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草业学报 ›› 2011, Vol. 20 ›› Issue (5): 231-236.

• 研究论文 • 上一篇    下一篇

常德市鸡眼草生物学特征及危害特性的研究

王云, 向群, 彭友林   

  1. 湖南文理学院生命科学院, 湖南 常德 415000
  • 出版日期:2011-10-20 发布日期:2011-10-20
  • 作者简介:王云(1974-),男,湖南澧县人,副教授,在读博士。
  • 基金资助:
    湖南省科技厅项目(06CK3049),常德市科技局项目(2008SK01)和湖南文理学院创新团队项目(05CX01)资助。

Study on biology characteristics and harmfulness of Kummerowia striata in Changde

WANG Yun, XIANG Qun, PENG You-lin   

  1. College of Life Science, Hunan Universty of Arts and Science, Changde 415000, China
  • Online:2011-10-20 Published:2011-10-20

摘要: 对常德市鸡眼草的生物学特征及危害特性进行了调查研究。结果表明, 鸡眼草垫状厚度最高(10.76±0.73) cm、最低(4.15±0.55) cm、平均(6.46±2.58) cm,主茎最长(22.33±3.31) cm、最短(9.02±0.74) cm、平均(12.07±4.62) cm, 分枝数最多(61±18.16) 个、最少(14±4.16) 个、平均(27±15.44) 个, 分枝最长(7.34±1.26) cm、最短(4.31±0.77) cm、平均(5.29±1.25) cm,种子数最多(334±138.06) 粒、最少(51±24.24) 粒、平均(120±97.83) 粒, 根分布面积最大(1587.79±979.15) cm2、最少(101.65±32.67) cm2、平均(352.68±595.96) cm2,根分枝最长(6.78±2.08) cm、最短(3.35±0.90) cm、平均(4.28±1.38) cm, 根分枝数最多(15±6.96) 个、最少(7±0.58) 个、平均(10±3.24) 个, 覆盖度最大(23.89±11.099)%、 最小(2.44±0.96)%、 平均(6.71±7.86)%, 密度最大(6±2.49) 株/m2、最小(4±1.00) 株/m2、平均(5±1.58) 株/m2, 鸡眼草伴生植物较少, 且伴生植物密度、覆盖度均较低。

Abstract: The biology characteristics and harmfulness of Kummerowia striata were investigated. The highest plant height was (10.76±0.73) cm, the lowest (4.15±0.55) cm, and the average (6.46±2.58) cm. The longest main stem length was (22.33±3.31) cm, the shortest (9.02±0.74) cm and the average (12.07±4.61) cm. The maximum winding number was 61±18.16, the least 14±4.16 and the average 27±15.44. The longest branch length was (7.34±1.26) cm, the shortest (4.31±0.77) cm and the average (5.29±1.25) cm. The maximum number of seeds was 334±138.06, the least 51±24.24, and the average 120±97.83. The maximum root distribution area was (1 587.79±979.15) cm2, the minimum (101.65±32.67) cm2, and the average (352.68±595.96) cm2. The longest root branch was (6.78±2.08) cm, the shortest (3.35±0.90) cm and the average (4.28±1.38) cm. The most root branches were 15±6.96, the least 7±0.58 and the average 10±3.24. The maximum plant coverage was (23.89±11.09)%, the minimum (2.44±0.96)% and the average (6.71±7.86)%. The maximum planting density was 6±2.49, the minimum 4±1.00, and the average 5±1.58. A few associated plants of K. striata with low density and coverage also occurred.

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