关键词: 黄瓜, 氰氨化钙, 茄病镰刀菌, 防治效果, Real-time PCR, 动态监测

Abstract:

This paper reported the effects of calcium cyanamide（CaCN2） on control of cucumber
root rot caused by Fusarium solani. Through the examination of disease control effectiveness，plant growth
and other indices，we evaluated the antimicrobial effects of CaCN2 on F. solani in soil at different doses
and different treatment periods by real-time PCR. The minimal detectable concentration of 1 × 101
dRn · g-1 soil was established to monitor the population of F. solani. The results showed that CaCN2
reached its best inhibitory effects on F. solani at the dose of 120 g · m-2. In disinfection period，the
population of pathogen greatly reduced within 3 days，and little pathogen could be detectable at the 9th day.
In plant growing period，the population of this pathogen recovered slowly，and the control efficiency could
reach 66.56%–74.41%.

Key words: cucumber, calcium cyanamide, Fusarium solani, control efficiency, real-time PCR, dynamic monitoring