Hollow fruit occurs in different seasons of tomato cultivation, which seriously affects the fruit quality. In the autumn, how to reduce the occurrence of tomato hollow fruit?
First, the concentration of gibberellin in point anther should not be too high.
The temperature in the fall is still very high. Some growers add too much gibberellin. If the gibberellin concentration is too high, it will easily stimulate the development of the pericarp so that the exocarp grows rapidly, and the tissue growth inside the fruit is relatively slow. Hollow.
Second, field operations cannot be premature and excessive.
During the middle and late stages of tomato growth, leaves should be picked properly to enhance light and promote ventilation. However, it should be noted that it should not be removed too early, otherwise the photosynthetic area will be insufficient, the accumulated photosynthetic products will be less, the nutrient supply will be insufficient, the fruits will be poorly developed, and empty fruit will appear easily.
Once again, lighting management needs to be strengthened.
In many greenhouses, the density of shade nets is too large, and when it is cloudy, it has not been removed in time, and the shading time is too long or the transmittance of the shed film is poor. The tomato's light saturation point is 60,000-70,000 lux and the light compensation point is 1000 lux.
For tomatoes to maintain normal growth and development, light intensity of 30,000 lux or more is required. If the light saturation point is not reached for a long period of time, there will be less photosynthate produced and the nutrient supply of stems and leaves and fruits will not be satisfied. Therefore, in the rainy weather, the dust attached to the shed film should be promptly removed, and the shade net should be removed, and then covered when the light is strong.
Finally, prevent the night temperature from being too high.
Because the night temperature is too high and the temperature difference between day and night is small, the nutrients produced by the tomato during the day are heavily used for respiratory depletion, resulting in insufficient accumulation of nutrients in the plants, and the fruit is prone to voiding.
Therefore, in actual production, ventilation should be strengthened, air vents should be expanded, temperature difference between day and night should be increased, and nutrient consumption should be reduced to avoid hollowness.
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