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biological control
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  生物防治
     Parasitic rate was 0.05% in biological control site, 0.01% in the control.
     在生物防治区寄生率为0.05%,对照区为0.01%。
短句来源
     The Aprostocetus fukutai is an egg parasitoid of Apriona germari,so it is important to research the parasitizing mechanism of Aprostocetus fukutai for biological control of Apriona germari.
     桑天牛长尾啮小蜂(Aprostocetus fukutai)是桑天牛(Apriona germari)卵期寄生蜂,研究其寄生机制对桑天牛的生物防治有重要意义。
短句来源
     Based on the investigation of physiological characteristics of Cylindrocladium quinqueseptatum, the pathogen of Eucalyptus, bioassays were developed to study the biological control of eucalypt leaf blight by Pseudomonas putida WCS358r and its genetically modified stains WCS358::phl and WCS358::phz, P.fluorescens WCS374r> WCS417r, CHAOr and their siderophore-minus mutants.
     本文对桉树焦枯病菌的生物学特性进行了深入的研究,在此基础上,利用恶臭假单胞杆菌(Pseudomonas putida)WCS358r菌株及其转基因菌株WCS358::phl和WCS358::phz、荧光假单胞杆菌(P.fluorescens)WCS374r、WCS417r和CHA0r以及相应的嗜铁素缺失突变体,开展了桉树焦枯病的生物防治试验。
短句来源
     Integrated contr ol measures such as artificial,chemical and biological control were taken and t h e effect was 89.1%.
     根据其生物学特性采取了以人工防治为主 ,配合药剂防治和生物防治的综合防治措施 ,防治效果达 89.1 %。
短句来源
     Plant parasitic nematodes cause great losses in agricultural production. Hirsutella species colonize nematodes at high rate in nature and are considered as important fungal biological control agents.
     植物寄生线虫是重要的植物病原物,对农业生产造成巨大损失,线虫的生物防治受到人们的极大关注,食线虫被毛孢是重要的线虫内寄生真菌,因其在自然条件下对线虫寄生率高,是线虫生物防治的重要资源。
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  生物控制
     Comprehensive application of biological control techniques for water purification in aquaculture
     生物控制法在水产养殖水质净化中的综合应用
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     2) conducting biological control of exotic weeds;
     (2 )开展外来杂草的生物控制 ;
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     Preliminary report on agricultural ecological environment and biological control of crop insect pests in Xiuyan region
     岫岩农业生态环境与农田害虫的生物控制研究初报
短句来源
     Diseases of Facility Vegetables and Its Biological Control
     设施蔬菜病害及其无公害生物控制技术
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     Study on Biological Control of Fall Webworm by Insect Natural Enemy
     天敌昆虫对美国白蛾的生物控制研究
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  生物学控制
     Latent Infection and Biological Control of Main Postharvest Diseases on Muskmelons (Cucumis Melo L.)
     厚皮甜瓜(cucumis melo L.)主要采后病害的潜伏侵染及生物学控制
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     Mature biofilm can be excluded by physical methods or some certain antibiotics, and biological control is an another possible way.
     已形成的生物被膜可用物理方法或某些抗生素清除 ,而生物学控制是另一可能途径。
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  “biological control”译为未确定词的双语例句
     The Exploration into the Biological Control Mechanism of the Strains BS 1、BS 2
     生防菌株BS_1、BS_2作用机制初探
短句来源
     Biological control of capsicum anthracnose by endophytic Bacillus subtilis BS-2 and BS-1
     辣椒内生枯草芽孢杆菌(Bacillus subtilis)BS-2和BS-1防治辣椒炭疽病研究
短句来源
     Study on Biological Control of Botrytis cinerea by Bacillus subtilis Strains BS-208 and BS-209
     枯草芽孢杆菌BS-208和BS-209菌株防治番茄灰霉病研究
短句来源
     Expression of At7 gene in Bacillus cereus A47 from plant and characterization of the engineered strain on biological control
     At7基因在植物内生芽孢杆菌A47中的表达及生物学功能测定
短句来源
     Two strains,B20-006 and B20-120 ,were efficient biological control agents to control corn sheath blight.
     拮抗菌株 B20-006和 B20-120对纹枯病的防治效果最好,菌液浸种处理苗期防治效果分别为67.9%和62。
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  biological control
This method is good for the reasonable management and biological control of the forests.
      
This parasitoid has the potential to use as an excellent biological control agent for suppressing populations of EAB.
      
These findings would consequentially contribute to the further successfully biological control of the trunk borer.
      
The preparation holds promise as means for biological control of crop pathogens.
      
Trigliceropeptides from pseudomonades: New agents for biological control of pytopathogenic fungi
      
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About 1650 years ago the Chinese farmers had already put biological control inpractice by using yellow citrus ants to control citrus pests. Until now the farmersof Kwangsze district, Kwangtung Province, believe that to liberate the yellow citrus antin citrus orchard is one of the most effective methods to control some of the seriousinsect pests of the citrus trees. The present work mainly deals with the utilization ofOecophylla smaragdina Fabr., in the two main citrus producing places, Hongfon...

