应用舒根型容器与半轻型基质培育马尾松苗的研究

Study on Masson Pine′s Seedling Cultivation Using Root unfolding container and Half light medium

主要报道应用舒根型容器与半轻型基质，培育马尾松优质容器苗３ａ的研究结果。（１）舒根型容器培育苗木，根系顺导向槽往下伸展，不会形成卷曲根，并可通过空气自然截根，促使产生大量侧、须根，同时根系与基质紧密结合形成牢固的根团，有利于提高造林成活率。（２）两种舒根型容器相比较，以合式容器为优，苗高生长与苗株生物量要比管形容器分别大１２．８％和２４．６％，茎根比小，根系发达，苗木质量高。（３）在基质比较试验中，按苗木生长、根系数量、理化性能与保水供肥性能４项综合权衡，半轻型基质以２０％～４０％树皮粉、２０％～４０％锯木屑、１０％～２０％猪栏粪、３０％～４０％营养土、２％～３％钙镁磷肥的（体积）比例配制为最佳。

This paper reported mainly the research results of masson pine′s high quality container seedling cultivation of 3 years using root unfolding container and half light medium. (1) Seedling cultivation using root unfolding container could make root system extend along guiding trough instead of folding, promote side or thin root development by natural air root cutting,and increase plantation survival rate by tight combination of root system with medium and formation of solid root unit. (2) In comparison of two types of root unfolding container,box type container was better than pipe type contaner,with 12.8% and 24.6% of seedling height growth and biomass,less stem/root rate,stronger root system, and higher seedling quality. (3) In medium comparison test,by comprehensive index selection of seedling growth, root quantity,physical and chemical charactertics,and ability of water keeping and nutrient supplying. The superior half light medium was mixed by 20%～40% bark powder,20%～40% sawdust,10%～20% pig manure,30%～40% nutrient soil and 2%～3% phosphorus fertilizer.