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提高防治效果
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  increase control effect
     (3)Priority of the antagonist inoculation could distinctly increase control effect,two antagonists combination was better. The disease index of susceptible pine(Pinus massonia,P.yunnanensis,P.tabulaeformis)could decrease to 13~15,the disease index of resistant pine could control to about 3%.
     (3)预先接种颉抗菌能显著提高防治效果,两种菌联合处理防效更优,感病树种(马尾松、云南松、油松)的感病指数可降至13~15,抗病树种的感病指数可控制在3%左右;
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  raise control effect
     It is verified that electrostatic spraying maypromote spraying performance,raise control effect ,reduceenvironmental pollution and savecontrol expenses.
     证实了静电喷雾可以改善喷雾性能、提高防治效果、降低环境污染和节省防治费用;
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  “提高防治效果”译为未确定词的双语例句
     Take as an example of experiment on the control of Bemisia tabaci biotype B,25% Actara WG with 0.1% silwet can improve the control effect by over 10% while decreasing the pesticide dosage by over 20%.
     以用25%阿克泰防治B型烟粉虱为例,在杀虫剂中加入有机硅助剂丝润1000倍液可以降低农药使用量20%以上,提高防治效果10%以上。
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     Objective To predigest the detection procedure of 6 species of pathogenic bacteria of Vibrionaceae .
     目的 简化副溶血弧菌等 6种弧菌科常见病原菌的检测程序 ,缩短报告时间 ,提高防治效果
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     Bacillus thuringiensis WP could be mixed with phoxim granule(3%) or 20% acephata EC,to increase the control effect and reduce the residue.
     也可把优打可湿性粉剂与3%辛硫磷颗粒剂或20%乙酰甲胺磷混用,以提高防治效果和降低农药残留。
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     Comtining chemical control with sex pheromone can reduce the use of chemical insecticide. It is the method that will maintain the environment and conserve the natural enemies and thus increase the control effect.
     在虫口密度大的地区,可先用杀虫剂压低虫口密度,再使用性信息素进行控制,使性信息素与化学防治相结合,减少化学农药的使用,有利于保护环境和害虫天敌,从而提高防治效果
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     Mixing up the insecticides would improve the effect and the best combination is 40% dimethoate (1 :500), 50% methamidophos (1 : 1500) and 80% DDVP(l : 1500), spraying it is effective to control. The main faithful control periods are early May, the second are the early August.
     药剂混合使用能提高防治效果,其最适组合是,40%氧化乐果500倍液、50%甲胺磷1500倍液、80%敌敌畏1500倍液喷雾防治,防治适期主要在5月上旬,其次在8月上旬。
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     Making Full Play of Military Hospitals Advantages to Better Prevent SARS
     提高防治SARS效果
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     Technique Method of Prompting Control Effect of Bacillus thuringiensis
     提高苏云金杆菌防治效果技术的研究
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     Conclusion The multimedia courseware can improve the efficiency of teaching.
     提高了教学效果
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     which improves the teaching effects.
     提高了教学效果
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     Objective To elucidate the mechanism of the retarding effect of ahylysantinfaretase on the bladder cancer cells.
     目的提高防治膀胱肿瘤复发和转移的效果
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The apple fruit borer, Carposina niponensis Walsingham, is a major insect pest of Chinese date in Lao-ling district, Shangtung Province. In recent years, about 15-20% or more of the crop is ruined annually by this insect. Investigations on this insect were conducted at Laoling district in 1962-63. The apple fruit borer has one complete generation and a partial second generation annually. The proportion of the second generation was markedly influenced by the time of emergence of the first generation. The apple...

