Abstract:
To protect and utilize natural enemies reasonably, spatial relationships between natural enemies and
Empoasca vitis,
Dialeurodes citri,
Scirtothrips dorsalis and
Toxopetera aurantii were investigated respectively in tea plantations in Qianshan, Anhui. The ranges of spatial dependence (RSDs) of these pests and their natural enemies were calculated by GIS and the spatial relationships among natural enemies and four pests were analyzed using grey relational analysis. The results showed that two main natural enemies (
Theridion octomaculatum and
Clubiona reichlini) had a close spatial following relationship with
Empoasca vitis. The synthetic results demonstrated that two natural enemies (
Theridion octomaculatum and
Erigonidium graminicolum) had a close sptial relationship with
Dialeurodes citri, while two main natural enemies of
Scirtothrips dorsalis were
Erigonidium graminicolum and
Theridion octomaculatum in spatial relationships. And the two close natural enemies of
Toxopetera aurantii were
Harmonia axyridis and
Erigonidium graminicolum in space.
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