How to deal with deadlock in tomato in greenhouse

1.Control the temperature in the shed

In winter, tomatoes are most likely to produce dead fruit, especially for long periods of continuous rain, snow, and snow, with low light and high night temperatures. Tomato leaves produce fewer nutrients during the day, and they consume more at night. In this case, the night temperature can be reduced to 10 ° C ~ 12 ° C, so that the tomato can be maintained at the lowest growth temperature to reduce nutrient consumption and reduce the occurrence of dead fruit.

2. Pay attention to reasonable fertilization and watering

Insufficient fertilizer supply causes poor plant growth, or excessively sufficient fertilizer causes plant growth, which can easily lead to the occurrence of dead fruit. Especially for tomatoes in the late stage of growth, they must provide sufficient nutrients for their growth, and special attention must be paid to supplement potassium fertilizer to avoid a large number of deadlocks due to lack of fertilizer. In winter, tomato topdressing is generally based on nitrogen, phosphorus, and potassium compound fertilizers or organic fertilizers. It is advisable to apply about 20 kg of nitrogen, phosphorus, and potassium compound fertilizers per acre each time, and appropriate application of calcium fertilizer. In winter watering should pay attention to the amount of water should not be too large, it is best to use micro-irrigation, avoid large-water flooding, so as to avoid water damage to the roots at low temperatures, resulting in weakened root system ability to absorb nutrients, deadlock.

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