野生八月瓜扦插繁殖试验

Cutting propagation research of Holboellia latifolia

通过3水平4因素L9(34)正交试验设计,以八月瓜(Holboellia latifolia)为试验材料,研究枝条年龄、ABT2号生根粉质量分数、扦插基质、扦插季节等因素对八月瓜扦插生长情况的影响。结果表明,成活率最高的是1年生枝条,平均成活率为82.33%,成活所需时间最短(平均为51 d);生长最好的是多年生枝条,扦插6个月后成活苗木的长度平均为188.33 cm。在昆明及其附近地区,利用八月瓜枝条扦插育苗,最好在秋季,插穗采用1年生或多年生枝条,用200×10^(-6)的ABT2号生根粉溶液处理3 h,在粗沙床上扦插,其成活率可逾80%,且成活所需时间最短,成活苗木生长最快,可有效提高苗木的生长质量。

By orthogonal design of L9(34),the effects of shoot age,ABT2 rooting powder concentration,cutting substrate and cutting season were studied on the cuttings of Holboellia latifolia.The results showed that the highest survival could get on one-year-old shoots,with 82.33%on average,about 51 d(shortest time),required to survive after cutting.The best length growth occurred on the perennial shoots in 6 months after cutting,with 188.33 cm on average.By comparing various factors,we found that,in Kunming and the surrounding area,using one-year-old shoots as cuttage,soaked in 200×10^(-6) ABT2 rooting powder solution for 3 hours in advance,and then taking coarse sand as substrate in autumn,optimal cutting propagation of H.latifolia could be obtained,and the survival could exceed 80%.