Occurrence and Control of Rice Diseases and Insect Pests in Luanchuan County
At present, the rice seedlings in the Suichuan County have a three-leaf, one-heart, five-leaf and one-heart phase. Since May, rainfall in my county has increased, and alternation between cloudy and sunny conditions has resulted in the rice fields Putian whitebacked planthoppers, chafers, rice plants, seedlings, and evils. Diseases and insect pests such as seedling disease have occurred in succession and have shown a trend. According to systematic investigations conducted in various towns and townships, the specific conditions are as follows:
First, the current occurrence of pests
1. Rice Blast: Different levels of seedling emergence occurred. The area of ​​Putian in the county was 10,748 mu, and 1050 acres of seedlings occurred, accounting for 9.7% of the area of ​​Putian. The highest diseased rate was 96%, and the highest diseased leaf rate was 61. %. This year, the layout of rice varieties in our county has changed, the area of ​​rice varieties resistant to rice blast has decreased, and the area of ​​high-quality rice varieties with rice blast has increased. According to the historical and meteorological data and actual field analysis, it is expected that the occurrence of rice blast will become more serious. Recurring.
2. Bakanae disease (commonly known as public money): The current area is 2,100 mu, the general disease rate is 6.9%, and the highest diseased plant rate is 78%. The disease incidence type is mainly Xiangdeyou 8, and the township with heavy occurrence is Zhangfeng Town. Jinghan Town, Chengzi Town, Lane Town.
3, rice planthoppers, leafhoppers: the county has occurred to varying degrees. The highest number of 100 insects was 500, a total of 4,200 mu, accounting for 39.1% of the total area of ​​Putian. From the survey, the density of insects in the field was small, but the area was large. According to the characteristics of rapid propagation of leafhoppers and planthoppers, It is expected that the occurrence of leafhoppers and planthoppers will occur later in the season. Therefore, we must do a good job in prevention and control of Putian, strictly control the number of insect populations, and ensure safe production in Datian.
4. Scarab, Daohuang and sporadic occurrences occurred in an area of ​​123 mu.
Second, prevention advice:
1. Strengthen leadership and do a good job of training: All agricultural and technical integrated service centers in towns and townships should take pest control work as their primary task, go deep into villages for training, guide prevention, and control the initial stage of pest and disease control.
2. Strengthen pest monitoring and accurate reporting: Each township technician, especially the plant protection personnel, must conduct systematic investigations in-depth in the field to monitor the occurrence of pests and diseases, report them in a timely and accurate manner, and guide prevention and control.
3. Strengthen field management, rational irrigation and drainage, fertilization, and cultivation of strong maggots to improve seedling resistance.
4ã€Spray delivery of martial medicine, so that transplanting with medicines: spraying seedlings for 5-7 days before seedling transplanting, Xiaotian has a small area, has the characteristics of labor saving, labor saving, and provincial medicine, and can play a role in preventing flooding. To protect Daejeon's role, tricyclazole, Fuji No. 1, Inadagume, Kuoping, Lianliansha, and Feifei can be used as pharmaceutical agents.
5. General defense rule: When rice planthoppers become nymphs, the number of insects reaches 1,000, and when the rate of diseased rice plants reaches 5%, when the number of eggs of the locusts is 200, there are one or more blocks of locusts. The unified prevention and treatment, recommended pharmaceutical formulations: (1), mu 40% rice bran 40 g +20% Guinness 6 ml + buprofezin 30 g or 75% Imidacloprid 3 g + Kang wide 10 ml watered 30 kg spray. (2) Use 100 ml of Fuji No. 1 + Jinlishi 6 ml + buprofezin 30 g or 75% of imidacloprid 3 g + Kang wide 10 ml water 30 kg spray. The control subjects were rice blast, aphids and rice planthoppers.
First, the current occurrence of pests
1. Rice Blast: Different levels of seedling emergence occurred. The area of ​​Putian in the county was 10,748 mu, and 1050 acres of seedlings occurred, accounting for 9.7% of the area of ​​Putian. The highest diseased rate was 96%, and the highest diseased leaf rate was 61. %. This year, the layout of rice varieties in our county has changed, the area of ​​rice varieties resistant to rice blast has decreased, and the area of ​​high-quality rice varieties with rice blast has increased. According to the historical and meteorological data and actual field analysis, it is expected that the occurrence of rice blast will become more serious. Recurring.
2. Bakanae disease (commonly known as public money): The current area is 2,100 mu, the general disease rate is 6.9%, and the highest diseased plant rate is 78%. The disease incidence type is mainly Xiangdeyou 8, and the township with heavy occurrence is Zhangfeng Town. Jinghan Town, Chengzi Town, Lane Town.
3, rice planthoppers, leafhoppers: the county has occurred to varying degrees. The highest number of 100 insects was 500, a total of 4,200 mu, accounting for 39.1% of the total area of ​​Putian. From the survey, the density of insects in the field was small, but the area was large. According to the characteristics of rapid propagation of leafhoppers and planthoppers, It is expected that the occurrence of leafhoppers and planthoppers will occur later in the season. Therefore, we must do a good job in prevention and control of Putian, strictly control the number of insect populations, and ensure safe production in Datian.
4. Scarab, Daohuang and sporadic occurrences occurred in an area of ​​123 mu.
Second, prevention advice:
1. Strengthen leadership and do a good job of training: All agricultural and technical integrated service centers in towns and townships should take pest control work as their primary task, go deep into villages for training, guide prevention, and control the initial stage of pest and disease control.
2. Strengthen pest monitoring and accurate reporting: Each township technician, especially the plant protection personnel, must conduct systematic investigations in-depth in the field to monitor the occurrence of pests and diseases, report them in a timely and accurate manner, and guide prevention and control.
3. Strengthen field management, rational irrigation and drainage, fertilization, and cultivation of strong maggots to improve seedling resistance.
4ã€Spray delivery of martial medicine, so that transplanting with medicines: spraying seedlings for 5-7 days before seedling transplanting, Xiaotian has a small area, has the characteristics of labor saving, labor saving, and provincial medicine, and can play a role in preventing flooding. To protect Daejeon's role, tricyclazole, Fuji No. 1, Inadagume, Kuoping, Lianliansha, and Feifei can be used as pharmaceutical agents.
5. General defense rule: When rice planthoppers become nymphs, the number of insects reaches 1,000, and when the rate of diseased rice plants reaches 5%, when the number of eggs of the locusts is 200, there are one or more blocks of locusts. The unified prevention and treatment, recommended pharmaceutical formulations: (1), mu 40% rice bran 40 g +20% Guinness 6 ml + buprofezin 30 g or 75% Imidacloprid 3 g + Kang wide 10 ml watered 30 kg spray. (2) Use 100 ml of Fuji No. 1 + Jinlishi 6 ml + buprofezin 30 g or 75% of imidacloprid 3 g + Kang wide 10 ml water 30 kg spray. The control subjects were rice blast, aphids and rice planthoppers.
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