调查了郴州烟稻轮作区水稻及烤烟的除草剂使用情况，烟田应用的除草剂主要有草甘膦等13种。对桂阳、嘉禾、安仁、宜章、永兴5个烟区疑似除草剂药害的烟田进行调查，产生的症状主要有烟株畸形、叶片卷曲、叶片小而薄、轻微萎蔫、烟株异常矮小、芽扭曲、叶片发黄等。除草剂药害田烟株农艺性状较正常烟株差。对烟田土壤的检测结果表明：郴州地区烟草出现药害主要是二氯喹啉酸和二甲四氯引起的。对除草剂药害产生的原因进行了分析，并提出了治理对策。%The investigation on utilization of herbicide in tobacco -rice rotation area in Chenzhou showed that there were 13 types of herbicide applied in tobacco field ,such as glyphosate.The investigation on suspected herbicide phytotoxicity tobac-co in Guiyang,Jiahe,Anren,Yizhang and Yongxing showed that the symptoms of herbicide phytotoxicity are tobacco de -formity,leaf curling,small and thin leaf,slightly wilt,dwarfish stem,yellow leaves,buds distorted,etc..The agronomic traits of tobacco plant in field with herbicide phytotoxicity were worse than normal tobacco plant .The test on soil of tobacco field showed that the herbicide phytotoxicity in tobacco area of Chenzhou was induced by Quinclorac and chipton .And then the causes of herbicide phytotoxicity were analyzed ,and the countermeasures were put forward.
展开▼
