Title: Research on the Morphogenesis and Hazard of Alien Species Bidens pilosa L.in Changde City
Abstract:[Objective] The study aimed to investigate the morphological characteristics of alien species Bidens pilosa L.in Changde City and its harm degree.[Method] The seedlings of 24 B.pilosa plants selected ...[Objective] The study aimed to investigate the morphological characteristics of alien species Bidens pilosa L.in Changde City and its harm degree.[Method] The seedlings of 24 B.pilosa plants selected in the field were transplanted and grown with any interference to observe the law of growth and development of B.pilosa.5 observing sites in Hucheng township of Wuling District,Changde City were selected to survey the harm status of B.pilosa.[Result]The morphological characteristics of B.pilosa were as follows: the plant height was as high as 258 cm with the daily increment of 2.69 cm in the fast growing date;The amount of the primary branches was as most as 27 pairs with a pair occurred every 5 d in the fast growing date;The daily increment of the length of the primary branch was 1.63 cm in the fast growing date;The length of the secondary branch was as high as 48 cm with the daily increment of 0.45 cm.Observation on the harm status of B.pilosa showed that the occurrence of B.pilosa in Hucheng township was 20% and the distribution and harmed area of B.pilosa in this district was not big,but the occurrence density of B.pilosa was higher in Hucheng Town where B.pilosa was occurred,so it should be timely controlled.[Conclusion] This study provided the scientific basis for the comprehensive control of B.pilosa.Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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