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防效     
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  control effect
    Test showed that:0 5%Abamection had better control effect against Plutella xylostella L ,During1~5 days It's control effect could reach 91 24%~93 83% with 0 4~0 5g Key words:Abamectin Plutella xylostella L Control effect
    田间试验表明 :0 .5%阿维菌素对小菜蛾有较好的防治效果。 667m2 用有效成分 0 .4g~0 .5g处理药后 1~ 5d的防效达 91 .2 4 %~ 93.83%。
短句来源
    The results of toxicological test showed that abamectin-Bacullus thuringiensis WP had remarkable synergistic effect on Plutella xylostella L in green-house, and its co-toxicity coefficient was 150 1 The control effect against Plutella xylostella L was 66 3%~85 2% on the third day after treatment, 86 1%~95 6% on the 7th day after treatment at the rate of 1125~1500ghm -2 in field
    室内毒力测定结果表明 ,阿·苏 WP对小菜蛾有明显的增效作用 ,其共毒系数为 15 0 .1。 大田试验结果表明 ,阿·苏 WP112 5~ 15 0 0 g· hm-2药后 3d对小菜蛾防效为 6 6 .3%~ 85 .2 % ,药后 7d达86 .1%~ 95 .6 %。
短句来源
    The control effect of 10% Cypermethrin is 89.82%.
    用 10 %灭百可防治 ,防效达 89.82 %。
短句来源
    ③if the plants were inoculated with an-thracnose pathogen,Colletotrichum higginsianum,immediately after spraying BS-2 suspension,the best control effect was obtained,the effects in the third and sixth day were 95.12% and46.71% respectively;
    ③菌株对白菜炭疽病有较好的防治效果,但对不同时间接种病原菌的防治效果有所不同,以叶表面喷雾接种菌液后,立即接种病原菌的防效最好,其第3天和第6天的防效分别达95.12%和46.71%;
短句来源
    The results showed that the control effect of beta-cypermethrin 4.5% EC 20-30mL together with phoxim 40% EC 50mL per 667m2 against Spodoptera litura before 4th instar within 1 -7days after spraying were 90% , which were better than that of chlorfenapyr 10% SC 50mL per 667m2. The mixtures were economical, effectual and safe, and especially suitable for non-polluted vegetable use.
    结果表明,每667m2用4.5%高效氯氰菊酯乳油20-30mL+40%辛硫磷乳油50mL对斜纹夜蛾 4龄以下幼虫,药后1-7d的防效可达90%以上,优于10%溴虫腈悬浮剂50mL的效果。 两者混用具有经济、高效、安全的优点,适合于“无公害”蔬菜上使用,具有推广应用前景。
短句来源
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  control effects
    Their suitable concentrations for field spraying are 3 500 - 4 500,3 500-4 000,3 000-4000 and 2000-3000 times, respectively. The corresponding control effects are 88.6% - 91.2% ,87.6% - 90.7% ,86.7 - 87.2% and 85.2% -86.9% .
    3500~4000倍、3000~4000倍、2000~3000倍时,防效最佳,依次为88.6%~91.2%、87.6%~97.7%、86.7%~87.2%和85.2%~86.9%.
短句来源
    In laboratory test,the toxicity of G_P 1:400 dilution to six species of aphids tested after 48h was 92.4%~97 9% and the half lethal concentration of G_P insecticide to six species of aphids was 1:1620~2008.In the field tests,the control effects of G_P 1:400 dilution to aphids on cotton and fruit trees were 91.1%~96 8%.
    室内毒效测定结果表明,GP杀虫剂400倍对供试6种蚜虫48h的毒效为924%~979%,对6种蚜虫的致死中浓度为稀释1620~2008倍。 田间小区试验表明,G_P400倍液对棉蚜和果树蚜虫2d的防效为911%~968%;
短句来源
    Demonstration of the control on cotton aphid in hot season brought about the average control effects of 93.2%~96 6% in the cotton field(390hm 2).
    大田防治棉花伏蚜示范390hm2,平均防效达932%~966%。
短句来源
    The 24%Yiqing EC which is a new combined for-mulation of organophosphorus and pyrethroid insecticides,have high synergisrn to control diamondback rnoth,Plutellaxvlostella(L.) ,The co-toxicity coefficient exceeds 260.Thecontrol effects of combined formulation in fields are between82.5%and 94.5%, whereas the cornponents by thernselveshave lower control effects between 7.3%and 67.9%.
    24%乙氰乳油是有机磷和拟除虫菊酯的二元复配制剂,对小菜蛾共毒系数在26O以上,对小莱蛾的田间防治效果在82,5~94。 3%M之间,而其他药剂防效在7.3~67.9%之间
短句来源
    G P 1∶200 and 1∶400 dilutions gave approximate control effects of more than 95% in field small plot tests and the demonstration also brought about the effects of 94.6% and above.
    田间小区试验和大田示范G-P200和400倍液对麦蚜与菜蚜2天防效均达95%。
短句来源
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  “防效”译为未确定词的双语例句
    The Relationship between the Defensive Effect of Chitosan on MDMV and the Activity of Defensive Enzyme in Maize Lesves
    壳聚糖对MDMV的防效与玉米叶片防御酶活性的关系
短句来源
    Antifungal Activity of Penicillium striatisporum Strain P.st10 and Its Inhibition against Pepper Blight Caused by Phytophthora spp.
    一株疫病拮抗青霉P.st10菌株的抗菌活性及其对辣椒疫病的盆栽防效
短句来源
    29% BeiLu EC,40% JiaXin EC and 50% KuaiLin WP got better effect on Tessaratoma papillosa Drury;
    2 9%蜱·氯 EC、4 0 %甲·辛 EC、50 %快啉 WP对荔枝蝽的防效较好 ;
短句来源
    Field experiments showed that Avermectin with 8ppm had above 95% killing effect for 10 days.
    田间试验结果 ,灭虫灵 8ppm防效 95 %以上 ,持效期 10天 ;
短句来源
    ·hm -2 would have a good efficacy.
    hm-2 就可以得到很好的杂草防效
短句来源
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  control effect
Flutter control effect and mechanism of central-slotting for long-span bridges
      
