Under normal circumstances, vegetable varieties are more sensitive to certain pesticides, or have high drug concentration or do not dry for a long time, it will produce phytotoxicity. The damage of young leaves is the most serious, and the yellowing and whitening of the surface is the injury of leaf tissue. Gas damage is mostly manifested as leaf edge damage and discoloration. The upper middle part of the leaf has the strongest absorption and the most serious damage. However, if it only shows that the young leaves turn yellow and white and the leaf tissue itself is not damaged, it is currently cold watering. Excessive quantities of clay are extremely serious in clay land.
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