共查询到17条相似文献，搜索用时 733 毫秒
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杧小果普瘿蚊Procontarinia fructiculi是广西百色杧果花期的新害虫,在室内采用浸渍法筛选出对杧小果普瘿蚊幼虫杀虫效果较好的杀虫剂,在杧果花穗抽发期采用喷雾法开展田间防治试验。结果表明,45%毒死蜱EC 1 000倍液、522.5 g/L氯氰菊酯·毒死蜱EC 1 000倍液、4.5%高效氯氰菊酯微乳剂1 000倍液处理在药后24 h和48 h对杧小果普瘿蚊老熟幼虫的校正死亡率均在90%以上;田间试验表明,45%毒死蜱EC 1 000倍液、522.5 g/L氯氰菊酯·毒死蜱EC 1 000倍液、4.5%高效氯氰菊酯ME 1 000倍液处理对杧小果普瘿蚊的防治效果分别为97.36%、98.32%和100%,平均虫果率均小于3%,这3种药剂可作为防治杧小果普瘿蚊的药剂在生产上使用。 相似文献
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草莓番石榴原产巴西,其果实、叶片和植株均具有较高的经济价值,是热带地区的重要果树,目前在我国南方部分省份已有栽培。番石榴单须瘿蚊Elachypalpus psidii Maia&Nava和巨叶瘿蚊Dasineura gigantea Angelo&Maia是仅知的两种在南美洲严重为害草莓番石榴的害虫,在我国需要被考虑列为潜在的重要进境植物检疫性有害昆虫。本文在国内首次详细描述了这两种瘿蚊的形态特征、生物学特性以及为害特点等,以期为这两种番石榴害虫的鉴定提供依据,并使读者了解其经济重要性,为这类害虫的进一步研究、检疫和预防提供参考。 相似文献
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枸杞红瘿蚊是宁夏枸杞上重要成灾害虫之一。枸杞白瘿蚊是继枸杞红瘿蚊后在宁夏枸杞上新发现的另一种瘿蚊科害虫。两种瘿蚊均以幼虫为害宁夏枸杞幼嫩花蕾使其不能正常发育,但形成的虫瘿结构差异明显。本文通过外部形态观察、石蜡切片等方法对两种虫瘿发育过程中的外部形态特征、内部组织结构进行了对比。结果表明,两种瘿蚊幼虫的取食不会引起花部结构的增加或缺失,但均影响花部结构发育,使其无法正常开花结果。枸杞红瘿蚊主要造成子房细胞数量增多形成虫瘿,枸杞白瘿蚊主要造成花冠细胞体积增大形成虫瘿。此外两种虫瘿在花柱、花丝、蜜腺、花药、花柄等处均存在一定差异。 相似文献
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桔实雷瘿蚊的发生与防治 总被引：2，自引：0，他引：2
桔实雷瘿蚊的发生与防治卜木祥１黄洪泉１王炳珠２刘南欣３（１梅县植物检疫站５１４０３１２梅县病虫测报站３广东省昆虫所）桔实雷瘿蚊ＰｅｓｅｌｉｅｕａｃｉｅｒｉｆｒｕｇｉｓＪｉａｎｇ是广东省沙田柚果上新发现的危险性害虫。成虫产卵于柚果表皮，幼虫孵化后蛀食白... 相似文献
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通过对宾川县种植的早熟、中熟、晚熟葡萄品种调查,品种间受瘿蚊的为害程度有差异,晚熟品种发生重,中熟品种发生较轻,早熟品种基本没有发生。调查发现,葡萄瘿蚊只为害果粒。描述葡萄瘿蚊为害特点,成虫、幼虫、蛹的形态特征,越冬代成虫和第一代成虫发生高峰期及生活习性,提出摘除被害果穗集中处理、成虫发生期及时进行药剂防治等防治对策。 相似文献
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稻瘿蚊生物型的研究 总被引：17，自引：0，他引：17
作者于1979～1982年,使用国际通用的Leuang_(125)、OB_(677)、IET_(2911)、W_(1263)、PTB_(21)、Muey Nahng_(62)M等六个鉴定种和TN_1感虫对照种,选择广东省的封开、梅县、信宜、惠阳、潮安、南海、韶关、花县、东莞等16个点的稻瘿蚊,按国际稻瘿蚊抗性鉴定标准,进行了生物型鉴定。经连年多世代验证其抗(R)感(S)反应结果,花县、从化、韶关、东莞4个点R.R.R.R.S.S.反应定为中国Ⅰ型;南海、三水、新会、中山、番禺、惠阳、潮安7个点R.R.R.S.S.S.反应定为中国Ⅱ型;连山S.S.S.R.S.S.反应定为中国Ⅲ型;封开、信宜、梅县、五华4个点S.S.S.S.S.S.反应定为中国Ⅳ型。其中以Ⅱ型分布最广,Ⅰ、Ⅳ型次之,Ⅲ型最少。Ⅲ、Ⅳ两个生物型,目前国内外尚未见报道。此外鉴定了一些对四个不同生物型具有不同抗性的资源品种。 相似文献
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本文记述了采自广州芒果瘿蚊ＥｒｏｓｏｍｙｉａｍａｎｇｉｃｏｌａＳｈｉ的寄生蜂三种,姬小蜂科的桑氏长尾啮小蜂ＡｐｒｏｓｔｏｃｅｔｕｓｓａｎｋａｒａｎｉＢｏｕｃｅｋ,缨小蜂科的纳氏柄翅小蜂Ｇｏｎａｔｏｃｅｒｕｓｎａｒａｙａｎｉ（ＳｕｂｂａＲａｏ＆Ｋａｕｒ）和广腹细蜂科的芒果瘿蚊广腹细蜂Ｓｙｎｏｐｅａｓｓｐ．。其中,前两种为中国新记录种。 相似文献
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Integrated pest management programs for mango must be based on sampling and on economic thresholds, and must take into account
the effects of cultural practices, horticultural sprays and disease control on pest and natural enemy interactions. An analysis
of the mass of information available on the different mango pests,viz., fruit flies(Bactrocera sp.,Ceratitis sp.,Anastrepha sp.), mango seed weevil(Sternochetus mangiferae), thrips(Frankliniella spp.), gall midges(Procontarinia sp.), scales, mites and mealybugs is given, as well as different examples for future entomological research. 相似文献