The apple fruit borer, Carposina niponensis Walsingham, is a major insect pest of Chinese date in Lao-ling district, Shangtung Province. In recent years, about 15-20% or more of the crop is ruined annually by this insect. Investigations on this insect were conducted at Laoling district in 1962-63. The apple fruit borer has one complete generation and a partial second generation annually. The proportion of the second generation was markedly influenced by the time of emergence of the first generation. The apple fruit borer passes the winter as full-grown larva encased in a thick, elliptical cocoon in the top 4 inches of the soil. It was shown that the "winter-cocoons" are centered around the tree trunk. The emergence of the overwintering larvae extends from mid June to mid August. Rainfall has great influence on the time and rate of emergence of the overwintering generation. Under laboratory conditions, the prepupal and pupal stage is 10.4 days for the overwintering generation, and 10.8 days for the summer generation. Mating usually takes place in midnight. The preoviposition period is 2.5—2.7 days in average, the oviposition period is 1.3—3.1 days. The average number of eggs laid by one female of the overwintering generation is 27.9 and 40.5 for the summer generation, with a maximum of 154. Under field conditions, most eggs are deposited on the under surface of the leaf (72.6%), the rest being deposited on the surface of the fruit close to the stalk. Eggs can be found from the middle of July to the beginning of September. The incubation period of the eggs is 6.8 days in average for the first generation and 8.4 days for the second generation. The percentage of hatching of eggs for the first generation is 92.3%, and 89.5% for the second generation. Newly hatched larvae of the first generation bore into the fruit in the end of July. The larval period lasts for 9-16.8-28 days. The full-grown larvae of the first generation start to leave the fruit in the mid August. The seasonal life cycle records are presented in Fig. 1. The application of 3%-γ BHC as ground dust, at a rate of 16 catties per mow, gave a good control of the overwintering larvae coming out to the ground surface in spring ready for pupation, 0.125% DDT emulsion spray with 0.01% sodium dibutyl naphthalene sulfonate or 0.1% glue as spreader gave a good control of the newly hatched larvae. Results from a large scale field test showed that one application of 3%-γ BHC as ground dust and two applications of 0.125% DDT emulsion with a spreader gave a good control of this insect. The percentage of good fruit increased from 9.4—27.2% as compared with the checked plot.

据1962—1963年两年的研究,桃小食心虫在乐陵棗区一年发生1—2代。第二代发生数量多少与当年整个发生期的早晚有密切的关系。桃小食心虫以老熟幼虫結“越冬茧”在土內越冬,其垂直分布深度限于离土表4寸范围內,平面分布愈近树干密度愈大。越冬幼虫自6月中旬开始出土,一直延續到8月上、中旬結束,盛期在7月中旬左右。越冬幼虫出土与降雨有密切关系。在室內越冬幼虫出土及第一代老熟幼虫脫果后至成虫羽化历期,分别平均为10.4天及10.8天。成虫白天不活动,夜間11—1时之間交尾。产卵前期平均为2.5—2.7天,产卵期間平均为1.3—2.1天。雌虫平均产卵量为27.9粒(越冬代)和40.5粒(第一代),最多可产154粒。在田間,卵绝大多数产在叶片背面基部(72.6%),产在果实梗洼(27.4%)和胴部较少,其它部位尚未发现。田間卵自7月中、下旬开始发生,至8月下旬或9月初結束。第一、二代卵期分別平均为6.8和8.4天,孵化率分別为92.3%和89.5%。幼虫扎果从7月末 (或8月初) 起至9月中、下旬棗采收,前后达50天左右。幼虫脫果从8月中旬起,至9月中、下旬棗采收后尚未結束。果內幼虫期最短9天,最长28天,平均16.8天左...

据1962—1963年两年的研究,桃小食心虫在乐陵棗区一年发生1—2代。第二代发生数量多少与当年整个发生期的早晚有密切的关系。桃小食心虫以老熟幼虫結“越冬茧”在土內越冬,其垂直分布深度限于离土表4寸范围內,平面分布愈近树干密度愈大。越冬幼虫自6月中旬开始出土,一直延續到8月上、中旬結束,盛期在7月中旬左右。越冬幼虫出土与降雨有密切关系。在室內越冬幼虫出土及第一代老熟幼虫脫果后至成虫羽化历期,分别平均为10.4天及10.8天。成虫白天不活动,夜間11—1时之間交尾。产卵前期平均为2.5—2.7天,产卵期間平均为1.3—2.1天。雌虫平均产卵量为27.9粒(越冬代)和40.5粒(第一代),最多可产154粒。在田間,卵绝大多数产在叶片背面基部(72.6%),产在果实梗洼(27.4%)和胴部较少,其它部位尚未发现。田間卵自7月中、下旬开始发生,至8月下旬或9月初結束。第一、二代卵期分別平均为6.8和8.4天,孵化率分別为92.3%和89.5%。幼虫扎果从7月末 (或8月初) 起至9月中、下旬棗采收,前后达50天左右。幼虫脫果从8月中旬起,至9月中、下旬棗采收后尚未結束。果內幼虫期最短9天,最长28天,平均16.8天左右。地面药剂处理应該在6月中、下旬越冬幼虫出土前,这是第一个防治关鍵时期;在第一、二代卵盛期(7月下旬及8月中旬左右),噴药两次是防治桃小食心虫的第二个关鍵时期。地面药剂处理,3%666粉剂与3%666颗粒剂效果差不多。树上喷药可用25%DDT乳剂250倍液加用0.01%“拉开粉”或0.1%水胶,可以提高防治效果

