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- Title
扶桑绵粉蚧在广西的发生为害情况调查.
- Authors
孟醒; 李金峰; 黄立飞; 姜建军; 杨朗; 周忠实; 桂富荣; 陈斌; 陈红松
- Abstract
【Objective】 Study on the occurrence and damage of Phenacoccus solenopsis Tinsley in Guangxi could provide fundamental information for effective control of P. solenopsis. 【Method】 According to the city map of Guangxi Zhuang Autonomous Region,five survey sites with Hibiscus rosa-sinensis green belt were randomly selected from the urban area of each city and the main districts(counties)around. In the H. rosa-sinensis green belt of each survey point,five 1 m×10 m squares were selected by the equidistant sampling method,and the number and damage degree of P. solenopsis on H. rosa-sinensis in each sample point was investigated. 【Result】 Among the 215 survey sites in 14 cities of Guangxi, 117 survey sites were without P. solenopsis,the infestation levels of 25 survey sites were grade 1,35 survey sites were grade 2,27 survey sites were grade 3 and 11 survey sites were grade 4. Among the 14 cities in Guangxi,except for Guilin, the remaining 13 cities were found P. solenopsis. Among them,Chongzuo,Fangchenggang,Wuzhou and Beihai were seriously damaged. The infection rate of H. rosa-sinensis in Chongzuo was 92.9%,and the the average population density was 2534.6 insects per plant. The infection rate of H. rosa-sinensis in Fangchenggang was 83.5%,and the the average population density was 2976.2 insects per plant. Hechi had the lowest infection rate except Guilin. The infection rate was only 5.6%,and the average population density was 27.6 insects per plant. Among all the survey sites,most of the insects and serious damages occurred in the vegetable market and the H. rosa-sinensis green belt near the residential community. 【Conclusion】 P. solenopsis has been successfully colonized and spread in many cities of Guangxi,and has been experiencing a disaster in Chongzuo and Fangchenggang. In order to avoid further spread and damage of P. solenopsis,it is necessary to strengthen the management of H. rosa-sinensis seedlings,cut off the source of infection,strengthen the detection of epidemic areas,prevent and control in time,and avoid the outbreak of disaster.
- Publication
Journal of Southern Agriculture, 2019, Vol 50, Issue 5, p1021
- ISSN
2095-1191
- Publication type
Article
- DOI
10.3969/j.issn.2095-1191.2019.05.15