The control effect of central-slotting depends on the aerodynamic configuration of the original girder section and the corresponding central-slotting width.
      
The control channel is divided into two channels (fast and slow) for enhancing the speed of response at a significant range of the control effect.
      
Simulation results indicated that the proposed controller exhibits satisfying control effect.
      
The activities of enzymes responsible for lignification in pepper, pre-inoculation with arbuscular mycorrhizal (AM) fungus ofGlomus intraradices and/or infection with pathogenic strain ofPhytophthora capsici, and the biological control effect ofG.
      
更多          
  control effects
However, the absence of pronounced control effects of most metabolites on the studied enzymes allows us to assign them to a relatively inert pool of metabolites.
      
Several different types of porous wall/cavity systems are tested to investigate the passive control effects.
      
The two logics have been tested under various driving conditions to investigate their control effects.
      
A model is described that allows one to compensate for the influence of perturbing factors and mutual influence of control effects on neighboring regions.
      
The wind-control effects of shelterbelts with different structures (close-spaced, wider-spaced, and widest-spaced) were investigated by portable wind vane and anemometer, wet and dry bulb thermometer, ground thermometer, glass service instrument.
      
更多          
  biocontrol effect
Protease inhibitors, trans-epoxysuccinyl-L-leucylamido-(4-guanidino)butane (E64), antipain hydrochloride, and a mixture of inhibitors, but not pepstatin A, fully or partially nullified the biocontrol effect of T39.
      
atrum, resulting in a biocontrol effect, only takes place in necrotic plant tissue.
      
Evaluation of biocontrol effect of wild-type and mutant Trichoderma strains on the development of Botrytis cinerea disease symptoms on bean leaves.
      