About 1650 years ago the Chinese farmers had already put biological control inpractice by using yellow citrus ants to control citrus pests. Until now the farmersof Kwangsze district, Kwangtung Province, believe that to liberate the yellow citrus antin citrus orchard is one of the most effective methods to control some of the seriousinsect pests of the citrus trees. The present work mainly deals with the utilization ofOecophylla smaragdina Fabr., in the two main citrus producing places, Hongfon andVanton in Kwangsze district. The efficiency of O. smaragdina in controlling insect pests of citrus has been ob-served in the orchards by the author. The results are as follows: When there is a sufficient number of O. smaragdina on the trees the control of thecitrus bug, Rhynchocoris humeralis Thunberg, is very effective. No damaged fruits canbe seen under the trees. O. smaragdina gives considerable beneficial results in controlling some insects withbiting mouthparts such as Podagricomela nigricollis Chen, weevils etc., but does not givevery promising results. The number of wholesome leaves on the trees where the antsare distributed is 18.37% higher than those without the ants. Of course, in both casesthe original population of the insect pests is about the same. O. smaragdina does no harm to the activity of the native predators (Rodolia rufo-pilosa Mulsant and Rodolia pumila Weise) of Icerya purchasi. These ladybird beetlesgive very effective control of Icerya purchasi as usual where O. smaragdina is distributed. O. smaragdina does not, however, control the coccids, Lowana sp., and the larvaeof cerambycids. The ants have the phenomena of symbiosis with some species of coccidssuch as Pseudococcus citriculus, Coccus sp., and Icerya purchasi. In orchards where O. smaragdina is distributed no black ants could be found ingeneral, at least the number of the latter is very few. The relation between the yellowcitrus ants and coccids is about the same as that between the common black ants andcoccids in other orchards in South China. There is no special increase in coccid popula-tion. The author concludes that O. smaragdina is not a very ideal natural enemy tocontrol insect pests in citrus orchards. When labour and insecticide could not be suppliedsufficiently the yellow citrus ants can play, however, a certain role in controlling thepests in practice.

本文对我国利用已有悠久历史的黄柑蚁在广东省广四县柑桔区作了调查,并对黄柑蚁消除害虫的实际情况作了观察。 在黄柑蚁数量足够的情况下,对柑桔大绿蝽象(Rhynchocoris humeralis Thunberg)有显著防治效果,对潜叶(虫斧)(Podagricomela nigricollis Chen)、粉绿象甲(Hypomeaes squamosus F.)、铜绿金龟子(Anomala cupripes Hope) 等,也有一定效果,凡有柑蚁分布均匀的树,健叶数比无蚁树多18.3%。 对介壳虫类,青翅羽衣(Lowana sp.),天牛幼虫等,完全无防治作用;与介壳虫类如吹绵介壳虫、棘粉介壳虫(Pseudococcus citriculus)及软腊介壳虫(Coccus sp.)有共生关系。 对吹绵介壳虫的天敌大红瓢虫(Rodolia rufopilosa Mulsant)、小红瓢虫(Rodolia pumilaWeise)的活动没有影响。有黄柑蚁的果园,黑蚁均被驱逐。 作者认为黄柑蚁并不是一种理想的天敌,目前在农药械供应不足及劳动力缺乏的地区,仍具有一定的利用价值。建议开展黄柑蚁过冬保护及人工饲养与放蚁的研究...

本文对我国利用已有悠久历史的黄柑蚁在广东省广四县柑桔区作了调查,并对黄柑蚁消除害虫的实际情况作了观察。 在黄柑蚁数量足够的情况下,对柑桔大绿蝽象(Rhynchocoris humeralis Thunberg)有显著防治效果,对潜叶(虫斧)(Podagricomela nigricollis Chen)、粉绿象甲(Hypomeaes squamosus F.)、铜绿金龟子(Anomala cupripes Hope) 等,也有一定效果,凡有柑蚁分布均匀的树,健叶数比无蚁树多18.3%。 对介壳虫类,青翅羽衣(Lowana sp.),天牛幼虫等,完全无防治作用;与介壳虫类如吹绵介壳虫、棘粉介壳虫(Pseudococcus citriculus)及软腊介壳虫(Coccus sp.)有共生关系。 对吹绵介壳虫的天敌大红瓢虫(Rodolia rufopilosa Mulsant)、小红瓢虫(Rodolia pumilaWeise)的活动没有影响。有黄柑蚁的果园,黑蚁均被驱逐。 作者认为黄柑蚁并不是一种理想的天敌,目前在农药械供应不足及劳动力缺乏的地区,仍具有一定的利用价值。建议开展黄柑蚁过冬保护及人工饲养与放蚁的研究,以期提高和扩大利用价值。

This is a literature review on the new and important developments as to the theoriesand their applications concerning the biological and chemical control of insects of medicalimportance. Under the heading of biological control, Knipling's theory of the use of insects fortheir own destruction together with the recent progress in sterility by means of atomicradiation, experimental studies on chemical sterilants, and the concept of geneticsterility by hybridization is treated and commented at some length....

