河南农业科学2011，Vol.40Issue(8)：149-152,155,5.
伊乐藻与狐尾藻、苦草和金鱼藻的竞争研究
Research on Competition of Elodea nuttallii with Myrioph yllum verticillatum , Vallisneria natans and Ceratoph yllum demersum
摘要
Abstract
Four submerged macrophytes,Elodea nuttallii fMyriophyllum verticillatum ,Vallisneria natans and Ceratophyllum demersum ,were planted to observe the growth potentials and competitive abilities in outdoor 2m×2m pools. The areas of every species were 1. 08 m2. Results showed that from June to August, Elodea nuttallii grew fastest and its expansion ability was strongest. Its distribution area was 3. 69 m2 and the quantity proportion reached highest, 76. 59% in June. From July to September, Myriophyllum verticillatum had the advantage of canopy position, and floated on the surface. It could make full use of sunshine and its area reached 2. 34 m2, while its quantity proportion still increased, and reached the highest of 48. 99% in October. At this period, Vallisneria natans grew in the middle and lower layer of the water body, meanwhile Elodea nuttallii degenerated because of heat and the lowest area reduced to 1. 26 m2. In autumn-winter and spring, because Elodea nuttallii had strong chillness-tolerance, its area increased to 3. 20m2,which made it possess competition advantage in time and space, and directly affected competition pattern among the four plants. Overall, Elodea nuttallii occupied a distinct advantage in competition with native species,which should be paid attention to when introduced in northernChina.关键词
伊乐藻/狐尾藻/金鱼藻/苦草/竞争力Key words
Elodea nuitallii/ Myriophyllum verticillatum / Vallisneria natans / Ceratophyllum demersurn/ Competition ability分类
生物学引用本文复制引用
段德龙,于金金,杨静,胡倩如,马帅,任韶霞,马剑敏..伊乐藻与狐尾藻、苦草和金鱼藻的竞争研究[J].河南农业科学,2011,40(8):149-152,155,5.基金项目
国家水体污染控制与治理科技重大专项(2009ZX07106-002-004) （2009ZX07106-002-004）
河南师范大学大学生创新性实验计划 （）
河南师范大学(国家级)实验教学示范中心大学生创新性实验计划项目 （国家级）