This paper deals with the control of European corn borers (Ostrinia nubilalis Hub.) by using trichogrammatid parasites (Trichogramma dendrolimi Matsumura and T.ostriniae Pang et Chen) in 1974 at Zhou County of Shantung Province.The aimsof this study were to ascertain the suitable time and frequency of parasite releases,the number of parasites released per unit area,and the effect of supplementary treatment with pathogenic microbes.Attention was also paid to the influences of the mode of crop planting,crop vigor,and...

This paper deals with the control of European corn borers (Ostrinia nubilalis Hub.) by using trichogrammatid parasites (Trichogramma dendrolimi Matsumura and T.ostriniae Pang et Chen) in 1974 at Zhou County of Shantung Province.The aimsof this study were to ascertain the suitable time and frequency of parasite releases,the number of parasites released per unit area,and the effect of supplementary treatment with pathogenic microbes.Attention was also paid to the influences of the mode of crop planting,crop vigor,and the density of host eggs upon the effectiveness of the control.The results showed that the effectiveness in corn borer control was obvious,the percentages of parasitized host eggs in the treated fields generally amounted to 70-90%,and the rates of control reached to 60-80%.The suitable number of parasites released each time per mu was 10,000 which would bring forth a rate of parasitism about 80%.The time of release was important in influencing the rates of parasitism which ranged from 82.6% at the initiative stage of host oviposi-tion to 34.8% at the peak of ovipovsition.The effective frequency of parasite release was decided by the duration of host ovipositing activity and the time required to complete the development of the parasites at the prevailing field temperatures.For each host generation releases of three to four times would be enough.The growth status of the corn crop also contributed to the success of this control measure and the vigorous corn plants usually yielded the better results.After parasite releases the residual corn borers could be furhter eliminated by the application of Bacillus thuringiensis and Beauvcria bassiana if necessary.

本文系1974年在山东省邹县进行赤眼蜂防治玉米螟的研究结果。重点是摸索放蜂时间、次数、数量和蜂菌配合的防治效果,同时还探明了玉米的不同播种方式、长势及玉米螟落卵量的不同与放蜂效果的关系。研究结果表明:利用赤眼蜂防治玉米螟效果明显,卵寄生率一般可达70—90%,防治效果达60—80%。赤眼蜂每次放逢量一般以1万头为宜,寄生率可达80%左右,蜂量再多似无必要。放蜂时间要掌握在卵初期,防治效果可达82.6%,若在卵盛期放蜂,防治效果降低34.8%。放蜂的次数主要根据玉米螟全卵期的长短和赤眼蜂在当时的田间温度下发育一代所需时间而确定,一般放蜂3—4次即可。玉米的长势与赤眼蜂寄生率的关系极为密切,长势好的地块赤眼蜂的寄生率明显高于长势差的地块。以蜂灭卵,以菌扫残(幼虫),蜂菌配合可明显提高防治效果

The pr(?)sent paper deals with two Rhembis leafhoppers——Hishimonus sallatus and Hishimonoides sellatiformis, which are vectors of the mulberry dwarf disease. Their morphological characters, bionomics, predaters, control, measures and Prognosis are discussed.

本文报道了对桑萎缩病的两种媒介昆虫——凹缘菱纹叶蝉和拟菱纹叶蝉的研究成果,包括其形态特征、生物学特性、天敌、防治方法和预测预报。两种菱纹叶蝉在外观上不同,拟菱纹叶蝉体较大,带褐色,而凹缘菱纹叶蝉较小,带黄绿色。它们复翅后缘都有一个三角形大斑,当两翅合拢时呈菱形纹。两者的生活史比较相似,但其生活习性有很大差异。凹缘菱纹叶蝉具杂食性(已知有23种寄主植物),和寄生转移等习性,拟菱纹叶蝉食性单一,桑是主要寄主植物。它们一年发生四代,桑园内虫口密度第一代最高,第二、三代非常低,到第四代重新回升。天敌有卵寄生蜂、虫寄生菌和很多捕食性蜘蛛。防治上用敌敌畏、敌百虫、马拉硫磷、乐果、六六六、杀螟松等,为了提高防治效果可采用虫卵胚子发育阶段进行预测预报。

 
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