Occurrence characteristics and control countermeasures of weeds in rice fields of Jiangsu Province in 2022
This paper presents a summary of the general situation of weeds occurrence in Jiangsu province in 2022.It was revealed that the prevalence of weeds in rice fields in 2022 exhibited the following characteristics:high occurrence,significant damage,high weed density,prolonged damage duration,notable regional variation in occurrence,and a greater prevalence in direct seeding rice fields compared to machine-seeding rice fields.Besides,the primary causes of serious weed occurrence in the current year were analyzed,including the high weed seed base,methods of rice cultivation and management practices,continuous high temperature and drought,and the inappropriate selection and timing of pesticide applications.The prevention and control strategies of enhancing monitoring and early warning,adhering to scientific control,and strengthening technical guidance and technical reserves were proposed to provide a scientific foundation for the rational and safe management of weeds in rice fields.