At the moment, when it comes to planting tomatoes in greenhouses, tomatoes are generally planted in August and September and will be available in February next year. The market supply continues until June and July, and tomatoes grow through summer and several months of cold winter. Large climate change, high temperature in the early stage is not conducive to the growth of seedlings, weak light in the later period, and the decline in temperature is not conducive to pollination and fruit setting, which can easily cause diseases such as virus disease 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, Fei County, which has many years of experience in planting tomatoes, and conducted several selections of factors such as selection of tomato varieties, breeding methods, and greenhouse construction. guide.

First of all, we must choose a good breed. In order to make full use of the efficiency of greenhouses, we should choose varieties with long growth period, high yield, and disease resistance, and the yield can be greatly improved.

Second, we must cultivate strong seedlings. Adopting the method of buying seedlings and planting, the risks of purchasing seedlings and planting are high and the cost is high. There are often problems with seedlings that reduce production and even yield. In order to completely solve this problem, the main method adopted is the method of seedling cultivation. The substrate is turfgrass containing many mineral elements, and the seedling period is about 30 days. When the height of tomato seedlings is 15-20 centimeters, it is planted. The farmers reduced their production costs by growing their own seedlings.

Again, the problem of low temperature in the greenhouse should be solved. If the temperature is too low, it will affect the growth rate of tomatoes and cause tomato gray mold and late blight. In order to solve this problem, straw bioreactor technology can be used. At present, the technology has been promoted. The main operation steps of the straw bioreactor technology are: digging the ditch with a depth of 25cm-36cm and a width of 50cm-100cm and placing the corn stalk in the ditch. Sprinkle bacteria and fill it with soil. Straw in the fermentation process will produce a lot of heat, can increase the temperature within the shed 3-5 °C, while producing a lot of carbon dioxide, you can achieve the purpose of raising the temperature of the greenhouse, and has produced fertilizer, reducing the use of fertilizers, pesticides.

Finally, reasonable plant density should be adjusted to increase yield. If the greenhouse planting density is too high, the individual planting rate will be low, the fruit type will be thin and the yield will not be high. After repeated trial and error, the planting amount of greenhouse tomatoes in acres of sheds is about 2,000. When the first fruits of the plants are ripe, timely removal of old diseased branches and leaves can enhance ventilation and light transmission, enhance nutrient delivery to the upper layers, and increase fruit setting rate. . With this method, tomatoes can be set to 20 layers.

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