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Position: Home > Articles > Application of the Niche Theory and Entropy Change Value to the Ecosystem of Citrus, Dialeurodes citri and Aschersonia ale yrodis Journal of Fujian Agriculture and Forestry University(Natural Science Edition) 1991 (4) 403-406

柑桔—粉虱—座壳孢菌系统的生态位和熵变值分析

作  者:
关雄;高日霞
单  位:
福建农学院植物保护系
关键词:
生态位;熵变值;柑桔粉虱;粉虱座壳孢菌
摘  要:
应用生态位及熵变值分析了柑桔园系统内某些物种之间的关系.当果园引入霍香蓟等绿肥植物后,境内树冠和地表温度下降0.4—0.7℃和0.3—0.5℃,相对湿度则分别提高2%—4%和2%—3%;土壤速效氮、磷、钾提高5.37%,33.69%和118.59%;熵变值为-924.85×10~6cal/kg;粉虱座壳孢菌寄生率增加184.4%.果园系统生产力大为提高,害虫也得到了自然抑制.
译  名:
Application of the Niche Theory and Entropy Change Value to the Ecosystem of Citrus, Dialeurodes citri and Aschersonia ale yrodis
作  者:
Guan Xiong Gao Rixia (Dept. of Plant Protection, FAC, Fujian 350002)
关键词:
niche;;entropy change value;;Dialeurodes citri;;Aschersonia aleyrodis
摘  要:
Niche theory and entropy change value were applied to analyse ecosystem components of citrus orchards. After introducing Ageratum conyzoides L. and some other green manure crops the community structures and interspecific relations greatly changed. Temperatures decreased by 0.4-0.7℃ in canopy and 0.3-0.5℃ on soil surface but relative humidity increased by 2%-4% and 2%-3% respectively; available N, P, K increased by 5.37%, 33.69% and 118.59%; mean parasitic percentage of A. aleyrodis on D. citri increased by 184.4%; the entropy change value was -924.85×10~6cal/ kg. Systematic productivity of the orchards greatly increased and the pest was natually controlled.

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