| 赵雪晴，齐国君，赵秀兰，吕华，尹艳琼，李向永，李秋阳，谌爱东,2021,滇西南稻区白背飞虱种群特征及其关键影响因子[J].环境昆虫学报,(2):365-372 |
| 滇西南稻区白背飞虱种群特征及其关键影响因子 |
| Population characteristics and key factors influencing the abundance of Sogatella furcifera in Southwest Yunnan Province, China |
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| DOI： |
| 中文关键词: 滇西南 白背飞虱 种群特征 影响因子 |
| 英文关键词:Southwest Yunnan Sogatella furcifera population characteristics influencing factors |
| 基金项目:云南省重点研发计划（2019IB007）；广州市珠江科技新星专项（201806010013）；国家自然科学基金项目（31760536，31860504）；云南省创新团队培育对象；国家重点研发计划项目（2016YFE0117400） |
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| 中文摘要: |
| 为明确滇西南沧源县稻区白背飞虱 Sogatella furcifera 的种群发生特征及其影响因子，于2010-2019年通过灯诱监测和田间调查的方法，分析沧源县白背飞虱的越冬种群、灯诱种群及田间种群发生特征，并对白背飞虱种群数量的影响因素进行相关性分析。结果表明：（1）白背飞虱以成、若虫在再生稻、落粒稻上越冬，越冬虫量最高可达1 600头/667 m^2 ，越冬虫量大小与冬季极端最低温度呈显著正相关（ r =0.473）；（2）白背飞虱灯诱高峰主要集中在3月下旬至4月上旬、5月下旬至7月上旬以及9月，灯诱峰期和诱虫量在不同年份之间差异较大；随着白背飞虱不断迁入，田间白背飞虱种群呈增长趋势，一般于5月底至6月初田间种群数量最大，构成田间种群的危害高峰，而水稻抽穗之后，白背飞虱田间种群数量迅速下降，向外迁出，9月水稻进入成熟收割期，外地回迁的灯诱峰次虽虫量较大，但对当地水稻威胁较小；（3）沧源县白背飞虱田间最大虫量与5月累积灯诱虫量呈显著正相关（ r =0.670），与越冬虫量以及3、4月累积灯诱虫量无显著关系，5月累积灯诱量又与5月降雨存在显著正相关（ r =0.758），说明5月迁入虫源是影响白背飞虱种群为害的关键因素。明确滇西南稻区白背飞虱的种群发生特征及其影响因子，对当地白背飞虱的预测预报和防治工作具有重要意义。 |
| 英文摘要: |
| To understand the population characteristics and influencing factors of Sogatella furcifera (Horváth) in Cangyuan County, Southwest Yunnan Province, the population dynamics of S. furcifera under light trap and in the field in Cangyuan County were analyzed by light trapping and field investigation from 2010 to 2019. The correlation between population size of S. furcifera and influencing factors were analyzed by SPSS. The results showed that the adults and nymphs of S. furcifera could overwinter in ratoon and shattering rice, and its highest population density was up to 1 600 adults/667 m 2 in winter.The overwintering population density of S. furcifera was significantly correlated with extreme low temperature ( r = 0.473). S.furcifera had three main density peaks under light trap which concentrated in late March to early April, late May to early July and September.The peak period and light trap catches of S. furcifera fluctuated widely between different years.The peak periods of field population showed an increasing trend along with the continuous migration of S.furcifera , which formed the damage peak of field population between late May and early June. Population size of S.furcifera decreased rapidly after rice heading. The return migration peak had huge captures of S. furcifera under light trap in September, showing low threat to local rice production. The field maximum population of S. furcifera was significantly positive correlated with cumulative light-trap catches in May( r =0.670), while there was no significant correlation with overwintering population density, and cumulative light-trap catches in March and April. There was a significant positive correlation between the cumulative light-trap catches in May and the rainfall in May ( r = 0.758), indicating that the immigration population in May was the key factor affecting the population damage of S. furcifera. Therefore, a better understanding of the population characteristics and influencing factors of S.furcifera will be a great favor for the monitoring and controlling of this pest in Southwest Yunnan Province. |
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