提高马尾松扦插繁殖成活率研究

采用沙床和容器2种方法进行马尾松扦插繁育试验,选取珍珠岩、河沙及河沙+黄心土+草木灰混合进行不同基质扦插对比,在母树下部、中部及上部采集穗条扦插比较,生根剂不同浓度及处理方法进行扦插,研究表明:①以河沙、黄心土、草木灰混合或珍珠岩为基质进行容器扦插培育马尾松无性苗,其成活率和成苗率高,扦插苗生长快,起苗容易,苗木根系损伤小,造林成活率得到保证;②马尾松穗条扦插存在位置效应,母树中上部穗条与下部穗条扦插成活率差异显著,中上部穗条扦插成活率达90%以上;③用低浓度生根剂处理插条后蘸取含有相应浓度生根剂泥浆扦插,能大幅度提高马尾松穗条扦插成活率。

Studies of Improving Pinus massoniana Cuttage Propagation Survival Effect

The experimental research indicated the Pinus massoniana clonal seedling survial percent and plant percent were high by the seedling container cuttage culture with the mixture substrate of river sand,yellow-heart soil,and plant ash,or with the perlite substrate,the cutting seedling grew soon,lifting was easy,seedling root system was less damaged,the afforestation survival percent was guaranteed;Pinus massoniana cutting cuttage possessed the position effect,the difference between the cuttage survival percents with cuttings from upper-and lower-portion of mother tree was significant,the cuttage survival percent of cuttings from mid-and upperportion reached over 90%;the cutting was covered with the mud under relatively low concentration of rooting drug after it was treated with the drug,which could raise Pinus massoniana cutting cuttage survival percent on a large scale.