Evaluation of biocontrol effect of wild-type and mutant Trichoderma harzianum strains on bean seeds in Rhizoctonia solani-infested soil.
      
Several bacteria that exhibit a biocontrol effect on some common bean pathogens have been isolated in our laboratory.
      
更多          
  biocontrol efficiency
were utilized to improve the biocontrol efficiency of the mycoparasitic fungus Trichoderma harzianum by increasing the copy number of the basic proteinase gene prb1.
      
In pot trial, no significant difference on biocontrol efficiency against grapevine crown gall was found between the wide type E26 and its quorum sensing negative mutants.
      


gasicles hygrophila Selman & Vogt

安心莲子草叶甲是生防所1986年从美国Florida引入,该虫在我国湖南省中部及湖北地区。由于冬季温度太低,不能自然越冬。1987年进行了成虫冬季人工保护和接种释放越冬后成虫技术的研究,11~12月在田间采集成虫,1~4月在温室盆栽空心莲于草上饲养。在1~2月下旬温室温度5~10℃下,叶甲能保持低度活动,3月间温室停火后开始产卯,冬季在温室中能繁殖两代。5月上旬将成虫按每公顷3000头释放在空心莲于草为害的水域,至11月中、下旬,叶甲能在田间繁殖7~8代,1988~1991年应用上述技术对湖南省1500公顷水域的空心莲子草进行防治,取得了明显的防效

Experiments were conducted to study the susceptibility of 3 species of rangeland grasshopper to Nosema locustae in Xinjiang. Result showed the susceptibili ty of Dociostaurus kraussi was 86.3%, but that of Caliiptamus italicus a nd Gomphocerus sibiricus were 34.5% and 17.7% only. Adding 4 ml of 50% mala t ion to 100g Nosema locustae bran, the rate of population reduction of Cali iptamus italicus was 76.7%, which was much higher than that of using Nosema locustae alone. It seems...

Experiments were conducted to study the susceptibility of 3 species of rangeland grasshopper to Nosema locustae in Xinjiang. Result showed the susceptibili ty of Dociostaurus kraussi was 86.3%, but that of Caliiptamus italicus a nd Gomphocerus sibiricus were 34.5% and 17.7% only. Adding 4 ml of 50% mala t ion to 100g Nosema locustae bran, the rate of population reduction of Cali iptamus italicus was 76.7%, which was much higher than that of using Nosema locustae alone. It seems that in a moderate grasshopper year, only applying Nosema locustae bran would suppress the population density under the control i ndex (10 head/m 2). But, in the years of grasshopper outbreak, Nosema locusta e bran should be mixed with small dosage of insecticide tp improve the control effect.

在新疆用微孢子虫对3种草原蝗虫进行室内感病性试验,结果不同种蝗虫的感病率差异很大,红胫戟纹蝗的感病率高达83.5%,而意大利蝗和西伯利亚蝗仅分别为34.5%和17.7%。用飞机在草原喷洒,微孢子虫饵剂每100克加50%马拉硫磷4ml和10ml,对意大利蝗和红胫戟纹蝗虫口减退率可增加到76.7%和76.0%,明显高于单用微孢子虫饵剂的杀虫效果。作者认为在一般蝗虫发生年份,单用微孢子虫饵剂可压低虫口到防治指标(10头/m2)以下,蝗虫发生量大的年份,采用加微量农药的微孢子虫饵剂,既可提高防效,也可比单用农药减少对环境的副作用

aboratory atomization of three speies of Chafer grubs by

在室内用绿僵菌液喷洒3种金龟子幼虫,黄闪丽金龟、棕色鳃金龟和直蜉金龟子的感病率分别为90.2%、50.0%和83.3%。用黄闪丽金龟子幼虫作试验,在室内观察不同施用菌剂的方法对该虫的防效,结果土壤中施用菌剂,在菌土比为1:1250时,防效为86.2%;用菌剂拌麦种(菌剂麦种比为1:10)防效为62.5%;在小麦出苗后分3次施用菌液,防治效果为64.8%。

 
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