惠东县红棕象甲的发生及防治

在充分了解红棕象甲的生物学特性、危害特点和传播途径的基础上,调查了惠东县红棕象甲的发生和危害情况,并总结了危害加拿利海枣的红棕象甲的防治方法。     

红棕象甲防治技术初探

根据在广西凭祥市对红棕象甲危害特点、传播途径和危险性观察,开展了防治技术研究,采取加强检疫、植物诱杀、化学防治等的综合防治措施,取得了较好的防治效果。     

棕榈植物红棕象甲发生调查初报

一、发生为害情况 自1994年开始,广东棕榈园林公司棕榈场先后通过厦门及台湾商人处购入海枣、台湾枣和银海枣(伊拉克枣)等共4批200多株1—5米高的大苗。因“竹虫”为害死亡及被挖掉的共7株,首株死树发生在1996年,其余均在1997年相继出现死树,经对死树进行剖检,发现被害株一株里面有活虫由数头至百余头不等,最多的一株有幼虫、蛹及成虫共123头。还有部份长势不好的植株可能已受感染。 在现场对虫害株进行调查,在1株银海枣树干     

南宁市红棕象甲发生情况初步调查及防治对策

文章简要描述了红棕象甲的形态特征及为害特点,通过调查得到,红棕象甲在南宁市的寄主有大王椰子等7个树种。在各发生点中,苗圃的寄主植物种类较多,受害严重;行道、公园等则寄主种类少,受害较轻。最后,文章就调查结果进行了讨论,并对该虫提出了植物检疫、日常管理等三方面的防治措施。     

红棕象甲的初步调查研究

红棕象甲是椰子树主要害虫之一，此虫在海南岛分布于琼山、定安、文昌、琼海、万宁、乐东、儋州等地；成、幼虫为害椰予树叶柄及茎顶，严重为害时可使椰子树致死，据调查此虫对椰子树为害率高达84％，叮通过捡疫、化学防治等措施加以防治。     

棕榈科植物杀手——红棕象甲的研究进展

红棕象甲是进境植物检疫性有害生物之一,扩散能力和危害性非常强大.为遏制该虫继续蔓延、巩固农业、林业和园林建设成果,确保我国农业、林业与园林建设的生态安全.文章通过介绍了棕榈科植物害虫红棕象甲的生物学特性、形态特征、危害性和防治措施等,以期为广大科研人员提供理论参考.     

丽水地区红棕象甲的发生及耐寒性测定

接要:通过室内饲养和野外观察研究了红棕象甲(Rhychophorus ferrugineus)在浙江丽水的生活史和适生性,结果表明:红棕象甲在浙江丽水1a发生1～2代,以成虫、幼虫、蛹在植株内部结茧越冬,翌年3月下旬成虫开始活动,第一、第二代卵4月上旬和8月上旬出现,成虫产卵期长,世代重叠严重,3-11月为危害期,12月上旬开始越冬;红棕象甲成虫、幼虫、蛹的过冷却点分别为(-7.44±2.971)℃、(-3.35±0.596)℃和(-2.74±1.483)℃,能适应丽水的气候条件.     

入侵害虫红棕象甲的风险分析

红棕象甲是我国林业检疫性害虫.运用国际植物检疫措施实施标准(ISPM)的有害生物风险分析(PRA)程序,建立红棕象甲传入风险分析评估模型,采用定性分析和多指标综合评估相结合的方法进行分析.结果显示,红棕象甲综合评判值(R)为2.18,属高风险有害生物,在我国很多地区易定殖,对我国的棕榈科植物威胁很大.据此,提出相应的风险管理措施.     

红棕象甲在海南发生为害规律及其防治

描述了海南地区红棕象甲的生活习性，及对一些棕榈科植物的为害症状、为害规律，并提出一些有效的防治措施。     

红棕象甲室内生物学特性及形态观察

在室内对红棕象甲生物学特性和形态进行了系统观察,表明在26℃、RH80%、寄主食料华盛顿棕榈饲养条件下,红棕象甲世代历期平均114.77d,最短87.00d、最长166.00d,其中卵期平均3.50d,幼虫期平均36.68d,结茧到产卵前历期平均29.96d。幼虫以8龄为主,1～2龄幼虫的体重小于0.01g,头壳宽短于1.0mm,3龄后幼虫体重、头壳宽度、体长和体宽开始增加,8龄时幼虫平均体重为3.36g,头壳宽度6.0mm。成虫雌雄性比1.78：1,补充营养能显著延长成虫寿命,在无补充营养时,雌雄成虫寿命只有7.00d左右,而在补充营养后,雌雄成虫寿命最长可分别达130.00d和244.00d。雌虫产卵量最大376粒,最小89粒,平均216粒。     

