林业科学2017，Vol.53Issue(6)：47-55,9.DOI:10.11707/j.1001-7488.20170606
容器类型和胚根短截对栓皮栎容器苗苗木质量及造林初期效果的影响
Combined Effects of Container Type and Radicle Pruning on Seedling Quality and Early Field Performance of Quercus variabilis Container Seedlings
摘要
Abstract
[Objective] Container type and radicle pruning have been individually proved to effectively regulate seedling quality.In current study,we examined whether the combination of these two approaches could yield a superior effects on seedling performance during nursery and field phases in order to provide reference for the container seedling cultivation.[Method] Quercus variabilis seeds with the radicle pruned (RP) or control (CK) were sown in two different container type (D40 and Slit).Root architecture,seedling growth,nutrient concentration and subsequent field performance of the seedlings were investigated.[Result] Container type and radicle pruning significantly interacted root architecture and nutrient concentration,the combination of D40-CK improved growth of roots with diameter < 2 mm,and increased total root surface area and volume while the combination of D40-RP increased K concentration,indicating the necessity of combining the two approaches.The main effects indicated that D40 treatment increased growth if roots with diameter for 2-5 mm and aboveground,but decreased R/S in the nursery.The D40 treatment promoted seedling height and RCD growth within the first year after outplanting.However,the promotion disappeared in the second year after outplanting.Radicle pruning treatment decreased growth of roots with diameter > 5 mm,seedling height,RCD and root dry mass of seedlings in the nursery.The pruning treatment still inhibited height and RCD growth of seedlings in the first year after outplanting.Radicle pruning treatment decreased survival but improved root growth and nutrient uptake in the second outplanting season.[Conclusion] Both the interactive and main effects of container type and radicle pruning on root architecture,seedling growth,nutrient status and early field performance indicated that it is necessary to combine the two approaches to improve seedling quality.The optimum combination of D40 container and non-radicle pruning (CK) was recommended for container seedling production of Q.variabilis with a dominant taproot.关键词
栓皮栎/容器类型/胚根短截/根系结构/造林效果Key words
Quercus variabilis/container type/radicle pruning/root architecture/field performance分类
农业科技引用本文复制引用
刘佳嘉,李国雷,刘勇,尚治国..容器类型和胚根短截对栓皮栎容器苗苗木质量及造林初期效果的影响[J].林业科学,2017,53(6):47-55,9.基金项目
"十二五"农村领域国家科技计划课题"高淀粉能源植物品种选育、栽培及液体生物燃料关键技术与示范(2015BAD15B01)" （2015BAD15B01）
国家自然科学基金项目"叶片性状和根系特性对氮贮存与内转移的作用机制研究(31670638)" （31670638）
北京市共建项目专项"北京乔木类乡土植物筛选及高效繁育技术(2016GJ-03-06)". （2016GJ-03-06）
