摘要
为明确马铃薯晚疫病CARAH预警模型在四川春马铃薯上的适用性,选择在四川不同海拔高度的马铃薯种植基地运用CARAH预警模型监测马铃薯晚疫病的发生和进行防控指导。结果表明,海拔高度越高,马铃薯晚疫病侵染程度越低,海拔3500 m以上时,主要以轻度侵染为主,海拔3500 m以下时,主要以中度和重度侵染为主。不同品种出现中心病株时的马铃薯晚疫病侵染循环代数不同,相同品种在不同地区出现马铃薯晚疫病中心病株时所处的侵染循环有所差别,可能与不同地区马铃薯晚疫病菌致病力存在差异有关。利用马铃薯晚疫病CARAH预警模型指导药剂防治,5种药剂仍表现出较高的防治效果,且不存在显著性差异。
To clarify the applicability of CARAH warning model against potato late blight in Sichuan spring potato,CARAH warning model was used to monitor occurrence of potato late blight and provide control measures in different altitudes in Sichuan.The results showed that the higher the altitude,the lower infection degree of potato late blight.The major infection degree was mild when the altitude was more than 3500 meters above the sea level,while the major infection degrees were moderate and severe when the altitude was less than 3500 meters above the sea level.Concerning the primarily infected plants,different varieties had different infection cycles of potato late blight,and the same variety at different sites had different infection cycles too,which might be related to the difference of Phytophthora infestans in different sites.Five fungicides showed good control effects on potato late blight under CARAH warning and had no significant difference.
出处
《中国农学通报》
2017年第4期136-141,共6页
Chinese Agricultural Science Bulletin
基金
国家公益性行业(农业)科技"西南丘陵旱地粮油作物节水节肥节药综合技术集成与示范"(201503127)
国家农业产业技术体系四川薯类创新团队项目(川农函[2014]91号)
四川省农业科学院优秀论文基金"四川马铃薯晚疫病菌对三种杀菌剂敏感基线的建立及交互抗性研究"(2014LWJJ-004)
