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种天敌
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  species of natural enemies
     Insects were investigated and collected from the EXPO Garden of Kunming in 2004.Specimens belonging to 158 species 69 families 15 orders including 77 species of pests,30 species of natural enemies and 51 species of other insects were identified.
     2004年对昆明世博园昆虫进行了调查,鉴定标本15目69科158种,其中害虫77种,天敌昆虫30种,其它昆虫51种。
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     It was shown that insect community was composed of 10 orders,41 families and 60 species in the young longan orchard,including 43 species of pest,11 species of natural enemies and 6 species of moderate insects.
     结果表明,幼龄果园昆虫组成主要有10目41科60种昆虫,其中害虫43种,天敌11种,中性昆虫6种.
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     this paper is a third report about the survey of the insect natural enemies to rice pests in Hunan province. 85 species of natural enemies belonging to 61 genera,24 families,2 orders were described.
     此系湖南水稻害虫天敌昆虫调查续报,记述85种天敌昆虫,分属于2目24科61属
短句来源
     The results showed that there were 21 species of arthropods, including 10 species of insect pests and 11 species of natural enemies .
     调查共记录节肢动物21种,其中害虫10种,天敌11种。
短句来源
     The result of research on insect community in lichee orchard from Nov, 2001 to Oct, 2002 in Shenzhen city showed that insect community of lichee orchard is composed of 369 species of insects (including Spider Class), which includes 63 species of pests, 79 species of natural enemies and 227 species of neutral insects.
     2001年11月至2002年10月对深圳市荔枝园昆虫群落的研究结果表明:荔枝园昆虫群落种类(包括蛛形纲)共有369种,其中害虫有63种,天敌79种,中性昆虫227种。
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  “种天敌”译为未确定词的双语例句
     Under the artificial breeding condition,their damage rates are 11.0%,35.0%,13.6% and 11.6% respectively.
     在人工放养条件下,4种优势种天敌的寄生率和危害率依次为11.0%、35.0%、13.6%和11 6%。
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     The species component and species richness,dominance ,ecological concentration,diversity and evenness of arthropod community in Eriobotrya japonica orchard were studied in detail. The results showed that there were 78 species of arthropods, include 55 pests,9 natural enemies,8 moderate insects and 6 araneids. And their percentages to the whole community were 70.51%,11.54%,10.26%,7.69% respectively.
     通过系统调查研究,结果表明,枇杷园生态系统内节肢动物群落物种数为78,其中害虫55种,天敌9种,中性虫8种,蜘蛛类6种,分别占整个群落的70.51%、11.54%、10.26%、7.69%。
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     The results showed that: (1) There were 59 species of insect pests (24 species) and natural enemies (35 species) in this corn field.
     结果表明:(1)在棉区夏玉米田共有害虫和天敌59种,其中害虫24种,天敌35种。
短句来源
     Among the collected samples, 28 special insect pests, 3 species natural enemies, 14 species of mites and 15 species of fungi were found.
     初步鉴定属于害虫的28种,天敌昆虫3种,螨14种,霉菌15种。
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     A Fuzzy Evaluating Method for One-Species of Natural Enemies Controlling Multi-Species of Pests
     一种天敌控制多种害虫作用的模糊数学评价方法
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  相似匹配句对
     anachoreta has about 30 strain natural enemies.
     其天敌大约有30以上。
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     A LIST OF 37 KINDS OF INSECTS AS NATURAL ENEMIES
     河北省天敌昆虫37名录
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     tomentella and G.
     野生G.
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     max.
     max
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     A study on natural enemies of Euproctis pseudoconspersa Strand
     茶毛虫天敌的研究
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  species of natural enemies
Our results suggest that the level of predation upon herbivorous insects may depend more upon plant architecture than on the particular species of natural enemies present.
      
wrightii, Lema daturaphila and Tupiocoris notatus, several generalized species of natural enemies exhibited lower rates of predation on glandular compared to non-glandular plants.
      
We found four new species of natural enemies of storage pests recruiting from insects (Habrobracon hebetor, Cephalonomia wattersoni, Brachymeria sp.) and mites (Blattisocius tarsalis).
      
Two species of natural enemies can be used to control aphids in greenhouses.
      
Two species of natural enemies were released either synchronously or solely, and their efficacy was compared to control plots devoid of antagonists.
      
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The present work deals with the bionomics of thrips on corns in Peking suburbs.They include Anaphothripa obscurus (Miiller),Frankliniella tenuicornit (Uzel); Haplothrips aculeatus (fabricius); Scolothrips longicornis priesner and Aeolothrips fasciatus (Linnaeus).The former three species are pests injurious to crops while the latter two are predators.Special attention has been paid to A.obscurus which was not important until its outbreak in 1975.The adults of this species show wing polymorphism characterized...

The present work deals with the bionomics of thrips on corns in Peking suburbs.They include Anaphothripa obscurus (Miiller),Frankliniella tenuicornit (Uzel); Haplothrips aculeatus (fabricius); Scolothrips longicornis priesner and Aeolothrips fasciatus (Linnaeus).The former three species are pests injurious to crops while the latter two are predators.Special attention has been paid to A.obscurus which was not important until its outbreak in 1975.The adults of this species show wing polymorphism characterized by macropterous,brachypterous and intermediate forms.It seems to propagate exclusively through parthenogenesis since no male has ever been found up to now.The adult caused serious damage on corns in seedling stage,especially the interplanted spring corns.Wheat may serve as the host plant for its initial population growth and migration towards corn would take place in the late spring.In late June the spring corn grows into stages no more suitable for their infestation and at that time they would migrate to other host plants.Raining may check its multiplication but drought favours it.This pest may be controlled by appropriate irrigation and manuring the corn fields or by spraying with 40% Dimethoate in 1:1,500 dilution.

