1. College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
2. Shaanxi Research Center of Biopesticide Engineering & Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
3. Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China