The main pests of the ground are the cockroaches, cockroaches, and golden-needle beetles, of which the cockroaches are most harmful to wheat. After the Spring Festival, the peak period of the harmfulness of underground pests was from mid-March to early April. They bite off the roots of wheat, resulting in severe lack of seedlings and ridges, which has a great impact on wheat yield.

In recent years, the underground pests have become more and more serious. The basic causes are two reasons: First, they cannot see the harm when plowing, they do not pay attention to prevention and control, and some do not even control; second, the underground pest treatment agent on the market. Variety, uneven quality.

Control methods: According to the weather forecast, before the rain, use phoxim or 3911 mixed soil or poisonous bait to spread, where there is dead wheat, where you have to spread more points to the surrounding, after the rain, the drug soil seeps into the soil. Can quickly kill the underground pests; with irrigation grams of water sprayed wheat roots, 50 grams of water per barrel, the roots of the underground pests harmful to the root spray, so that the liquid downflow, the effect of insecticide is better.

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