水稻恶苗病菌对咪鲜胺的抗性研究及治理

Study on Resistance of Fusarium monilifore to Prochloraz and Its Management

江苏省水稻恶苗病菌对咪鲜胺已产生较严重的抗性,其抗性频率已达82.14%,大部分菌株抗性水平为中抗。在育苗移栽条件下,咪鲜胺常规浓度浸种已不能有效控制水稻恶苗病的发生。田间小区试验证明,氰烯菌酯等可作为治理恶苗病菌对咪鲜胺抗性的有效药剂。

Fusarium monilifore in Jiangsu province had serious resistance to Prochloraz, its resistant frequency has reached 82. 14%, and most of these strains were middle - level resistant to Prochloraz. Under the seedling transplanting conditions, using conventional concentration of Prochloraz to soak rice seeds could not effectively control the occurrence of rice bakanae disease. The resuits of field plot test proved that JS399 - 19 could be chosen as the effective replacement pesticide for managing the resistance of Fusarium monilifore to Prochloraz.