摘要
在实验室内探讨了三唑酮、甲基硫菌灵、福美双、恶霜灵和甲霜灵等 5种杀菌剂单用或混用对蚕豆种子萌发和幼苗生长的影响 .据此 ,在田间开展了杀菌剂拌种和杀菌剂与杀虫剂混用防治蚕豆根腐病的研究 .第 1年的结果表明 ,在 11个处理中 ,三唑酮单独拌种效果最为显著 ,与对照相比 ,在 0 .0 1ga .i·kg-1种子的剂量下 ,使 6周龄植株的根腐病指数降低 5 1.5 % ,成株累计死亡率减少 36 % ,单株种子产量提高2 1% ,每公顷种子产量增加 97.6 % ,其他处理未取得显著防效 .第 2年开展的三唑酮拌种试验 ,亦成株累计死亡率比对照减少 31.9% ,种子产量增加 19.6 % .连续 2年的研究均证明 ,三唑酮拌种是防治蚕豆根腐病的有效措施之一 ,但杀菌剂拌种应与其他防治措施综合应用 。
The effect of pesticides on field controlling root rot of Vicia faba was studied in two consecutive years by seed treatment of fungicides and their combination.The results of the first year field experiments showed that among the 11 treatments tested,triadimefon of 0.01 g a.i·kg -1 seeds was more effective than other fungicides applied singly or in combinations.The other test fungicides included thiophanate methyl, thiram, oxadixyl and metalaxyl.Compared to the control, triadimefon treatment reduced the root rot index of 6 week old seedlings by 51.5% ,and plant accumulated percent mortality by 36%.Consequently,the treatment increased seed yield/plant by 21% and seed yield/ ha by 97.6%.In the trials carried out in the following year,the plant percent mortality was reduced by 31.9% and seed yield increased by 19.6% under triadimefon seed treatment.It is demonstrated that seed treatment by triadimefon effectively controlled root rot,promoted plant growth, and increased seed yield of faba bean in the fields.
出处
《应用生态学报》
CAS
CSCD
2002年第8期943-947,共5页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划项目 (G2 0 0 0 0 1860 2 )
甘肃省重点科技攻关资助项目 (GK911 2 68) .
