“economic threshold”的概念、定义、翻译、参考文献-科学参考

单词	economic threshold
释义	economic threshold Encyclopedia 农学经济阈值释 economic threshold; ET经济阈值采用防治措施阻止害虫种群密度增长，以免达到经济损害允许水平的虫口密度。又称防治指标、防治阈限。
随便看	plant zinc deficiency symptom plant zinc nutrition plant zinc toxicity Plant，Soil and Environment Planudes planula planula larva planum Planum Australe Planum Boreum plan view pattern control Plan Voisin p Laplace equation p-Laplace equation p Laplace evolution equation p-Laplace evolution equation plaque plaque couplet in landscape garden plaque forming cell plaque imaging agent plaque mutants plaque rupture Plaskett crater Plaskett's star plasma

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