After the national ban on highly toxic pesticides, how to prevent and control diseases and pests?

Highly toxic pesticides refer to the toxicity of pesticides, that is, the degree of toxic effects of pesticides on human beings and livestock. In this regard, the state has banned many highly toxic pesticides, but in this way, many farmers will have to ask, how to prevent and control diseases and pests?

In fact, after highly toxic pesticides are banned, there are still alternative pesticides, such as:

(1) Rice pests

1. The varieties that can be used to control rice stem borer are:

(1) Chlorobenzamide (Kangkuan). The control effect of Chilo suppressalis was good when it was applied 3-7 days before transplanting, the first generation stem borer control period, the second generation stem borer control period and the third generation stem borer control period. The chemical concentration of 20% Kang wide 10mL/ mu and 15mL/ mu can be used, especially the effect of 15mL/ mu is the best, the water consumption per mu is 50 L / mu, and the whole plant is sprayed evenly.

(2) Chlorobenzamide? Thiazide (Fogo). The recommended dosage of 8-12 grams per mu is sprayed during the incubation period of rice stem borer eggs and before the peak of the 3rd instar of rice leaf borer, and the effect is obvious on rice planthopper. It is the best agent for integrated control of rice stem borer and rice planthopper.

(3) triazophos. The recommended dose is 30,40g active ingredients / mu. The application technology should be as follows: spraying during the peak incubation period of stem borer eggs. Due to the long residual period of triazophos and its stimulating effect on rice brown planthopper, triazophos should be used before heading stage and recommended in early rice or the first half of the year. It is not suitable to be used in areas where Chilo suppressalis is highly resistant to triazophos.

2. The varieties that can be used to control rice stem borer are:

(1) Chlorobenzamide (Kangkuan). Recommended concentration of 20% Kang wide 10mL/ mu and 15mL/ mu can be used, especially the effect of 15mL/ mu is the best, water consumption per mu is 50 L / mu, and the whole plant is sprayed evenly.

(2) Chlorobenzamide? Thiazide (Fogo). Spraying 8-12 grams per mu of rice stem borer (Chilo suppressalis) during the incubation period and before the peak of the 3rd instar of rice leaf borer has a significant effect, and has obvious effect on both rice planthopper and rice planthopper. It is the best agent for integrated control of rice stem borer and rice planthopper.

(3) chlorpyrifos. The recommended dose is 40-50 g active ingredient / mu. The point of using the technique is to apply pesticide during the peak incubation period of the eggs of Chilo suppressalis.

3. The varieties that can be used to control rice leaf roller are:

(1) Chlorobenzamide (Kangkuan). Recommended concentration of 20% Kang wide 10mL/ mu and 15mL/ mu can be used, especially the effect of 15mL/ mu is the best, water consumption per mu is 50 L / mu, and the whole plant is sprayed evenly.

(2) Chlorobenzamide? Thiazide (Fogo). Spraying 8-12 grams per mu of rice stem borer (Chilo suppressalis) during the incubation period and before the peak of the 3rd instar of rice leaf borer has a significant effect, and has obvious effect on both rice planthopper and rice planthopper. It is the best agent for integrated control of rice stem borer and rice planthopper.

(3) avermectin. The recommended dose is 0.72-0.9g active ingredient / mu. The application technique should be as follows: spraying before the second instar of rice leaf borer larvae, preferably during the peak egg hatching period.

4. the varieties that can be used to control rice brown planthopper are:

(1) buprofezin. The recommended dose is 7.5-12.5 g active ingredient / mu. The application techniques should be as follows: spraying in the initial stage of brown planthopper, it is best to keep the water layer in the field.

(2) Pyrazidone (peak). The recommended dose is 20 grams. The application techniques should be as follows: spraying in the initial stage of brown planthopper, it is best to keep the water layer in the field.

5. The varieties that can be used to control rice white-backed planthopper are:

(1) buprofezin. The recommended dose is 7.5-12.5 g active ingredient / mu. The application techniques should be as follows: spraying in the initial stage of brown planthopper, it is best to keep the water layer in the field.

(2) imidacloprid. The recommended dose is 1-2g active ingredient / mu. The application technique should be as follows: spraying in the initial stage of brown planthopper.

(3) Pyrazidone (peak). The recommended dose is 20 grams. The techniques to be used are as follows: when 25% aphid WP is selected to control white-backed planthopper, when the number of larvae is 1000 to 2000, 25% aphid 20g/667m2 is recommended. About 15 days after the first application, if the white-backed planthopper continues to migrate and the number of insects in the field increases, the second application can be considered. Focus on the uniform spraying of the middle and lower part of rice; in the stage of rice heading and flowering, the rice should be divided into boxes by 1.5 × 2m in the field, leave out the aisle, and then aim at the lower part.

(2) Wheat pests

The varieties that can be used to control wheat aphids are:

(1) acetamiprid. The recommended dose is 0.6-0.9g active ingredient / mu. The key points of application technology are as follows: spraying in the initial stage of aphids in wheat panicle stage.

(2) aldicarb. The recommended dose is 5.0-7.5g active ingredient / mu. The key points of application are as follows: spraying in the initial peak stage of wheat seedling aphid or spike aphid.

(3) cyhalothrin. The recommended dose is 0.5-0.6 g active ingredient / mu. The key points of application are as follows: spraying in the initial stage of wheat seedling aphid. Because pyrethroids pesticides are more lethal to natural enemies, it is not suitable to be used to control aphids at panicle stage.

(3) vegetable pests

1. The varieties that can be used to control vegetable aphids are:

(1) imidacloprid. The recommended dose is 1.0 ~ 2.0g active ingredient / mu. The key points of application technology are as follows: spraying in the period when aphids are prevalent.

(2) acetamiprid. The recommended dose is 0.45 to 0.6 g active ingredient / mu. The key points of application technology are as follows: spraying in the period when aphids are prevalent.

2. The varieties that can be used to control vegetable Bemisia Tabaci are:

(1) imidacloprid. The recommended dose is 2.0g active ingredient / mu. The main technical points of application are as follows: spraying during the initial epidemic period of Bemisia Tabaci.

(2) bifenthrin. The recommended dose is 0.75g active ingredient / mu. The main technical points of application are as follows: spraying during the initial epidemic period of Bemisia Tabaci.

3. The varieties that can be used to control beet armyworm are:

(1) chlorfenapyr. The recommended dose is 5.0g active ingredient / mu. The key points of application are as follows: spraying beet armyworm before 2 years old.

(2) furofenozide. The recommended dose is 6.0g active ingredient / mu. The key points of application are as follows: spraying beet armyworm before 2 years old.

4. The varieties that can be used to control Plutella xylostella are:

(1) Methylaminoavermectin. The recommended dose is 0.15 to 0.25g active ingredient / mu. The key points of application are as follows: spraying Plutella xylostella from the peak hatching period of eggs to the second instar of larvae.

(2) chlorfenapyr. The recommended dose is 3.35 ~ 5.0g active ingredient / mu. The key points of application are as follows: spraying from the peak hatching period of cabbage eggs to the second instar of larvae.