Abstract: The infection status of Tomato leaf curl virus in the early period of tomato planting in 18 winter greenhouses were studied, and the sampling survey of Bemisia tabaci was also conducted in 14 greenhouses. The results indicated that the spatial distribution patterns of Tomato leaf curl virus which was distributed as aggregation distribution was consistent to that of Bemisia tabaci. The Iwao m*-m models of the spatial distribution patterns of Tomato leaf curl virus and Bemisia tabaci were as follows: m*=－0.209060+1.3659m and m*=－0.299134+1.4171m. The sampling equation of tomato leaf curl virus disease and Bemisia tabaci were best fitted n=t²/D²(0.79094/m+0.3659) and n=t²/D²(0.79848/m+0.4171), respectively．

Key words: Tomato yellow leaf curl virus, Bemisia tabaci, spatial distribution patterns, sampling technique