Pay attention to control of corn "invisible" pests

At present, summer sowing maize is in a period of high growth. Thrips is one of the main pests of corn in seedling stage. In recent years, corn puffer horses have generally occurred in our province and have been increasing year by year. As the body size of the worms is small, the body length is only 1 to 2 mm, and most of the adults and nymphs are very active. The active parts are hidden and difficult to be discovered, and even miss the prevention and control opportunities. Coupled with the continuous low temperature and low rainfall in recent days, the climate is dry, which is conducive to the hazards of corn thrips. Corn Hummer entered the peak period in mid-July, and in order to control the occurrence and damage of corn Hummer, it is hoped that the majority of farmers will pay attention to inspections.

First, the harmful symptoms of thrips adult larvae, larvae in the field are mostly mixed overlap occurs, the main damage to the corn leaves, after the victim corn leaves appear intermittent edge of the silver-gray strips, and accompanied by small stains. With the growth of corn, the heart and leaves of corn form an "tail-like shape", which will cause the leaves to dry and cause a large number of dead seedlings.

Second, control methods

1. When the seedlings are seedlings and seedlings, the insect pests are extirpated, the manure outside the field is taken out, and the fertilizer and water management is strengthened. The surrounding weeds are removed in time to reduce the damage of the corn thrips.

2. Use 10% imidacloprid wettable powder 20 g or 4.5% beta-cypermethrin EC 30-45 ml per acre to spray 30 kg of water for prevention and cure.

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