The Ministry of Agriculture Announcement No. 322 states that by January 1, 2007, five high-toxic organophosphorus pesticides such as methamidophos will be completely banned in agriculture. The five prohibited pesticides are methamidophos and parathion. , methyl parathion, monocrotophos, phosphorus amine. Experts recommend 17 pesticides such as fipronil as the first batch of five highly toxic pesticides such as methamidophos. Among them, 7 species can be used to control rice pests, and 3 species can be used to control wheat pests. Seven species of pests and seven species of vegetable pests.
First, rice pests 1. Control rice stem borer, the varieties that can be used are: (1) fipronil. The recommended dosage is 1.5 to 2.5 g of active ingredient per mu. The technical points used are: spray application at the peak of hatching of the stems of the sorghum, and the water layer or the water layer can be maintained in the field. Because fipronil is highly toxic to bees and aquatic organisms, it is highly toxic to special shrimps and crabs. Therefore, do not use it in bee culture areas and shrimp and crab culture areas. If it is to be used, it is recommended to drain the field water before use. Do not discharge into the fish ponds and river ditch in paddy fields after fipronil. (2) Fipronil + trichlorfon (1:49). The recommended dose is 50g active ingredient per mu. The technical point of use is: spray application at the peak of hatching of the stems of the sorghum, and it is best to keep the water layer in the field. Do not use in shrimp or crab farming areas. (3) Triazophos. The recommended dosage is 30 to 40 g of active ingredient per mu. The use of technology should be done as follows: Spray application at the peak of hatching of the stems of the sorghum. Due to the long residual period of triazophos, it has a stimulating effect on rice brown planthopper, so it should be used before the rice heading period. It is recommended to be used in early rice or first half. It is not suitable for use in areas where the stem borer is highly resistant to triazophos. 2, prevention and control of rice stem borer, the varieties that can be used are: chlorpyrifos. The recommended dosage is 40 to 50 g of active ingredient per mu. The use of technology should be done as follows: Apply at the peak of hatching of the eggs. 3, prevention and control of rice leaf roller, the varieties that can be used are: avermectin . The recommended dose is 0.72 to 0.9 g of active ingredient per mu. The technique should be used as follows: Spray application before the second instar of the rice leaf roller larvae, preferably at the peak of egg hatching. 4, control rice brown planthopper, the varieties that can be used are: buprofezin. The recommended dosage is 7.5 to 12.5 g of active ingredient per mu. The technique should be used as a point: spray application at the initial stage of brown planthopper, and it is best to keep the water layer in the field when applying. 5, prevention and control of rice whitebacked planthopper, the varieties that can be used are: (1) buprofezin. The recommended dosage is 7.5 to 12.5 g of active ingredient per mu. The technique should be used as a point: spray application at the initial stage of brown planthopper, and it is best to keep the water layer in the field when applying. (2) Imidacloprid. The recommended dosage is 1 to 2 g of active ingredient per mu. The technique should be used as a point: spray application at the initial stage of brown planthopper.
Second, wheat pest control wheat aphids, the varieties that can be used are: (1) acetamiprid. It is recommended to use a dose of 0.6 to 0.9 g of active ingredient per mu. The technical points of use are: spray application at the initial stage of aphid at the wheat ear stage. (2) Resistance to Converse. The recommended dosage is 5.0 to 7.5 g of active ingredient per mu. The technical points of use are: spraying at the beginning of wheat seedlings or spikes. (3) cyhalothrin. It is recommended to use a dose of 0.5 to 0.6 g of active ingredient per mu. The technical points of use are: spray application at the beginning of wheat seedlings. Because pyrethroid pesticides have a greater lethal effect on natural enemies, it is not suitable for use in controlling aphids at the ear stage.
Third, cotton pests 1, control cotton aphid, the varieties that can be used are: (1) imidacloprid. It is recommended to use a dose of 1 to 2 g of active ingredient per mu. The technical points of use are: spray application at the initial stage of cotton aphid, once every 10 days. (2) acetamiprid. The recommended dosage is 0.45-0.6 g active ingredient/mu. The technical points of use are: spray application at the initial stage of cotton aphid, once every 10 days. (3) Dithiocarbamate. The recommended dosage is 6-9g active ingredient/mu. The technical points of use are: spray application at the initial stage of cotton aphid, once every 10 days. 2, control cotton spider red spiders, the varieties that can be used are: (1) anthrone. The recommended dosage is 2.25~3g active ingredient/mu. The technical point of use is: cotton red spider is sprayed at the beginning of the period. (2) Avermectin. The recommended dosage is 0.27 to 0.36 g of active ingredient per mu. The technical point of use is: cotton red spider is sprayed at the beginning of the period. 3, the control of cotton bollworm, the varieties that can be used are: (1) indoxacarb. The recommended concentration is 40ppm. The technical points of use are: spray application of cotton bollworm eggs during the incubation period. (2) Emamectin. It is recommended to use a dose of 0.4 to 0.6 g of active ingredient per mu. The technical points of use are: spray application of cotton bollworm eggs during the incubation period.
4. Vegetable pests 1. Controlling vegetable aphids, the varieties that can be used are: (1) imidacloprid. It is recommended to use a dose of 1.0 to 2.0 g of active ingredient per mu. The technical point of use is: spray application at the beginning of the locust. (2) acetamiprid. The recommended dosage is 0.45-0.6 g active ingredient/mu. The technical point of use is: spray application at the beginning of the locust. 2, control of vegetable whitefly, the varieties that can be used are: (1) imidacloprid. The recommended dosage is 2.0g active ingredient per mu. The technical point of use is: spray application at the beginning of the season of tobacco powder. (2) Bifenthrin. The recommended dosage is 0.75g active ingredient per mu. The technical point of use is: spray application at the beginning of the season of tobacco powder. 3. For the control of beet armyworm, the varieties that can be used are: (1) chlorfenapyr. The recommended dosage is 5.0g active ingredient per mu. The technical point of use is: spray application before the second instar of beet armyworm. (2) Furanyl hydrazide. The recommended dosage is 6.0g active ingredient per mu. The technical point of use is: spray application before the second instar of beet armyworm. 4, control of Plutella xylostella, the varieties that can be used are: (1) methylamino avicin. It is recommended to use a dose of 0.15 to 0.25 g of active ingredient per mu. The technical points of use are: spray application at the peak of hatching of Plutella xylostella to 2 years before larvae. (2) Fipronil. It is recommended to use a dose of 1.0 to 2.0 g of active ingredient per mu. The technical points of use are: spray application before the hatching period of the small cabbage eggs until the 2nd instar of the larvae. (3) chlorfenapyr. The recommended dosage is 3.35 to 5.0 g of active ingredient per mu. The technical points of use are: spray application before the hatching period of the small cabbage eggs until the 2nd instar of the larvae.
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