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怎样放养白蜡虫

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Abstract: <正> 白蜡虫是以植物为寄主的寄生昆虫。放养白蜡虫首先要培育寄主树。幼树定植后第二年春,在离地1米处打顶,选留3—5个一级侧枝。第三年春,在一级侧枝上0.5米处剪枝,选留3—5个第二级侧枝。以后,在第二级侧枝上培育出的嫩壮枝条,就可放养白蜡虫。寄主树要轮放;老树要复壮。 
  • Series:

    (A) Mathematics/ Physics/ Mechanics/ Astronomy; (D) Agriculture

  • Subject:

    Silkworm and Honeybee, Wild Animal Protection

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