我国长残效除草剂使用概况、问题及对策

长残效除草剂在我国使用面积迅速扩大，因我国农业种植规模小，轮作复杂，农民施药技术水平低。喷洒器械落后等原因，长残效除草剂对后茬作物的药害连年发生，日趋严重，已给农业生产造成严重损失，并严重影响了农业种植业结构的调整。近年来我国除草剂生产发展迅速，供过于求，调整除草剂结构时机已成熟，应对有替代品种的长残效除草剂进行淘汰，应对无替代品种的长残效除草剂划区限制使用，同时要加强农药管理、使用技术的研究、药械的更新及提高使用技术。

Long Residual Herbicides in China-Current Status,Problems and Solutions

The land area treated with long residual herbicides in China is rapidly increasing.Because of small farm and field size,complicated crop rotational patterns,relatively poor spray equipment,and substandard application techniques employed by the average farmer,carryover injury from long residual herbicides occurs every year and is getting worse,with significant production losses already being realized,and a considerable effect on the rotational options of farmers.In recent years,the manufacture of new herbicides in China has increased rapidly with supply now exceeding demand.Some long residual herbicides are being replaced and discontinued,while others that cannot be replaced have been restricted to certain areas.At the same time,there remains a need to strengthen pesticide management,as well as to improve research on application technology,innovation of new spray equipment,and the spraying technique practiced by farmers.