Abstract: This paper studied the differences of the diversity,abundance and evenness of arthropod community and sub-community in cotton field among treatments haloxyfork (A),paraquat (B) and contrast (CK).The results showed that in the diversity of phytophagous subcommunity,t _A-CK=3.099 andt_B-CK =2.449 (t>t_0.05=2.228),the difference being significant,and in the diversity of predatory subcommunity,t_A-B=2.260 and t_A-CK=2.377 (t>t _0.05=2.228),the difference being also significant.In the arthropod community and subcommunity,no significant difference was found for A-CK,B-CK and A-B.The abundance of arthropod community t_A-CK=4.359,and that of phytophagous sub-community t_A-CK=2.963,the effect being all significant (t>t_0.05=2.228).No significant difference was found in the evenness of arthropod community and sub-community for A-B,A-CK and B-CK.The biodiversity had the same change trend for treatments haloxyforR (A) paraquat (B) and contrast (CK).

Key words: Lead, Uptake, Distribution, Rice (Oryza sativa L.)