The plant height and the number of leaves of one-year-old ginkgo (Ginkgo bibola L) seedlings hadbeen significantly increased as treated with 80 mg/kg 802, and treated with 50 mg/kg Aiduoshou and 70 mg/kg Yemianbao, the plant height and the mumber of leaves had been notable incraeased, respectively. When three-year-ofd grafting plants were treated with 80 mg/kg 802, effccts of irrigating root were better thanthose of spray-ing leaves. The negative effect of the diameter of stem appeared only a few treatments...
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