How to control Noctuidae is the best?

1. You can mix 8- 10 kg of wheat bran with 2 kg of water per mu with 150 g, and spread it along the corn ridge, or you can sprinkle 4-5 kg of fried wheat bran or crushed fried cottonseed cake with 90% crystal trichlorfon with a small amount of water next to the corn seedling, and then kill the moth when it comes out to eat at night.

2. Mix 25 kilograms of fine soil with 300-500 ml of 80% dichlorvos emulsifiable concentrate per mu, and spread it on the ridge of corn seedlings in the morning, which has a good control effect.

3. With the irrigation of water, use 50% phoxim EC and 48% chlorpyrifos EC 1 kg per mu, and water them in the field to kill Noctuidae.

4. It can also be sprayed with 4% high chlorine emamectin benzoate diluted 1000- 1500 times solution. When applying pesticides, the amount of water should be sufficient, and the surface of corn seedlings and fields should be sprayed once. When spraying, it should be concentrated at the base and around the corn stalk.

Second, when will the control effect of Noctuidae be good?

The control of Spodoptera litura should be based on the principle of early treatment and small treatment, and it is best to control it before the emergence of corn.

Three or two reasons why Noctuidae is difficult to treat.

1, 2: 00 Spodoptera litura hides under wet broken wheat straw during the day and comes out at night. It is difficult to spray chemicals on the surface of insects, so it is difficult to kill pests.

2. Because Spodoptera litura mainly harms larvae, it is not easy to be found under broken wheat straw during the day. In addition, the concept of paying attention to treatment while ignoring prevention is invalid, which leads to more and more harm.

3. With the wide application of harvesters and other large agricultural machinery, a large number of wheat straws remain in the field, which provides favorable conditions for the reproduction and development of Spodoptera litura and brings difficulties to its control.