Answer: At present, many vegetable farmers are more “squeaky†when using drugs. When they are compounded, they add a variety of agents. The multiple components of these agents appear to repeat, which increases the concentration of the drug solution virtually and eventually leads to the occurrence of drug injury. According to the production experience, loofah spraying leaves 2 to 3 days after the whole shed appears dry leaves, usually caused by phytotoxicity. It is suggested that functional products such as brassin, Hailijia, and Yishou should be sprayed first to prevent the continuous expansion of drug damage. Pay attention to the appropriate amount, do not overcorrect and appear secondary damage. Secondly, topdressing with water and raising the amount of nitrogen to promote the vegetative growth of the plant.
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