At temperatures above 30°C, tomatoes will grow slowly, increasing photorespiration and affecting nutrient accumulation. For temperatures above 35°C, the water transpiration of the plant leaves was accelerated, and the water transport speed in the root could not keep up with the transpiration rate of the leaves, which could easily cause dehydration on the surface of the leaves.
Control methods: 1 To protect the tomatoes, it is necessary to add shade nets in time, increase the vents of the greenhouses, and be careful not to remove the insect nets; 2) spraying and applying 6000 times fluid to protect the leaf diseases.
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