浙江农林大学学报2017，Vol.34Issue(3)：449-458,10.DOI:10.11833/j.issn.2095-0756.2017.03.010
底部渗灌下容器类型及规格对油松根系结构的影响
Sub-irrigation with different container types and sizes for containerized root growth of Pinus tabuliformis seedlings
摘要
Abstract
An experiment was conducted to study the effect of sub-irrigation with different container types and sizes on root morphology and physiological indexes as well as water-use efficiency for containerized Pinus tabu-liformis seedlings. A nested experimental design with treatments of two sizes of hard plastic containers (3.8 cm×14.0 cm and 3.8 cm × 14.0 cm), two sizes of non-woven fabric containers (4.5 cm×10.0 cm and 4.5 cm× 15.0 cm), and two sizes of black plastic containers (10.0 cm×10.0 cm and 10.0 cm×15.0 cm) was conducted. Results showed that different container types were significantly different for various indexes of seedling roots (P<0.05) and the influence of root mass quality (P<0.05). The taproot length of containerized P. tabuliformis seedlings cultivated in the hard plastic container was 15.56 cm; whereas, the black plastic container was 23.93 cm, which was 1.5 times of the length of the long container. The taproot dry weights for hard plastic containers (0.15 g) and black plastic containers (0.17 g) were not significantly different (P<0.05), but both were sig-nificantly greater (P<0.05) than the non-woven containers (0.13 g). The proportion of fine roots cultivated by hard long plastic containers was 71% (length), 52% (surface area), and 29% (volume), respectively. The hard plastic containers were significantly higher (P<0.05) than the other two types of containers for accumu-lation of root nitrogen, phosphorus, and potassium (NPK). Meanwhile, water consumption of hard plastic con-tainers was only 391.95 mL per plant. In summary, sub-irrigation with long, hard plastic containers (3.80 cm × 21.00 cm), having more developed fine roots that could absorb nutrients, was most conducive for containerized P. tabuliformis seedlings, and thereby could improve survival.关键词
森林培育学/底部渗灌/容器类型/容器规格/油松/根系Key words
silviculture/sub-irrigation/container type/container size/Pinus tabuliformis/root system分类
农业科技引用本文复制引用
滕飞,刘勇,王琰,胡嘉伟,孙巧玉,万芳芳,张劲..底部渗灌下容器类型及规格对油松根系结构的影响[J].浙江农林大学学报,2017,34(3):449-458,10.基金项目
国家林业局引进国际先进农业科学技术计划("948" 计划)项目(2012-4-66) （"948" 计划）
