Contribution Rate of Plant Protection Measures to Prevention and Control of Diseases and Insect Pests of Oilseed Rape in Hunan Province During 2022-2023
This study aims to evaluate the effects of diseases and insect pests on oilseed rape production and the role of plant protection measures in loss reduction and yield improvement.In 2022-2023,the Hunan Plant Protection and Inspection Station organized the work of evaluating the contribution rates of plant protection measures to the prevention and control of diseases and insect pests of oilseed rape in Qidong,Dingcheng,Taojiang,and Yongxing.Wide field trials were carried out with the treatments of strict prevention and control,unified prevention and control,farmers'experience-based control,and no prevention and control measures(control)to evaluate the contribution rates in different counties or districts.The results showed that the actual loss ratios in different counties or districts were within the range of 0.17%-67.56%,and the contribution rate of plant protection measures to the prevention and control of diseases and insect pests of oilseed rape ranged from 4.10%to 67.56%.Specifically,the contribution rates of plant protection measures to the prevention and control of diseases and insect pests(without weeds)of oilseed rape were 25.73%,35.49%,23.50%,and 33.36%in Qidong,Dingcheng,Taojiang,and Yongxing,respectively.The overall contribution rate in Hunan was 28.51%.Based on the results,it was estimated that the plant protection measures reduced the rapeseed loss by 0.738 billion kilograms in Hunan during 2022-2023.
diseases and insect pests of oilseed rapeunified prevention and controlfarmers'experience-based controlcontrol effectcontribution rate of plant protection measuresHunan
万方数据
