Winter greenhouse tomatoes are prone to hollow fruit with external expansion and less fruit, which not only directly affects the yield, but also greatly reduces the quality and taste of the tomatoes.

The direct cause of the hollowness of the tomato is that the temperature of the water in the greenhouse is lower than 7 °C. At low temperature, the root of the tomato is cold-shrinked, the root activity is reduced, and the water absorption is poor. At this time, the tomato is in a period of expansion, and the water is not in the short term. Satisfying physiological needs, resulting in local fruit less meat. Although the ground temperature increased and the roots recovered to absorb water, the hollow part of the expanded fruit could no longer be enriched. Therefore, the water temperature of the greenhouse tomatoes in winter must be increased to above 10 °C in advance. Temporary watering can be used in the corner of the greenhouse to facilitate warming.

In addition, in winter, the anti-plants are affected by freezing damage, and measures should be taken to prevent freezing and to enhance the cold resistance of tomatoes. In the fruit development period, combined with spraying foliar fertilizer, add appropriate amount of vegetable fruit Zhuangting capsule to regulate the vegetative growth of plants to reproductive growth, increase nutrient transport, increase fruit expansion speed, preserve fruit and fruit, and produce high quality tomatoes. . When used, it is usually sprayed once before flowering, young fruit, and fruit expansion, and the effect is best.

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