【摘要】 在多数母树已经结实的4年生杉木种子园中,用5种剂量的赤霉素GA₃+CMC胶状溶液,分别在3种不同时间注射不结实的嫁接杉木。结果表明:每株注射2.5～5.0mgGA₃效果显著;10mg/株效果极显著,增产球果数达1～9倍。处理时间以7月上旬～7月中旬为好,6月上旬较差。更多还原

【Abstract】 In a four’s seedorchard of Cunninghamia lanceolata, which has fruited for most grafting trees, five dosages of GA3 with CMC paste are used on the unfruited trees in three different time. The facts show that 2.5～5.0 mg/tree treatments have significant effects and 10.0 mg/tree has a extremely significant effect. The cone numbers of trees treated are 2～10 times over that of check. The suitable time for treatment is early July or middle July.更多还原