At present, corn gradually enters the big bell-mouth period, and the main pests on corn are corn borer, armyworm, and second-generation bollworm. On July 9th, the plant protection station of the city surveyed 5-10% of the strains in the corn borer, 15 strains of insects in 100 strains, 80 insects in up to 100 strains, and 10 insects in the highest strain per plant. Most of them are 2-3 years old and are gradually entering the stage of harm. The affected plants are eaten as holes or nicks. At present, it is the best time to prevent and treat corn borer and some armyworm. Control methods: 1 Because the rate of worms is not very high, it can be captured manually. 2 Use phoxim granules to inject 1 small handful of heart leaf into the insect strain (note: wear protective gloves). The control effect is better. 3 can also use organic phosphorus or other insecticide spray control.
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