grassland pest damage 草原鼠虫害
pest damage loss 危害损失
Pest Damage Index 危害指数
estimates of pest damage 虫害损失估计
damage pest 危险性害虫
Insect predators living in the mixed species plantations reduce pest damage.
并且生活在混合植被中的昆虫捕食者可以减轻害虫的危害。
Our technicians not only help you eliminate (reduce) pest infestation, but also provide you with professional advice, to help you radically reduce the pest damage to insufficient levels.
我们的技术人员不仅帮您消除（减轻）虫害的侵扰，还可为您提供专业的建议，帮您从根本上把虫害降低至不足以为害的水平。
The result showed the lamps could exactly forecast the occurrence period and amount of the pest and effectively control the damage caused by the pest.
的预测、预报和防治实验，能准确地预测松毛虫的发生期和发生量，并能有效控制松毛虫的危害。
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