Abstract: 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.

Key words: Mid-eastern China, Landscape mapping, Land-use/cover dynamic analysis