Development of the red palm weevil, Rhynchophorus ferrugineus (Olivier), (Coleoptera, Curculionidae) on natural and synthetic diets

The development of the red palm weevil, Rhynchophorus ferrugineus (Olivier) was investigated on a newly developed semiartificial diet as compared with two natural diets namely sugarcane stem and banana fruit. The weevil was successfully maintained on these diets and duration of the life cycle for males and females, respectively were 164.97 and 194.61 days on the semiartificial diet, 192.5 and 186.5 days on banana, and 172.00 and 170.00 days on sugarcane. The average egg production per female was shown to be significantly higher on the semiartificial diet, being 184.00?±?18.68 eggs compared with an average of 125.00?±?11.97 and 133.00?±?15.21 eggs on banana and sugarcane, respectively. The fertility ranged between 94?–?100?% in those eggs deposited by females previously reared on the tested diets. The developed semiartificial diet was shown to be suitable for maintaining laboratory colonies of the red palm weevil, and it can substitute natural diets.     

Aggregation pheromone traps, a major component of IPM strategy for the red palm weevil, Rhynchophorus ferrugineus in date palms (Coleoptera: Curculionidae)

The population fluctuation of the red palm weevil, Rhynchophorus ferrugineus was studied, using the aggregation pheromone traps, during 2000 and 2001 in the United Arab Emirates. The insect population increased gradually from January to reach its peak in March, April, or May. The populations in three date palm plantations were much less in 2001 compared to 2000 with reductions of 29.7–51.7%. An evaluation of the performance of the pheromone traps showed that they could capture 4.4 to 20.7% of the resident populations of R. ferrugineus in the three different date palm plantations. No significant differences could be found in rates of capture between males and females. Individuals of marked weevils released in date palm plantations migrated 1–7 km from the plantations in which they were released. The released marked weevils were recaptured, mostly, within 3–5 days post release.     

椰子大害虫-锈色棕榈象及其近缘种的鉴别(鞘翅目:象虫科)

锈色棕榈象Rhynchophorus ferrugineus(Oliver)隶属于鞘翅目Coleoptera 象虫科Curculionidae,近年在海南省严重危害椰子，文章介绍了该虫与同属近缘种美洲棕榈象Rhynchophorus palmarum（L.）等成虫，幼虫和蛹在形态特征上的区别。     

普陀山禾本科1种浙江分布新记录植物——蒺藜草

报道了发现于普陀山的1种禾本科植物--蒺藜草(Cenchrus echinatus Linn.),为浙江属与种的地理分布新记录.     

Laboratory and field evaluation of the pathogenicity of entomopathogenic nematodes to the red palm weevil, Rhynchophorus ferrugineus (Oliv.) (Col.: Curculionidae)

Ten Egyptian and imported entomopathogenic nematodes were evaluated for their pathogenicity to R. ferrugineus in both the laboratory and the field. In the laboratory, most nematodes were pathogenic to the pest larvae, pupae and adults. Larvae and adults were more susceptible to nematode infection (mostly 100?% mortality) than pupae enclosed in their cocoons. In the field however, the highest insect larval mortality was 66.67?% and most of nematodes failed in controlling the pest. Such failure could be due to hot weather, the tunnelling behaviour of the pest larvae and the too much sap in the infested sites in the trunks of palm trees.     

浙江省禾本科新记录属、种——距花黍属距花黍

在浙江省第二次湿地调查时,发现禾本科(Gramineae)新记录属、种——距花黍属(Ichnanthus),距花黍(I.vicinus).     

浙江兰科新记录——广东异型兰

报道了兰科Orchidaceae异型兰属Chiloschista Lindl.广东异型兰Ch. guangdongensis Z. H. Tsi在浙江的新分布。对该种的形态特征进行了描述,并提供了凭证标本和活体照片。     

浙江母草属一新记录植物——旱田草

报道了浙江玄参科母草属一新记录植物旱田草(Lindernia ruellioides(Colsm.)Pennell.),引证标本存浙江林学院植物标本馆(ZJFC).