多菌灵15%+福美双15%可湿性粉剂对九重葛插穗生长的影响

Effect of 15% Carbendazim and 15% Thiram WP on the Growth of Softwood Cutting of Bougainvillea spectabilis Willd

用多菌灵15％＋福美双15％可湿性粉剂配制1．00～10．00g／L10个不同浓度系列，对九重葛插穗进行3h浸泡处理后扦插试验。结果表明，各处理中最佳的插穗平均生根数、根长、根直径、叶片数、新枝数、新枝长分别为34．2片、25．28mm、1.16mm、39条、3．8条、141．6mm。最高成活率达到100％，所测生长指标与对照组的差异极显著（P〈0．01）。处理剂量在1．00～2．50g／L，插穗生根数、成活率、根长、根径、新叶数、新枝数和新枝长均与处理剂量的关系呈二次曲线模型（R^2〉0．94）。结果分析显示，最佳处理的理论剂量为1．82g／L。

The experiment in Cuttage of Bougainvillea spectabilis Willd was conducted with the treatment of 15 % Carbendazim ＋ 15 % Thirarn WP with the different concentrations from 1.00 g/L to 10.00 g/L for 3 h.The results showed that the optimal evenness of ten treatments was roots of cutting, 34. 2; root length, 25.28 mm; root diameter, 1.16 mm; new leaf of every cutting, 39; new branch, 3.8; new branch length, 141.6 mm and the highest cuttage survival rotes were 100 %. The difference were significant between the treatment and control groups（ P 〈 0.01）. The relationship met the Quadratic model between rooting, survival rate, root length, root diameter, new leaf of every cutting, new branch, new branch length and dose-uslng during the treatment concentrations from 1.00 g/L to 2.50 g/L（R^2 〉 0.94）.The analysis of test results indicated that the optimal treatment concentration for B. spectabilis Willd was 1.82 g/L.