This is a literature review on the new and important developments as to the theoriesand their applications concerning the biological and chemical control of insects of medicalimportance. Under the heading of biological control, Knipling's theory of the use of insects fortheir own destruction together with the recent progress in sterility by means of atomicradiation, experimental studies on chemical sterilants, and the concept of geneticsterility by hybridization is treated and commented at some length. In the field of chemical control, the author calls attention to the residual fumiganttechnic, the semi-permanent insecticidal resins and the animal systemic insecticides as wellas their significance in insect control at present br in future. In addition, studies on insectattractants and their potential use in insect control are discussed.

本文系一文献综述,重点介绍近来防制医学昆虫研究方面的重大发展,对今后防制研究的方向方法,具有一定的战略战术意义。 首先介绍了新的生物学防制理论和方法。应用射线不育性方法消灭贪食美蝇已在中、北美取得成功,而且创造了区域性灭种的范例。它进一步孕育了昆虫自灭(绝嗣)方法的理论。化学不育性方法正在研究探索中,实验室试验已初步证明某些药物可使蚊蝇不育,乃一新生萌芽。遗传不育性方法尚在假设阶段,能否成功,还待试验证明。 其次在化学防制方面,现已出现几种新的途径。滞留熏蒸杀虫剂可在有人而通风的房舍中使用,其蒸气能熏杀昆虫,但对人比较安全,现已接近应用阶段。家畜动物通过内服药物等途径以毒杀其体内外的寄生或吸血昆虫已有了开端。与上述两法有关的有机磷杀虫剂,其慢性中毒问题。尚须进一步研究。杀虫树脂是一新的剂型,其杀虫毒效远比一般滞留喷洒为持久,且可在擦洗频繁的场所使用,现已推广应用。在诱虫剂方面亦有一定的进展。看来诱虫剂加杀虫剂和化学不育剂可能成为未来防制害虫的有效方式。

An investigation,on the bud and the root with regard to the stubble cane and its pro-duction,had been carried out,during the years 1961 and 1962 in Fukien province,and thepreliminary results were summarized briefly as follows:1.By employing the radio-active element p32 as a tracer,it was shown that the old rootsystem of the stubble was capable of absorption early in the growing season.In so doing,the stubble cane was able to make an earlier start in growth than that of the newly plantedcane.(See tables 1 to...

An investigation,on the bud and the root with regard to the stubble cane and its pro-duction,had been carried out,during the years 1961 and 1962 in Fukien province,and thepreliminary results were summarized briefly as follows:1.By employing the radio-active element p32 as a tracer,it was shown that the old rootsystem of the stubble was capable of absorption early in the growing season.In so doing,the stubble cane was able to make an earlier start in growth than that of the newly plantedcane.(See tables 1 to 3).2.We found that permanent roots appeared on the ratoon,soon after its emergence fromthe stubble cane,while,in contrast,the newly planted cane produced only permanent rootsafter it possessed two true leaves.The ability of the ratoon to produce permanent roots de-pended on the number of bud scales.Usually,the more the number of scales,the earlier andbetter production of permanent roots.(See tables 4 to 5).3.The number of bud scales on buds appearing at different nodes on the same cane wasfound to be different,being more at the basal portion,and decreasing in number toward thedistal end.Likewise,the number of scales on an opened bud was found to be higher thanthose of the unopened ones on the same node in different cane.(See tables 9 to 12).4.New canes arising from buds occurring on the basal portion up to a height fivecentimeters of the residual stock were larger,more vigorous and constituted the effectivecanes in crop production.It was further shown,that the crowded nodes,often enveloped inthe scales of the residual stock,were able to differentiate normal and healthy buds.Themanner and time of the formation of these buds remained as problems to be studied later.(See taables 6 to 8).5.We would like to stress the fact that the performance of the buds and the roots forthe stubble canes referred to above as important factors in sugar cane production,wasintimately linked up with the external factors including cultural operations.The productionof earlier,more and stouter canes was often influenced by a number of cultural treatmentsthey received during the previous season.Among these cultural treatments,we listed thefollowings:(1) harvesting of canes properly conducted;(2) good care and protection ofstubbles through the winter;(3) proper cultivation and preparation of cane beds during earlyspring;(4) adequate fertilization,cultivation and irrigation of the preceding crops;and (5)chemical and biological control measures of pests and diseases well executed.(See tables 13to 28).

通过解剖和应用 P~(32)示踪,明确了各节位蔗芽的构造,老根系的作用,以及根系提早发生的原因。研究了宿根甘蔗的丰产技术,认为破畦松兜的增产效果最为明显。

 
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