One, corn soup Also known as corn borer, it is the world's corn pest. Its typical symptom is that after the heart leaves are pierced, the unfolded corn leaves appear neat rows of holes. Adults have phototaxis and chemotaxis, and eggs are produced on the back of the leaves near the midrib. Control methods: 1, eliminate overwhelming insect sources, remove corn stems, cores, etc., do not stay in the field. 2. Chemical control: In the large and small bell-mouth period, one kilogram of carbofuran (3%) is used per acre, or sprayed with phoxim. Second, the tiger One of the main underground pests of maize in my county has a pseudo dead nature and chemotaxis. Major damage to the corn seedlings, resulting in lack of seedlings broken ridge. Control methods: use trichlorfon or 25% kung fu spray, adults can be black light, sweet and sour lure moth trapping into moth. Three, locusts The major hazards to corn are corn borer, wheat birch, and wheat long tube borer, etc., and they all have an anniversary. The drought year is particularly serious. Adults and nymphs at the seedling stage are mostly concentrated in the heart of the leaf, causing harm by sucking. The flowering period is mostly concentrated on the tassel leaves of tassels and ears, and the peak of damage is during the big bell-mouth period of corn. Control methods: spray with 10% imidacloprid or anti-indolone.
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