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经初步统计,我国荔枝害虫已达193种,隶属2纲11目57科,以鳞翅目和鞘翅目害虫居多,同翅目和半翅目次之,对荔枝害虫进行了初步分析.结果表明:在世界动物区系中,东洋区种类占绝对优势,古北区次之,在中国动物地理中,以华南区南方种类所占比率最大;6大荔枝产区的荔枝害虫种类数依次为广西>广东>福建>云南>台湾>海南;各荔枝产区害虫的优势种不尽相同,既有共同的全国性害虫,也有区域性代表种或特有种类. 相似文献
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本文报道江西省油桐Aleurites fordii Hemsl,A.montana wils害虫调查结果初步提出了江西油桐害虫名录68种,分别隶属于6目25科。其中对几种主要害虫的发生及危害情况作了简要的记述。 相似文献
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通过采用线路调查,结合踏查与详查、标准地调查及灯诱相结合的方法对克拉玛依林区多种林木蛀干害虫进行采集,记录蛀干害虫种类、分布地点、寄主植物、危害程度和危害现状。结果表明:克拉玛依林木危害的主要蛀干害虫种类为2目、6科、15种,主要为鳞翅目3科、3种,其中,透翅蛾科1种,木蠹蛾科1种,螟蛾科1种,鞘翅目3科、12种,其中,天牛科6种,吉丁科2种,小蠹科4种。对其危害现状进行实地观察,为防止主要蛀干害虫的扩散蔓延,必须应用生物防治和生态控制技术相结合的方法,才能保证克拉玛依林区森林健康安全。 相似文献
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通过对桐柏山区茶Camellia sinensis害虫进行观察和调查,鉴定出常见害虫共10目32科48种,其中鳞翅目Lepidoptera有10科17种,占35.4%;同翅目Homoptera、鞘翅目Coleoptera分别有5科6种,分别占12.5%;直翅目Orthoptera有4科9种,占18.8%;半翅目Hemipter、双翅目Diptera分别有2科3种,分别占6.3%;蜚蠊目Blattodea、缨翅目Thysanoptera、蜱螨目Acarina、膜翅目Hymenoptera各有1科1种,分别占2%。对危害严重、危害次数多的鳞翅目10种常见害虫的危害特征进行了研究,为茶生产提供参考依据。 相似文献
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据调查,云南省常见危害核桃的害虫有82种,对其中6种主要害虫的生活史及危害特点作了介绍,针对云南省核桃害虫的种类及危害特点,提出了综合性的防治措施。 相似文献
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大面积发展的落叶松人工纯林已占抚顺市森林面积的29.4%,为落叶松有害生物提供了丰富的营养源。林内生物多样性单一,造成落叶松有害生物灾害频发,严重影响了落叶松的健康生长和森林环境的稳定。据调查,抚顺地区落叶松有害生物多达34种,其中虫害19种、病害10种、鼠害3种、鸟害2种。该文总结了抚顺地区落叶松有害生物的发生情况和危害特点,并提出了有效防控措施及今后治理方向。 相似文献
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Population densities of wheat ear insects infesting different winter wheat varieties (n = 50) were estimated during 2008 and 2009 seasons near Halle, central Germany. The research was aimed at identifying wheat
varieties most resistant to wheat ear insect pests. Two methods were used to evaluate the degree of insect infestations in
different wheat ear varieties. Wheat ears were dissected when kernels were in Zadoks stage 73 and examined using a binocular
microscope to count the number of spikelets and infested kernels, and to identify the insect pests present. In addition, white
water traps were placed on the soil underneath each variety to collect mature larvae of wheat blossom midges (WBMs) as an
indicator of potential crop risk for the next year. There were significant differences in the number of thrips and WBM infesting
wheat ears among varieties in both years. Thrips numbers were the highest in Akratos, Limes and Ritmo varieties in 2008 and
in Michigan Amber, Elegant and Kontrast in 2009. Thrips were the lowest in Thuareg in 2008 and Robigus varieties in 2009.
The results showed that the highest WBM infestation level was observed in Michigan Amber in both years. The lowest WBM infestations
were found in Türkis, Cubus, Capo, Welford and Robigus in both years. The number of infested kernels was positively correlated
with WBM among varieties. In the water traps, the highest numbers of WBM larvae were recorded in Saladin and Bussard in 2008
and Orlando, Julius and Glasgow varieties in 2009. The lowest values were recorded in Victo, Enorm, Robigus and Welford varieties
in both years. The results provide a guide for selecting winter wheat varieties with resistance to these wheat ear pests. 相似文献
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银杏酚酸类物质防治农业害虫的研究 总被引:15,自引:0,他引:15
银杏酚酸类物质即银杏酸、银杏酚和白果酚是从银杏(Ginkgo biloba L.)外种皮中分离得到的杀虫活性成分。利用银杏外种皮粗提物配制的生物农药,具有广谱防治农业害虫的作用。 相似文献
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北红尾鸲繁殖习性及食性研究 总被引:3,自引:3,他引:0
北红尾鸲在辽宁省为夏候鸟,居留期长达半年。以多种昆虫为食,这些昆虫多为农林业的重要害虫,在抑制森林虫害的发生,维持自然生态平衡方面有较重要的作用。通过在宽甸县白石砬子自然保护区的观察,报道了该鸟的求偶与交尾、营巢与产卵,孵卵与育雏等繁殖习性,并对雏鸟的生长变化及食性进行了观察与分析。有助于对该鸟的生态进行深入研究和人工招引与利用。 相似文献
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近10多年来,林业工作者针对化学防治存在的不良作用,致力于选择农药的新品种,试用高效低毒低残留的拟除虫菊酯和灭幼脲一类新杀虫剂;采用超低容量喷雾与烟雾载药技术,以及毒环及注射技术;研制了林用剂型,为森林害虫防治提供了可靠的手段。一个更科学、更合理、更有效,更安全的化学防治新时期已经出现。 相似文献