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为有效控制外来入侵有害生物日本松干蚧的发生危害,减少虫害造成的经济损失,通过2019～2021年3年设置日本松干蚧固定样地进行了监测调查,2021年3月在日本松干蚧第1代若虫展露期开展了药物筛选。结果表明：30%噻虫胺/噻嗪酮和48%毒死蜱乳油防治效果为最佳,2021年9月利用无人机在日本松干蚧第2代若虫展露期开展超低空药剂喷雾防治试验,通过3次药效检查,日本松干蚧若虫期虫口减退率达90%左右,一定程度上控制了日本松干蚧的扩散蔓延和危害。通过调查初步掌握了日本松干蚧在贵州省遵义市的分布、发生面积和危害情况,观察到日本松干蚧在遵义市的生物学特性和发生扩散规律,可为防治日本松干蚧提供参考。 相似文献
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日本松干蚧综合防治技术协调应用的研究 总被引：1，自引：1，他引：1
浙江省日本松干蚧综合防治技术研究协作组 《浙江林业科技》1989,(5)
日本松干蚧(Matsucoccus matsumurae Kawana)是我省松林的重要害虫。在1984～1987年开展了下列研究:1.保护、利用和提高林间捕食性天敌,控制日本松干蚧效果技术措施。2.林间释放多种天敌、多种虫态的应用技术措施。3.松干蚧生物防治和化学防治综合协调防治技术的扩大试验。 相似文献
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本溪和辽阳两处的油松全分布区地理种源试验林处于日本松干蚧疫区，研究抗蚧性差异是油松种源试验内容之一。在８龄林时观察了松干蚧虫显露数量；在１０龄林时依四个等级的标准，逐株树划定受害等级，研究油松原林对日本松干蚧的抗性地理变异。结果表明：种源间的抗蚧性差异极显著，以适应性、生长性和抗蚧性的综合评价，选出遵化、黄陵、宁城、承德、泰山、迁西、黄龙、绥中等８个种源抗日本松干蚧的油松优良种源，其抗性树株率平均 相似文献
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自然界的生物群中,某些物种对于同一地区内的综合外界环境条件有相同的时间性反应,我们利用这个原理,对日本松干蚧的发生与物候现象的关系进行了系统观察,现将结果整理如下(见附表)。 从表中可以看出,日本松干蚧各虫态的出现与本地区的树种,农作物的某一生长时期有 相似文献
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在我国南方日本松干蚧(Matsucocus matsumurae Kuwana)发生区存在着有虫无灾、严重成灾和轻度危害相对稳定的三种类型。本文应用生态因子对日本松干蚧数量变动的原因进行了较详细的研究,通过野外接种,观察测定和室内实验,得出影响日本松干蚧寄生若虫数量变动的关键因子为夏季高温。该虫寄生若虫在枝干上的死亡率阳面>阴面,阳坡>阴坡,疏林>密林,死亡率的高低与光照,温度密切相关。沿海地区松干蚧一般危害严重,内陆地区经常有虫无灾,这是由于海洋性气候和内陆性气候的关系。同时本文还提出了合理定株修枝,使林内通风透光,增强树势,对松干蚧具有一定的抑制作用。 相似文献
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本文探讨将拓扑预测方法应用于害虫种群动态的长期预报中,以马尾松毛虫为实例,进行了研究。研究结果表明:拓扑预测不仅能得出害虫种群的长期动态趋势,进行长期预报,而且拓扑预测图显示了未来的害虫猖獗周期及发展过程,具有一定的理论意义和实际应用价值。 相似文献
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蚱蝉 [Cryptotympana atrata ( Fabricius) ]属同翅目 Homoptera,蝉科 Cicadidae,在我国分布较广泛。据文献 [1]记载 ,蚱蝉若虫、成虫能危害 44科、77属、14 4种林木、果树等木本植物 ;成虫产卵能造成被害枝条枯死或形成明显的产卵痕迹。 1999年 7月中下旬 ,浙江某地机场及周边地区 ,蚱蝉成虫暴发成灾 ,特别是飞机发动时 ,数千只蚱蝉成虫闻声迅速飞向发动的飞机并猛烈冲撞 ,短时间内毁坏飞机发动机数台 ,造成巨大经济损失。蚱蝉成灾后 ,飞机被迫停飞。笔者应邀进行了蚱蝉生活习性观察和防治试验 ,现将结果总结如后。1 生活习性观察 蚱… 相似文献
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《Forest Ecology and Management》2006,221(1-3):215-219
Historical data of defoliation and population density were examined to determine whether a sustained outbreak of balsam fir sawfly (Neodiprion abietis Harris) in western Newfoundland, Canada is unprecedented in severity and duration. Results indicate that the current outbreak departs substantially from historical trends, covering a surface area twice the sum of all infestations occurring in the preceding 50 years. The current outbreak is also of longer duration due to a northward expansion of the range usually subjected to severe defoliation by this insect. Time-series analysis indicates that balsam fir sawfly dynamics have a strong second-order component, providing testable hypotheses for future studies investigating the factors responsible for population fluctuations. 相似文献
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In northern forests dominated by aspen (Populus spp.), the duration of outbreaks of forest tent caterpillar (Malacosoma disstria Hübner) has been reported to increase with forest fragmentation. This relationship has not been tested in other forest types affected by this widespread native defoliator. From 2002 to 2007, a large-scale outbreak of this insect in the northeastern United States defoliated millions of hectares, with sugar maple (Acer saccharum Marsh.) the primary host. We used digital defoliation maps generated from aerial surveys and national land cover data to assess the effect of fragmentation on outbreak duration in areas of NY, MA, VT, and NH. We found that outbreak duration increased with forest cover and decreased with the forest edge, in opposition to the pattern previously reported for aspen-dominated forests in Canada. This pattern was significant from plot sizes ranging from 100 m to 1000 m in radius. The relationship between FTC and its natural enemies, which was postulated to underlie the effect of fragmentation on outbreaks in aspen forests, may be affected differently in northern hardwood forests, or other factors may be more important in determining outbreak duration in this forest type. 相似文献
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The first record of a granulosis virus in larvae of the small needle miner,Epinotia pygmaeana Hbn., is evidenced by electronmicrographs. The granulosis was discovered during an outbreak in the southwestern Swiss Alps. According to a 1986 compilation, 153 insect species are worldwide known to be susceptible to the mentioned subgroup of virus diseases. Included in this number are 11 European species of harmful forest insects. 相似文献