Nowadays, when the tomatoes are planted in the greenhouse, the tomatoes are generally grown from August and September to the next year. The market will continue to be available in February. The supply of tomatoes will continue until the summer of June and July. The climate is high. It is not conducive to the weak temperature drop of the late growth of the seedlings, which is not conducive to pollinating fruit and fruit, and it is easy to cause diseases such as viral diseases and gray mold. In order to allow everyone to grow tomatoes more scientifically, on the morning of September 7th, the reporter interviewed Tan Chengliang, secretary of the party committee of Huyang Town, Feixian County, who has many years of experience in tomato planting, to guide the selection of tomatoes, breeding methods, greenhouse construction and other factors.
First of all, we must choose an excellent variety. In order to make full use of the greenhouse efficiency, the yield of varieties with long growth period, high yield and disease resistance should be greatly improved.
Second, we must cultivate strong seedlings. Take the method of purchasing seedlings and planting. The risk of purchasing seedlings and planting is high. When the cost is high, the phenomenon of seedlings is often reduced and the production is reduced or even eliminated. In order to completely solve this problem, the main method is to use the tray seedling method. The substrate for the soil carbonaceous material with more mineral elements is about 30 days, and when the tomato seedling height is 15-20 cm, it is planted. Farmers reduce their production costs through their own seedlings.
Once again, the problem of low temperature in the greenhouse should be solved. Too low a temperature will affect the growth rate of tomatoes, causing the occurrence of tomato gray mold and late blight. In order to solve this problem, straw bioreactor technology can be used. At present, the main operation steps of the technology have been to promote straw bioreactor technology: digging 25cm-36cm deep and 50cm-100cm ditch, placing corn stalks in the ditch and sprinkling the bacteria into the soil. cover. In the process of fermentation, the straw will generate a large amount of heat to increase the temperature in the shed at 3-5 °C and produce a large amount of carbon dioxide to achieve the purpose of raising the temperature of the shed. The fertilizer is also used to reduce the use of chemical fertilizers and pesticides.
Finally, reasonable plant density should be adjusted to increase yield. The greenhouse planting density is too high, so that the fruit set rate per plant is low and the fruit type is not high. After repeated experimentation, the greenhouse planting amount of tomatoes in the greenhouse is about 2000. When the first ear of the suitable plant is ripe, the lower leaves of the lower layer can be removed in time to enhance the ventilation and light-enhanced nutrient to transport the upper layer to improve the fruit setting rate. In this way, the tomato fruit can reach 20 layers.
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