本文叙述了北京郊区玉米上蓟马的种类鉴别、寄主、为害征状及严重性、生活习性、发生为害与环境因素的关系和防治。种类有玉米黄呆蓟马 Anaphothrips obscurus(Muller),禾蓟马Frankliniellatenuicornis(Uzel),稻管蓟马(又名禾谷蓟马)Haplothrips aculeatus (Fabricius),长角六点蓟马gcolothrips longicornis Priesner,横纹蓟马 Aeolothrips fasciatus(Linnaeus)。前3种是害虫,后2种是天敌昆虫。本文着重报道了玉米黄呆蓟马。它过去在京郊为害不重,而1975年严重发生为害。成虫有长翅型、短翅型及半长翅型。雄虫至今未发现。主要是成虫对玉米苗造成严重为害。以春玉米上虫数最多,但对套种玉米为害最重,这与耕作改革有关。麦类是它向玉米上过渡的虫源基地。6月下旬,春玉米和中茬玉米的生长期已不适合,它便向其他寄主上转移。降雨对其数量消长影响最显著,干旱对其发生有利。防治上,对玉米适时灌水施肥,加强管理甚为重要;药剂防治可用40%乐果乳剂1,500倍液喷雾。

The pine tussock moth (Dasychira axutha Collenette) is an important pest of the Massonian pine (Pinus massoniona). It has four generations per year in Zhanjiang, Guangdong province. The first generation appears from mid-late March to mid-June, the second from late May to early August, the third from mid-July to early October, the fourth from mid-September to March next year. In general, the larva has six-seven instars. Winter is spent as pupae within its siken cocoons in the litter or below the surface of bush.18...

The pine tussock moth (Dasychira axutha Collenette) is an important pest of the Massonian pine (Pinus massoniona). It has four generations per year in Zhanjiang, Guangdong province. The first generation appears from mid-late March to mid-June, the second from late May to early August, the third from mid-July to early October, the fourth from mid-September to March next year. In general, the larva has six-seven instars. Winter is spent as pupae within its siken cocoons in the litter or below the surface of bush.18 natural enemies have been collected, of which 11 belong to parasites, 4 belong to "predators and 3 belong to pathogens. The pine tussock moth nuclear polyhedrosis virus is among the most important natural enemies. The parasitism of egg is about 50-75 per cent and the mortality of pupae is about 89 per cent.The results of experiments showed that Resmethrin, Trichlorphon, Dichlorvos and Abate were very effective in the control of the larvae.

松茸毒蛾(Dasychira axutha Collenette)是马尾松(Pinus massoniana)的重要害虫,在广东湛江地区一年发生4代,第一代3月中下旬至6月中旬,第二代5月下旬至8月上旬,第三代7月中旬至10月上旬,第四代9月中旬至翌年8月。幼虫一般为6—7龄,以蛹越冬,在枯枝落叶或灌木丛中结茧。 已经采集到18种天敌,包括寄生性天敌11种;捕食性天敌4种。病菌3种。其中特别重要的天敌是松茸毒蛾核多角体病毒。卵期寄生率达51—75%,蛹期死亡率达89%。 试验结果表明,除虫菊脂、敌百虫、敌敌畏和双硫磷对防治幼虫有很好的效果。

This paper reports 146 species of insect in tobacco field including 78 species of insect pest and 68 species of natural enerny, in which 31 species are new record of insect pests in the world and 10 species are new record in China.The relationship between insect populations has been expcoundel under three subjects,i.e.food-web,the seasonal fluctuation of populations and the dominants of natural enemy.Myzus persicae(Sulzer),Holiothis assulta Guenee and Dolycoris baccarum L.are major insect pests on tobacco in...

This paper reports 146 species of insect in tobacco field including 78 species of insect pest and 68 species of natural enerny, in which 31 species are new record of insect pests in the world and 10 species are new record in China.The relationship between insect populations has been expcoundel under three subjects,i.e.food-web,the seasonal fluctuation of populations and the dominants of natural enemy.Myzus persicae(Sulzer),Holiothis assulta Guenee and Dolycoris baccarum L.are major insect pests on tobacco in the region,but Chrysopa septempunctata Wesmael,Campoletis chlorideae Uchida and Trissolcus sp.play quite an important role in preventing these pests populations from developing.Lastly,suggestions for integrated control have been cited.

本文记述了许昌烟田昆虫146种,包括害虫78种和天敌68种(其中31种害虫是世界烟草害虫的新纪录,10种为国内烟草害虫或天敌的新纪录).并从烟田昆虫食物网、群落的季节变化规律及主要害虫与天敌的消长三个方面论述了昆虫种群之间的关系,烟蚜、烟青虫、斑须椿是许昌烟田的主要害虫,草岭、齿唇姬蜂、椿卵蜂分别是抑制其种群数量的优势种天敌。最后,综合讨论了烟草害虫的防治建议。

 
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