Common problems and solutions for winter sorghum tomatoes
At present, the winter greenhouse tomato is entering the growing season. Due to the high temperature during the day, the low temperature at night, and the temperature difference between day and night, the temperature difference is too large, so various problems such as deformed fruit, cracked fruit, fruit molt, etc. Will these problems occur? How do you need to solve them? 1. Tomato malformed fruit If the tomato fruit has oval, oblate, chrysanthemum, pointed, transverse, cracked, hollow, etc., it is a deformed fruit, and the malformed fruit of tomato is mainly caused by low temperature. The temperature of winter 茬 tomato in the flower bud differentiation period is very low, so the most abnormal fruit at this time, the deformed fruit of spring 茬 and autumn 茬 tomato is relatively small. So what should I do? Increasing the temperature of the greenhouse during the flower bud differentiation period of tomato is the only solution. During the flower bud differentiation and before the differentiation, the daytime temperature should be kept at 20-25 °C, and kept at 12-15 °C at night to ensure the flower buds. Normal differentiation. I have said in the previous article that planting greenhouse foods must understand the characteristics of the greenhouse, especially to know the minimum temperature of the greenhouse. If the minimum temperature is lower than 10 °C, it is not suitable for growing winter tomatoes. Of course, excessive use of 2.4-D spray will also cause tomato fruit malformation, but now the large-scale production of tomato is basically bumblebee pollination, greatly reducing the negative effects of hormones. 2, tomato cracked fruit Tomato cracking generally occurs in the green ripening stage and the color changing stage. The root cause of the cracked fruit is that the growth rate of the peel does not keep up with the growth rate of the pulp, which has a great relationship with the toughness of the peel. The moisture content of the winter tomato fruit is relatively high, and the peel is high. Insufficient toughness is easy to crack fruit. In order to prevent tomato cracking, in addition to some varieties with good crack resistance (Mao powder 802, Su powder series, Jinpeng, etc.), it is also important to increase the thickness and toughness of the peel. In daily cultivation management, the tomato needs to reduce nitrogen fertilizer during the fruiting period. The application of phosphorus and potassium fertilizer, spraying 0.7% calcium chloride solution and 0.1% borax solution 15-20 days before harvesting, increase the toughness of the peel and reduce the cracking. In the watering, the water should be balanced to prevent the over-wet after the long drought, the transpiration of the winter sorghum tomato is relatively small, the frequency of watering and the amount of watering should also be reduced. Generally, the water is poured in about 10 days, and the water is poured every acre. Water is about 10 square feet. 3, tomato fruit mink The root cause of tomato fruit molting is that the water film on the skin becomes covered with tenderness. After strong light irradiation and wind blowing, the skin shrinks to form a suede. In the winter greenhouse, the humidity is very high at night, and the water film is covered on the tomato. When the quilt is uncovered in the morning, if the vent is too fast, the skin will be formed. Therefore, when planting tomatoes in winter, first reduce the humidity in the shed as much as possible, and must use the drip irrigation under the membrane. This will not only cause less disease, but also the fruit grows well. In the morning, if the temperature rises, the air outlet should be opened immediately, but it must be opened first. A small air vent, let the seedlings and fruits adapt slowly, the water on the fruit surface is slowly dried, and then the air outlet is gradually enlarged. Winter 茬 tomato, due to the low outdoor temperature, we usually put a small air vent at 12 noon to 2 pm on sunny days, increase the air circulation in the shed, and also reduce the humidity, so even if it is cold in winter, it is necessary to release the wind properly. of. The above are the three common problems and solutions for winter tomato. This year's tomato price has been quite impressive, but the wintering tomato is more difficult to grow, so the farmers still need to observe in time, noting the common problems of winter tomato. Solved in time. In fact, in general, planting winter sorghum tomatoes, temperature is a key, if the temperature is right, the tomatoes will naturally grow better. For the wonderful pictures and hot comments about the winter 茬 tomato, you may be interested in the following recommended content, welcome to read.
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