不同灌溉条件下棉叶螨的种群动态

Population dynamics of cotton spider mite(Tetranychus turkestani) under different irrigation systems.

研究了不同灌溉方式(滴灌和沟灌),以及在滴灌条件下,不同灌水量和不同灌水时期处理下,新疆棉花主要害螨——土耳其斯坦叶螨(Tetranychus turkestani)的发生动态。结果表明:不同的灌溉方式和不同灌水量都对棉叶螨的发生有一定的影响;沟灌棉田有利于棉叶螨的发生,滴灌棉田不利于棉叶螨的发生;滴灌条件下,水量过高或过低的棉田均有利于棉叶螨的发生,叶螨发生盛期早于常规水量棉田,数量也高于常规棉田叶螨数。不同灌水时期对棉叶螨的发生影响不大。

This paper studied the effects of drip- and furrow irrigation and of different irrigation amount and period under drip irrigation on the occurrence of cotton spider mite Tetranychus turkestani in Xinjiang cotton field. The results showed that both irrigation method and irrigation amount had definite effects on the T. turkestani occurrence. Furrow irrigation was favorable to the occurrence of T. turkestani, while drip irrigation was in adverse. Under drip irrigation, when the irrigation amount was much higher or lower than the normal, the occurrence of T. turkestani was promoted, the occurrence peak appeared earlier, and the individuals were more. Different drip irrigation period had no significant effects to the occurrence of T. turkestani.