It has been proved in practice that artificial reproduction of trichogramma is a safe, effective and economic method in control of corn borer.
利用赤眼蜂防治玉米螟是一项已被生产实践证明了的安全、有效、经济的生防措施。
It has been proved in practice that artificial reproduction of trichogramma is a safe, effective and economic method in control of corn borer.
利用赤眼蜂防治玉米螟是一项已被生产实践证明了的安全、有效、经济的生防措施。
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