研究制定出青杨虎天牛的防治指标，为科学合理、经济有效地治理该虫提供了理论依据。
The research has provided the prevention standards, providing the theory basis for resolving the problem of the pest in scientific, proper, economical and effective ways.
单宁含量与青杨脊虎天牛虫口密度之间存在比较明显的负相关性。
Negative correlation between tannin content and larvae density of X. rusticus was obvious.
单宁含量与青杨脊虎天牛虫口密度之间存在比较明显的负相关性。
Negative correlation between tannin content and larvae density of X. rusticus was obvious.
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