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广西园林菟丝子发生危害情况调查与分析
作者: 马跃峰1  郭成林1  马永林1  覃建林1 *  陆荣生1  杜晓莉1  黄旭光2  
罗恩波2
  陆 仟2  李 刚2  韦路易2  杨思霞2  
单位: (1 广西农业科学院 植物保护研究所  南宁 530007;2 南宁市绿化工程管理处  南宁 530011 )  
关键词: 园林植物  菟丝子  分布  寄主  感染率  危害指数  广西  
分类号:S453
出版年,卷(期):页码:2013 ,44 ( 12 ): 页码:2001-2006
摘要:

【Objective】The garden plant species, dodder hosts, dodder species and distribution were investigated in Guangxi to find out the occurrence regulation for future dodder prevention and control. 【Method】From 2011 to 2013, every April to October, 16 representative cities were chosen with Nanning as the center, garden trees and groundcover plants infected with dodder were investigated by recording dodder kinds, growth stage, phytology traits and situation, as well as calculating infection rate and hazard index. 【Result】The results showed that there were 88 garden plant species in Guangxi, 62 dodder hosts (Incidence rate: 70.45%), belonging to 39 families and 51 genera, among which Moraceae was the most (6 cultivars) followed by Leguminosae and Euphorbiaceae (5 cultivars). The dodder species were mainly Japanese dodder, Chinese dodder , Cuscuta reflexa and no root cane distributed in 16, 9, 7 and 5 cities (counties), respectively. 38, 20, 15 and 11 hosts had the proportion of 61.29%, 32.25%, 24.19% and 17.74%. Nanning and Fangchenggang had the most dodder species with the presence of all the major kinds. Chinese dodder mainly endangered seed propagation, which affected buds at the late stage of every March. The other three kinds predominantly affected vine breeding, which started to grow in early April and matured in November. Hazard index order was Bayuegui, Fujian tea, dragon boat flower, Huangsumei, Flocculus banyan and African jasmine. Their hazard index was 5.48-4.01 indicating they belonged to the susceptible trees. 【Conclusion 】There were 88 species landscape plants identified in Guangxi with 62 dodder hosts belonging to 39 families and 51 genera. In Guangxi, there were Japanese dodder, Chinese dodder, Cuscuta reflexa and no root cane. Japanese dodder was the dominant type and the key control object. Every April to October was the main infection period, when proper prevention measures should be taken.

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