Abstract:

Due to the abnormal high temperature and drought weather affecting weed control effectiveness, the direct seeding cultivation mode being conducive to weed growth, and the extensive field management being prone to grass or pesticide damage, the occurrence of weeds in the rice areas of the Zhejiang North Plain in 2022 is severe, with multiple types of occurrence and poor control effects, and grass damage is significantly more severe than usual. This article takes Jiaxing City as an example to analyze the characteristics and reasons for the severe occurrence of weeds in rice fields in Jiaxing area in 2022, and proposes countermeasures and suggestions for the next comprehensive management of weeds in rice fields: Firstly, we need to improve farmland infrastructure, promote the construction of high standard farmland, and enhance disaster prevention and reduction capabilities; Secondly, we must vigorously promote rice machine transplanting and switch from live broadcasting to transplanting to reduce the occurrence of weeds; Thirdly, we need to improve weed control technologies, vigorously promote them, and increase their coverage.

Key words: weeds in rice field, occurrence characteristics, causes of severe occurrence, prevention and control measures