根据当地主要病虫害的发生规律，以农业防治和生物防治为主体，化学防治中以使用无公害农药为主，实现苹果的优质、高产、高效生产。
According to the rules that insects and diseases appear in these area, we chiefly undertake agricultural and biological prevention and cure, and use biorational insecticide in che...
根据当地主要病虫害的发生规律，以农业防治和生物防治为主体，化学防治中以使用无公害农药为主，实现苹果的优质、高产、高效生产。
According to the rules that insects and diseases appear in these area, we chiefly undertake agricultural and biological prevention and cure, and use biorational insecticide in che...
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