The pesticides used by the Ministry of Agriculture to control rice leaf roller are not only able to control rice leaf roller, but also kill other pests on the leaf surface, as well as drill collars such as rice borers and stem borer. Sanhua and so on. The recommended agents are mainly insecticides, ruthenium and triazolam, and some imidazoles, such as imidacloprid, which are formulated with triazoline as the main component in our country.
In October 2005, our National Ministry of Agriculture held a meeting in Kunming that allowed six pyrethroids to be used in rice fields. At present, beta-cypermethrin and 3-cyfluthrin (also known as fluvalinate) are better used. It must be noted that pyrethroids in silkworms and fish culture areas should be used with caution, because pyrethroids have certain toxicity to silkworms and fish.
Prevention and control of rice stripe disease:
1. Comprehensive prevention strategy: adhere to the plant protection policy of “prevention first, comprehensive preventionâ€, adopt the prevention and control strategy of “cutting off the poison source, treating the disease and preventing diseaseâ€, and control the gray planthopper and control the stripe disease.
2, prevention and control technology: (1) grasp the prevention and control of gray planthopper. Combined with the control of aphids in wheat ear, the control of Laodelphax striatellus was carried out, and the weeds at the edge of the field, the head and the ditch were removed, and the initial drug transmission medium was reduced. (2) Carry out pesticide soaking. Soaking seeds with the insecticide imidacloprid (1 gram of imidacloprid active ingredient / 12.5 kg of rice), the control effect can reach more than 50%. (3) Highlight the key points to prevent and control the gray planthoppers in the seedling stage. Wheat, rapeseed harvesting period Putian Puji gray planthopper, every 667 square meters of tax special 30-40 ml, spray 30 kg of water evenly, 3-5 days before transplanting, then re-treatment 1 time. (4) Grasp the key control of field hazards. In the rice tillering stage, 30-40 ml of Ruijinte is used every 667 square meters, and 40 kg of water is evenly sprayed to prevent the field fly ash. In the rice tillering stage, the field rate of 0.5% of the field strain was 0.5% per 667 square meters, and the spray was treated with 40 ml of water to 40 kg of water. The disease was treated once a week.
After the wheat harvest, the blind elephants will harm the cotton year by year. In the wheat harvest stage, the cotton field insects should be closely monitored and sprayed in time. According to the pesticide network , when selecting the control agent for blind scorpion, "80% Ruijinte water dispersible granules" can be used, the amount of aux is 2 grams, and evenly sprayed with 30 kg of water. In late June, the best prevention and control time for the second-generation cotton bollworm can be controlled by high-efficiency and low-toxicity such as “American removalâ€, “a-dimensional salt†and “beta-cypermethrinâ€.
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Universal inspection tools: hardness tester, Height ruler, Depth ruler, Outside ruler, Venire Caliper, etc.
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Spectrum analyzer |
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Best service:
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