摘要： 越冬是观赏草容器苗生产的关键环节，选择北京地区有代表性的5种观赏草，研究了基质和覆盖对其容器苗越冬的影响。试验结果表明，草炭改善了基质的物理性质，随着草炭含量增加，基质的含水量、田间持水量和孔隙度升高，容重降低。覆盖有效提高了基质的含水量，使观赏草容器苗提前萌芽，促进效果从大到小依次为塑料、覆膜无纺布、无纺布。5种观赏草的耐寒性从强到弱为拂子茅、狼尾草、野古草和须芒草、细叶芒。拂子茅、狼尾草、野古草和须芒草的容器苗不需覆盖可越冬，基质对其萌芽没有明显影响。对于耐寒性较差的细叶芒，基质影响裸露容器苗的越冬萌芽率，采取园土与草炭同体积配制的基质有利于细叶芒种苗越冬。细叶芒的容器苗需要采取覆盖防寒措施。因为揭开塑料后萌出的叶片可能凋萎，建议采取覆膜无纺布或无纺布作为覆盖材料。
关键词:
野古草,
狼尾草,
拂子茅,
须芒草,
细叶芒,
草炭,
萌芽,
耐寒
Abstract: Ornamental grasses are a kind of new landscape plant. Recently lots of ornamental grasses cultivarshave been introduced and developed for greening. Winter survival is an important sector for production of ornamentalgrasses container seedlings. Five representative ornamental grasses of Beijing area are singled to study the effect ofsubstrates and covering nn winter survival of their container seedlings. Results showed that peat improved the physicalcharacteristics of substrates.
Key words:
Aruudiuella hirta vli.ccnn,thu.cPeuuisetum,
Sprouting,
alopecuroides,
Calamarostis brachytricha
中图分类号:
袁小环, 滕文军, 杨学军, 武菊英. 基质和覆盖对观赏草容器苗越冬的影响[J]. 华北农学报, 2011, 26(1): 172-177. doi: 10.7668/hbnxb.2011.01.035.
YUAN Xiao-huan, TENG Wen-jun, YANG Xue-jun, WU Ju-ying. Effect of Substrates and Covering on Winter Survival of Ornamental Grasses Container Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(1): 172-177. doi: 10.7668/hbnxb.2011.01.035.