农药学学报2026，Vol.28Issue(1)：46-55,10.DOI:10.16801/j.issn.1008-7303.2026.0001
脱叶剂应用现状及安全性评价研究进展
Recent advances in the application and safety evaluation of defoliants
摘要
Abstract
Defoliants are agrochemicals that promote leaf abscission by regulating crop physiological metabolism.Based on their mechanisms of action,they are categorized into two major types:hormone-based and herbicide-based defoliants.These compounds are widely applied in cotton,wheat,and oilseed rape to facilitate leaf drop and crop maturation,playing a critical role in modern mechanized harvesting systems.This article systematically reviews the classification,mechanisms of action,current registration status,application practices,and environmental safety of defoliants in China,while also discussing future prospects.Studies indicate that the impact of defoliants on crop yield and quality is influenced by factors such as product type,application dosage,timing,and frequency,necessitating scientific selection and standardized practices.However,current research on risk assessment remains insufficient.Long-term and large-scale use may pose risks of environmental residue and phytotoxicity to subsequent crops,highlighting the urgent need for further research to ensure agricultural ecological security and product quality.关键词
脱叶剂/应用现状/机械化采收/安全性评估/农药残留Key words
defoliant/application status/mechanized harvesting/safety assessment/pesticide residue分类
农业科技引用本文复制引用
梁星,魏龙兵,张克发,董丰收,潘兴鲁,徐军,吴小虎,郑永权..脱叶剂应用现状及安全性评价研究进展[J].农药学学报,2026,28(1):46-55,10.基金项目
国家重点研发项目(No.2023YFD1400904). Supported by National Key Research and Development Program of China(No.2023YFD1400904). （No.2023YFD1400904）
