Abstract: Atmospheric moisture content is an important index affecting the quality and economic efficiency of grapevine in China. With the consideration of our climate characteristics and grapevine growth needs, and based on the comparison and analysis of several atmospheric moisture content indexes, the authors considered that the dryness index (DI=ET_C/P) in grapevine growth season (April 1-September 30) could be a proper atmospheric moisture content index for the climatic zoning of grapevine cultivation in China. It was suggested that the areas with DI<1.0, 1.0≤DI≤1.6, 1.6 as unsuitable economical cultivation, general cultivation, best cultivation, and better cultivation with irrigation, respectively.

Key words: Liriomyza sativae, Parasitoids, Life table, Controlling effect