苎麻扦插苗特征对其低位分枝扦插苗繁育的影响

Effect of Cutting Characters to Cultivation on Cutting Plant for Low Branches of Ramie

为研究苎麻低位分枝扦插苗特性对扦插苗成苗率及麻苗素质的影响,以期获得苎麻低位分枝扦插苗繁育的最佳方式。以‘中苎1号’、‘湘苎3号’、Tri-1和新品系R0574个苎麻品种(系)为材料,通过苎麻扦插苗特性(插条粗细、插条长度、插条留叶数、扦插深度、扦插密度)对其低位分枝扦插苗繁育的成苗率及麻苗素质(单株根干重、主茎高度增加量、单株平均分枝数、最低分枝位、最高分枝位和分枝位长)的影响进行研究。试验获得了当前苎麻低位分枝扦插苗繁育的最佳方式:中等粗度(茎基部粗0.6cm)的插条、5～10cm的插条长度、4片的插条留叶数、1.5～3cm的扦插深度和10cm×10cm(即100株/m2)的扦插密度有利于苎麻低位分枝苗成苗率及麻苗素质的提高。不同的苎麻扦插苗特性对其低位分枝扦插苗成苗率及麻苗素质有重要影响。

In order to study on the effect of cutting characters to cultivate on cutting plant for low branches of ramie,to obtain the best cultivation pattern.With four ramie varieties of ＇ Zhongzhu1 ＇,＇ Xiangzhu3 ＇,Tris-l and the new strain R057 as materials,effect of cutting characters（cutting diameter,cutting length,cutting leaf numbers,cutting depth and cutting density） to survival rate and qualities（root dry weight per plant,stem height increment,branch numbers per plant,minimum and maximum branch bit length and length of branch location） of cutting plant for low branches of ramie were studied.The results showed that the best cultivation method was 0.6 cm cutting diameter,5-10 cm cutting length,about 4 cutting leaf numbers,1.5-3 cm cutting depth and 100 plant per square cutting density had higher seedling survival rate and better quality of ramie seedling.The different cutting characters have important effect to seedling survival rate and quality cutting plant for low branches of ramie.