species composition of other major pests and dominant natural enemies. 3 Species richness in the upper and middle layers of tea bushes abundan

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1 * ** 1*** Empoasca vitis G the Aleurocanthus spiniferus Quaintance Similarity and disparity of arthropod community compositions among ten tea-intercropping plantations with different species of fruits in the Dongtingshan Mountains Taihu Lake JI Xiao-Ming 1 2 WANG Meng-Xin 1 JIANG Li-Rong ** HAN Bao-Yu 1*** 1. Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine China Jiliang University Hangzhou China 2. Bureau of Agriculture of Wuzhongqu District of Suzhou City Jiangsu Province Suzhou China Abstract In order to understand the effect of tea-fruit intercropping on the population density and spatial distribution patterns of arthropod communities ten types of tea-fruit intercropped plantations were investigated in the East Dongtingshan Mountains Taihu Lake during the summer July harvesting season of This mountain is the original production site of the famous tea Dongtingbiluochun and has a long history of tea and fruit intercropping. The same experimental design sampling the same ten types of tea-fruit intercropped plantations was also implemented in the West Dongtingshan Mountains Taihu Lake during the spring April harvesting season of Data on species composition and population densities of arthropods between the intercropped fruit trees at the upper middle and lower layers of tea bushes and on and below ground level were obtained from each experimental plot for both locations and study periods. Our data indicates that 1 Overall results from the two locations and sampling periods were virtually the same. 2 The tea green leafhopper Empoasca vitis G the and the citrus spiny whitefly Aleurocanthus spiniferus Quaintance were the most dominant pest species regardless of intercropping types and location there were no significant differences in the * Y FY ** 2010 *** han-insect@ 263. net

2 species composition of other major pests and dominant natural enemies. 3 Species richness in the upper and middle layers of tea bushes abundance total number of individuals dominated by Homopteran insects in the lower layer of tea bushes and the biodiversity index of the middle layer of tea bushes were higher than in the other layers. 4 Among different types of tea-fruit intercropped plantations tea-citrus and tea-chestnut plantations had a higher arthropod species richness whereas both species richness and overall arthropod abundance were lower in tea-japanese allspice plantations. This suggests that the rational intercropping of tea plants with fruit trees can increase general arthropod biodiversity including that of species that exist between intercropped fruit trees or on or below the ground. Intercropping may significantly affect arthropod community composition. Key words tea-fruit intercropping arthropods community composition biodiversity Taihu Lake Dongtingbiluochun tea > 667 m m 2 15 ~ km 10 1 m 1 m 0. 1 m 0. 1 m cm 50 cm m 10 cm 2 10 DPS

3 religiosa L. Syrphus corollae F. Cicindela chinensis De Dgeer Chrysopa sinica Tjeder Harmonia axyridis Pallas var. spectabilis Faldermann Pantala flavescens F. Orthetrum triangulare Selys Beauveria 18 bassiana Bals. Vuill. Aschersonia aleyrodis Webb. Entomophaga grylli 10 Fres. Batko Zoophthora radicans Bref. Batko Evarcha albaria L. Shannon-Wiener 1963 Koch Clubiona japonicola B senberg et Strand H' = - s PilnPi i = 1 Pi i Empoasca vitis G the Aleurocanthus spiniferus Quaintance % Tettigella viridis L Dialeurodes citri Ashmead Toxoptera aurantii Boyer Geisha distinetissima Walker Temnaspidiotus destructor Signoret Pseudaonidia duplex Cockerell Lygus lucorum Mayer-Dür Ectropis oblique Prout Thosea sinensis Walker Caloptilia theivora Walsingham 2 3 Chlorops sp. Acaphylla theae Watt 2 3 Oxya chinensis Thunberg Acrida cinerea Thunberg Holochlora japonica Brunner von Wattenwyl 3 Xanthopimpla - - punctata F. Charops bicolor 2 Szepligeti Aphidius sp Brachymeria lasus Walker Stethynium empoascae Subba Rao - Anicetus ohgushii Tachikawa Mantis 2 3 -

4 Fig. 1 Cluster analysis on arthropod communities in ten types of intercropping tea plantations in the east Dongtingshan mountains July ~ c The numerals from 1 to 10 in Fig. 1 stand for the types of tea plantations as those in Table 1. The same for Fig Fig. 2 Cluster analysis on arthropod communities in ten types of intercropping tea plantations in the west Dongtingshan mountains April b 2010a a Rothamsted - Samantha et al References Samantha M Cook SM Khan ZR Pickett JA The use of push-pull strategies in integrated pest management. Annu. Rev. Entomol Shannon CI Weiner W The Mathematical Theory of 1 d 10 Communication. University of Illinois Press Urbana 111. USA DPS

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211 better than those in the control group, with significant difference between two groups (P < 0.05). The ocular hypertension of patients in the cont

211 better than those in the control group, with significant difference between two groups (P < 0.05). The ocular hypertension of patients in the cont 210 毛果芸香碱联合拉坦前列素治疗原发性急性闭角型青光眼的疗效观察符元党 1, 郑振优 2, 林再雄 2, 周吉良 1. 昌江黎族自治县中西医结合医院, 海南昌江 572700 2. 海南医学院附属医院眼科, 海南海口 570100 1 摘要 : 目的探讨