Of course, biological control agents can safely be released only if it can be verified that they feed solely on the target weed.
当然,只有能够证明它们仅以目标杂草为食,生物控制剂才能安全释放。
2
CIBC successfully used a seed-feeding weevil, native to Mexico, to control the obnoxious parthenium weed, known to exert devious influence on agriculture and human health in both India and Australia.