The National Agricultural Technology Extension and Service Center recently released the “National Surveillance Results for Pests against Agricultural Pests in 2009†and suggested that the use of imidacloprid should be suspended for the control of brown planthoppers. In some areas, the use of pesticides and triazophos should be suspended. The cotton field in the North China Plain should pay attention to the use of phoxim and lambda-cyhalothrin to prevent and control cotton bollworm.
1, brown rice planthoppers. In 2009, the proportion of high-resistance and high-resistance of imidacloprid in the 22 provinces (autonomous regions, municipalities directly under the central government) accounted for 95.5% and 4.5%, respectively (74.1% and 25.9% in 2008 and 50% in 2007 respectively). , 50%), indicating that its resistance to imidacloprid continued to show a trend of growth, it is recommended that the use of imidacloprid should be suspended for the control of brown planthoppers, and the use of imidacloprid should be minimized in the control of whitebacked planthoppers. The level of resistance to buprofezin increased from 12.5% ​​in 2007 to 25.9% in 2008 to 68.2% in 2009, and there were no sensitive populations, indicating that the resistance to buprofezin of N. lugens continues to increase, and it is recommended that It is used in conjunction with other pharmacy sciences to delay the development of its resistance.
2, Slaughterhouse. The populations of Laodelphax striatellus in three provinces of Jiangsu, Zhejiang, and Anhui were all sensitive to thiamethoxam, nitenpyram, and pymetrozine. The chlorpyrifos were moderately resistant to chlorpyrifos. Care should be taken to prevent the use of this agent and other agents. Gray fly cricket.
3, II. The monitoring results of the population of S. indica in the eight provinces of Jiangsu, Zhejiang, Anhui, Hubei and Sichuan showed that the distribution of resistance to the four insecticides has a distinct regionality. Among them, the test population in most areas of Zhejiang, Jiangsu, and Anhui has generally had medium to very high levels of resistance to insecticidal and triazophos, moderate to high levels of resistance to chlorpyrifos, and low levels of resistance to avermectin. Sex; Hubei populations produce moderate levels of resistance to insecticides and chlorpyrifos, and are sensitive to triazophos and abamectin; Sichuan populations have not yet developed resistance to 4 agents. It is suggested that the use of pesticides and triazophos should be suspended in the areas with high levels of resistance for the prevention and treatment of SCAR.
4. McMug. The populations of A. sinica in 9 provinces (cities) in Beijing, Hebei, Henan, Shandong, Jiangsu and Anhui were all sensitive to omethoate, anti-indoles, imidacloprid, and acetamiprid; Dimethoate and imidacloprid are in a state of sensitivity to sensitivity, and they are sensitive to low levels of resistance against conovia and acetamiprid. The monitoring results showed that the sensitivity of the pupa cricket to pharmacy was different between the populations at different locations than that of the wheat pupae, and the populations of Hebei, Shandong and Henan had resistance to the neonicotinoids imidacloprid and acetamiprid. Increase the trend.
5. Cotton bollworm. The monitoring results of cotton bollworm populations in 20 provinces (autonomous regions) in 11 provinces (autonomous regions) showed that most cotton bollworm populations in Shandong Peninsula and North China Plain had low to high levels of resistance to phoxim and moderate levels of lambda-cyhalothrin. High-level resistance; most populations of Helicoverpa armigera in the Yangtze River and Xinjiang regions have not yet developed resistance to phoxim and are sensitive to low-level resistance to lambda-cyhalothrin. It is suggested that the use of phoxim and lambda-cyhalothrin should be used to prevent and control cotton bollworm in the peninsula of Shandong Peninsula and North China Plain.
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