以用一定浓度的苦楝果提取物处理的构树枝条作为天牛的食物 ,研究了其对桑天牛产卵及卵孵化的影响。在室温下用苦楝果提取物 5 0 0mg/kg处理枝条 ,处理组天牛 ( 7对 )在1 5天试验中 ,7对天牛日平均产卵量为 8.5 3± 2 .35个 ,而对照组 7对天牛日平均产卵量为1 5 .80± 0 .98个。经T检验处理组与对照组之间差异极显著。用 2 5 0、1 0 0 0、2 0 0 0mg/kg的苦楝果提取物处理枝条 ,在 1 5天试验中 ,7对天牛日平均产卵量分别为 8.0 6± 2 .90、6.73± 3.82、5 .2 0± 1 .74个 ,而对照组 7对天牛的日平均产卵量为 1 3.73± 2 .90个。经T检验它们与对照之间差异极显著。取食含苦楝果提取物 2 5 0、1 0 0 0、2 0 0 0mg/kg处理枝条后 ,天牛产的卵分别需经 1 2、1 5、1 9d达到其最终孵化率 94.2 1 %、87.1 2 %、43.5 8% ;而对照组 1 1d达到最终孵化率 99.5 0 %。并据上述结果提出并讨论了应用苦楝果提取物防治桑天牛的前景 To use a certain concentration of Melia azedarach tree branches treated branches of the beetle food, to study the mulberry day spawning and egg hatching. The branchlets were treated with 500 mg / kg of Melia azedarach fruit extract at room temperature. Seven days after treatment, the average number of eggs laid per day for 7 pairs of beetles was 8.53 ± 2.35 The average number of eggs laid on day 7 was 15.08 ± 0.98 in control group. The difference between T-test group and control group was significant. The branches were treated with 250ml of Melia azedarach extract at 250, 100, 200 and 200 mg / kg, respectively. The mean fecundity of 7 pairs of beetles on day 15 was 8.06 ± 2 .90,6.73 ± 3.82, 5 .2 ± 1 .74, while the average daily fecundity of 7 pairs of beetles in control group was 1 3.73 ± 2.90. There was a significant difference between them and the control by T test. After inoculating the branches of Melia azedarach treated with 250, 100, 0 and 200 mg / kg, the eggs of the beetles reached the final hatching rate of 94.2 1% after 1, 2, , 87.1 2%, 43.5 8%, while the control group reached the final hatching rate of 99.5% on the 11th day. According to the above results, the prospects of using Morus alba L. extract to control Morinda spp. Were discussed and discussed