. Thomas [19 ] Salas [16 ], ( Geomet ridae) 100, . Haynes [7 ], Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved.

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1 CHIN ESE JOURNAL OF APPL IED ECOLO GY,Mar 2005,16 (3) , ,3 2 ( 1, ; 2, ; 3, ) (A) (B) (CK), ( H ) A2 CK t 31099,B2CK t 21449, t > t 0105 = 21228, ; ( H ) A2CK t 21377,A2B 21260, t > t 0105 = 21228, A2CK B2CK A2B A2CK t 41759, 41359, 21963, t > t 0105 = 21228, A CK ;, A B A2CK B CK A B A B CK (2005) Q A Effects of herbicides on diversity indices of cotton f ield arthropod community WAN G Xiangyang,ZOU Yun2 ding,men G Qinglei, ZHAN G Bingwang ( A nhui A gricultural U niversity, Hef ei ) 2Chin J A ppl Ecol,2005,16 (3) : This paper studied the differences of the diversity,abundance and evenness of arthropod community and sub2com2 munity in cotton field among treatments haloxyfor2k (A),paraquat (B) and contrast (CK) The results showed that in the diversity of phytophagous sub2community, t A - CK = and t B - CK = ( t > t 0 05 = 21228), the difference being significant,and in the diversity of predatory sub2community, t A - B = and t A - CK = ( t > t 0 05 = 21228),the difference being also significant In the arthropod community and sub2communi2 ty,no significant difference was found for A2CK,B2CK and A2B The abundance of arthropod community t A - CK = 4 359,and that of phytophagous sub2community t A - CK = 2 963,the effect being all significant ( t > t 0 05 = 21228) No significant difference was found in the evenness of arthropod community and sub2community for A2 B,A2CK and B2CK The biodiversity had the same change trend for treatments haloxyfor2r (A) paraquat (B) and contrast (CK) Key words Cotton field, Herbicide, Arthropod community, Diversity index 1, Thomas [19 ] Salas [16 ], [2,5,12,13,21,25,26,28 ], 100, ( Geomet ridae), 20 70, [17, ],, hm 2, hm [20 ],,, 40 ; [22 ], 53 % 18 [14 ], [15 ],, Haynes [7 ],, Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved,, 3 ( ) ,

2 3 : 515 [1 ] H = - S P i log 2 P i i =, 1, N i i, N,, 76 9 % 4619 % [23 ] P i = N i / N i, S, [8 11 ],, Pielou [4 6 ] : [27 ] J = H / H max = H / log 2 S, DPS, [18 ] ,, 11 ( Pisum satium), 700 m 2, , Simpson, 40,5 20, Shannon2Winner H hm > 20 % ( Paraquat,, > ; ) ml hm % (Haloxyfor2R,, > > ) 450 ml hm , 9, 70 m 2 (7 m 10 m) 6 > , > 3,, 5 kg 7 d(6 17 ), 7 d 1, 8 > > > 26, 11 5, > > ; 6 1 m 2, > > > > > ; >,, 212 > > > Simpson Shannon2Winner > [ 3,9,18 ], D = 1 - S N i ( N i - 1),, i =1 N ( N - 1) 1 t Table 1 Diversity index and t2tested of arthropod community observed in treated plots ( eleven averages) Community type A Diversity index B CK A - CK t t2tested D H D H D H D H D H D H : Community on ground ; Phytophagous sub2community on ground ; Predatory sub2com2 munity on ground ; Community on plants ; Phytophagous sub2community on plants ; Predatory sub2community on plants A : Paraquat ;B : Haloxyfor2R ;CK: Control 3 P < 0105 ; 3 3 P < 0101 df = 10, t 0 05 = 21228, t 0101 = The same below B - CK A - B Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved

3 t,, ;, D, H, ; CK H ;, D H,,,,,,,3 312, [7,8 ] 2,3,3, 313, ; 1,3, ;, ; ( 5 ),, ;,, 3, ;, > (8 26 ) ;, > >, 3 ; >, > 2 2 d >, > ; 2 > > ;, 3 > >,, 2, 2 ( S) ( J ) t Table 2 Relative abundance,eveaness index and t2tested of arthropod community in treated plots ( eleven averages) Community type A Index B CK A - CK t t2tested B - CK A - B Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved

4 3 : ( H ) Fig 1 Dynamic of diversity index of arthropod community in treated plots a) Total community on cotton ;b) Phytophagous arthropod sub2community on cotton ;c) Predatory arthropod sub2community on cotton ;d) Total community on ground ;e) Phytophagous arthropod sub2community on ground ;f) Predatory arthropod sub2community on ground 1) Paraquat ;2) Haloxfor2R ;3) Control, 7,, 5 d,,,, ;, 7, 2,3, 3, 8 ;, 8 ; ments of community diversity and their application Acta Ent Si n ( ),24 (1) :28 33 (in 11 Luo Z2Y( ) 1982 Diversity analysis of arthropoda commu2 1 Buntin GD,Hargrove WL,Mccracken DV 1995 Population of fo2 liage2inhabiting arthropods on soybean with reduced tillage and her2 bicide USE A gron J,87 (5) : Cheng HH,Hanlon JJ 1988 Residual activity of insecticides applied on tobacco for green peach aphid control Tob Sci,32 : Ding Y2Q ( ) 1994 Entomo2mathematical Ecology Beijing : Science Press (in 4 Gao B2J ( ), Zhang Z2Z( ),Li Z2Y( ), et al 1992 Studied on the influence of the closed forest on the structure diversity and stability of insect community Acta Ecol Si n ( ),12 (1) :1 7 (in 5 Geng J2H( ),Shen Z2R( ) 2003 Biodiversity in field ecosystems and integrated pest management Plant Prot Technol Ext ( ),23 (11) :30 32 (in 6 Han B2Y( ),Jiang C2J ( ),Li Z2M ( ), et al 2001 Components of arthropod communities in tea gardens with four different cultivation types Acta Ecol Si n ( ),21 (4) : (in 7 Haynes KY 1988 Sublethal effects of neurotoxic insecticides on in2 sect behavior A nn Rev Ent,33 : Hou Y2M ( ),Pang X2F( ),Liang G2W ( ), et al 2001 Effect of chemical insecticides on the diversity of arthro2 pods in vegetable fields Acta Ecol Si n ( ),21 (8) : (in 9 Jin C2X( ),Wu Y( ),Wang D2L ( ) 1990 Di2 versity of arthropod communities in paddy fields Acta Ent Si n ( ),33 (3) : (in 10 Jin C2X( ),Wu Y( ) 1981 A study on the measure2 nity in cotton fields of Sheshan districted and diversity effect made by inseticides Acta Ecol Si n ( ),2 (3) : (in Chi2 nese) 12 Miao Y( ), Zou Y2D ( ), Sun S2J ( ), et al 2002 Dynamics of predatory natural enemy community in cotton fields Chi n J A ppl Ecol ( ),13 (11) : (in Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved 13 Pang X2F( ),Zhang M2X( ),Hou Y2M ( ), et al 2000 Evaluation of plant protectants against pest insects Chin J

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