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Abstract The African rice gall midge, Orseolia oryzivora Harris and Gagne (Diptera: Cecidomyiidae), is an important pest of rice, Oryza sativa, in Burkina Faso as well as other countries in West and East Africa. In spite of its importance, little is known regarding the relationship between gall midge populations and grain yield losses. To determine yield losses the gall midge was reared in cages and adult midges were placed on caged plants of the rice variety ITA 123 at different population levels. The seven treatments consisted of different numbers of insects infested on the plants; 0 insect pairs (non‐infested check), and 1, 5, 10, 15, 20 or 25 midge pairs/cage. The loss in yield in relation to the non‐infested control was highly positively correlated (R2 = 0.81) with the percentage of gall midge damaged tillers. The infestation by the insect on the plants resulted in the compensatory production of tillers which developed in response to the gall midge damage but the compensation was not sufficient to make up for the loss of yield due to the damaged tillers. Yield loss ranged from 0% in the control to 65.3% in the treatment with 25 pairs of adults. One per cent of tillers damaged resulted in 2% grain yield loss. 相似文献
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基于地理信息系统的全国主要粮食作物病虫害实时监测预警系统的研制 总被引：10，自引：1，他引：10
为提高病虫害防治的准确性和科学性，依据植保知识、专家经验，采用人工智能、自行开发的具地理信息系统基本功能及决策支持系统（DSS）的相关技术，研制了基于Internet网络传输的全国主要粮食作物病虫害实时监测预警系统。本系统能够对小麦、玉米、水稻、马铃薯、高粱和谷子6种主要粮食作物的60余种病虫害进行实时监测、预警、诊断、提供植保知识，能够对年度间同期病情、虫情做出图形比较，可将抽象的预警数据转化成清晰简明的点图式电子地图，直观明了地显示病虫害发生点数及地域分布，可根据品种的抗病虫性、病虫害发生基数和未来天气预报等信息对小麦白粉病、赤霉病、纹枯病、稻瘟病、稻曲病、马铃薯晚疫病、麦蚜、小麦吸浆虫和玉米螟9种重要病虫害做出短期防治决策，系统的运行有助于提高人们对主要粮食作物病虫害管理的科学水平。 相似文献
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Abstract Seeds of 22 rice strains carefully selected for resistance by continuously testing under high gall midge pressure at Cuttack (Orissa) through 1979–198’ and three such strains from Raipur (Madhya Pradesh) were assembled along with susceptible standard Jaya and were simultaneously tested at both locations (Cuttack and Raipur) against the Asian rice gall midge Orseolia oryzae Wood‐Mason in wet season 1985. Eighteen entries proved resistant at both locations. While Asha, Usha and Samrudhi were resistant at Raipur and susceptible at Cuttack, Shakti IR.36, IR.50, Daya and Pratap were resistant at Cuttack and susceptible at Raipur, based on which characterization of the Cuttack (Orissa) and Raipur (Madhya Pradesh) gall midge biotypes was proposed. In gall midge biotypes testing, meticulous selection of only such entries with consistently proven resistance to gall midge at least at one location, carrying forward seed from resistant plants only each season under high gall midge pressure (with 100% seedling/hill infestation in oft repeated susceptible check) and classification of test entries at the strain's level either as resistant or as susceptible without scope for the third ‘moderate’ category to intervene, generally ignored by earlier workers, were stressed. 相似文献