit is easy to fall on the tree, which is not conducive to the high yield of the tomato; second, because the temperature is high during the seedling stage, the fruit is often poorly differentiated and bears more fruits. For malformation, poor commercial property. If the plant growth is relatively robust, the first ear fruit can be 2-3, the second ear fruit 3-4, the third ear fruit 4 and the upward ear 4-5 fruit.
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