A study of seedling stage and afforestion was carried out on thirty provenances of Platycladus orientalis (L).Franco introduced from its natural distribution region to choose fine seed sources, which are adapt to grow on arid, infertile limestone soil in Chongqing area. Analyses of variance show that \%Platycladus orientalis (L).Franco are adapt to grow on arid limestone soil, but the growth of different seed sources shows significant difference.On the basis of comparison of adaptability,resistance and ...