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示范试验     
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  demonstration trials
     The pot experiment of two years and the field and demonstration trials showed that there was a significant effect on protection and cure for the disease and pest of wheat by using the seed-coating agent of ultra-fine dust.
     通过两年的盆栽、田间小区及示范试验表明,超微粉体种衣剂在春小麦上应用,能有效地防治散黑穗病、腥黑穗病、根腐病等,防治效果86%左右;
短句来源
     Dursban plus fipronil 48% EC provided excellent control efficacy of rice planthopper and leaf roller in field plot and demonstration trials.
     田间小区和示范试验结果表明,48%绿丰EC对稻飞虱和纵卷叶螟有良好的防治效果。
短句来源
     While used the same dosage in field demonstration trials, it provided 78.4% control efficacy against rice planthopper and the leaf protection and control efficacy against rice leaf roller were both above 80% at 10 d after treatment.
     示范试验药后10d,对稻飞虱的防效为78.4%,对纵卷叶螟的保叶和杀虫效果在80%以上。
短句来源
  demonstration experiment
     its productive demonstration experiment was conducted in the field of medium Rhizomania access in2001,the root yield,sugar content and sugar yield increased by127.5%,1.68°S and154.7%respectively,and disease index decreased by33.0in comparison with CK (Tianyan303).
     2001年在中度(3级)丛根病地进行了生产示范试验,根产量、含糖率、产糖量分别比对照提高127.5%、1.68度和154.7%,病情指数降低33.0。
短句来源
     In Heilongjiang demonstration experiment in 2003 (four trial areas), the mean root yield was 41273.9kg per ha and increased by 17.88% in comparison with Tiandan2;
     在2003年的黑龙江省甜菜品种生产示范试验中,4个试验点平均块根产量为41273.9kg/hm~2,比对照种甜单二号提高17.88%;
短句来源
     In order to make the adequate effect of Si-Ca fertilizer on rice,made the large area demonstration experiment by applying Si-Ca fertilizer as base fertilizer by450~750kg /667m 2 .The result showed,Si-Ca fertilizer made percentage of effective tiller increase by23.3%,percentage of fruitful spike by0.7spikes,increased production by4.3%~18.1%,had a certain effect on improving disease resistant capability of rice.
     为充分发挥硅钙肥在水稻上的应用效果,进行了硅钙肥作基肥450~750kg/hm2的大面积示范试验。 结果表明,硅钙肥可使水稻有效分蘖率提高23.3%,平均单株成穗数增加0.7穗,增产4.3%~18.1%,对提高水稻的抗病能力也有一定作用。
短句来源
     Field Demonstration Experiment of Grape Downy Mildew Control with a 50% Flumorph Plus Fosetyl-Aluminium Package Mix
     50%氟吗啉+乙膦铝防治葡萄霜霉病田间示范试验
短句来源
     Through two year's demonstration experiment in the wheat field, a high yield of 6930kg/ha and a high efficiency,i. e. water productive efficiency, of 2.34kg/m 3 are obtained.
     经过两年度田间示范试验,取得了高产(6930kg/ha)、高效(水分生产效率达2.43kg/m3)的效果
短句来源
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  demonstration test
     The production demonstration test in 2000-2001 had proved that the conclusion is correct.
     2000~2001年度两年的生产示范试验证明,这个结论是正确的。
短句来源
     Yi Feng Su Field Synergia Demonstration Test
     益丰素田间增效示范试验
短句来源
     In this study, agents screening, pot and plot experiments and demonstration test were employed to screen the fungicide formulation and clearify the effect of acephate thiram triadimefon ultra fine dust seed coating agent on the control of disease and pests of wheat and maize in earlier stage of growing period.
     通过药剂筛选、盆栽试验、田间小区和大田示范试验对乙福酮超微粉体种衣剂的杀菌剂配方筛选及其对小麦玉米前期病虫害防治效果进行研究调查得出 ,福 :酮 =4∶ 1复配剂是种衣剂中杀菌剂的理想配方 ;
短句来源
     Simultaneously, during the units starting up the grain scale-up effect of catalysts has been found and solved, and the heat effect has been investigated further, which provide many basic datum for engineering design and lay a foundation to10 thousand ton-level industry demonstration test.
     同时在装置开车过程中 ,发现了催化剂粒度放大效应 ,提出了相应的解决措施 ,进一步考察了反应热效应 ,为工程设计积累了丰富的基础数据 ,为下一步的万吨级工业示范试验奠定了基础。
短句来源
  demonstration experiments
     The results of the demonstration experiments in 1997 and 1999 were that the average control effects of disease resistant pharmaceuticals with 15 kg/hm 2 on leaf blast and head blast were 89 9% and 84 4% respectively,both of which were higher than that of 20% tricylazole 1 000 times.
     1997和1999年两试点的示范试验结果表明,施诱抗剂15kghm2对叶瘟和穗瘟的平均防效分别为899%和844%,均高于20%三环唑1000倍液的防效.
短句来源
     Plot experiments and demonstration experiments for testing control effects of disease resistant pharmaceuticals on Pyricularia oryzae were conducted at Longshan County and You County from 1996 to 1999. Broadcasting disease resistant pharmaceuticals with sand soil in primary disease development stage of rice blast and inthe last booting stage had significant control effects on leaf blast and head blast.
     为检验诱抗剂防治水稻稻瘟病的效果,1996~1999年在湖南省攸县和龙山县进行了小区试验和示范试验. 用诱抗剂在稻瘟病发病初期和孕穗末期拌细砂土撒施,对叶瘟和穗瘟都有显著的防治效果.
短句来源
     More than 40 sugarcane varieties or clones were introduced into Songxin area of Ningnan County from 2003 to 2005. The comprehensive characters of these varieties or clones were better than the check variety (Guitang11) for the Chuanzhe 23、Yunzhe 94-375、Guitang 94-119 and Yunzhe 95-128 in variety comparative and demonstration experiments.
     2003~2005年,四川宁南县松新蔗区引进40多个甘蔗新品种。 经过多点次的品比及示范试验,初步选育出川蔗23号、云蔗94-375、桂糖94-119和云蔗95-128等4个综合性状优于对照种桂糖11号的甘蔗新品种。
短句来源

 

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      demonstration trials
    This paper reviews the ecological and ecophysiological bases for interspecific interactions based on data from site-specific research and demonstration trials from temperate agroforestry systems, primarily from temperate North America.
          
    These results were confirmed in large-scale demonstration trials conducted in commercial orchards in 1994 and 1995.
          
    Large-scale demonstration trials in commercial orchards supported these findings.
          
    Bt cotton was first introduced on the Makhatini Flats in 1997 when 4 farmers planted demonstration trials on their plots.
          
    Conversely, validated models could be used to gain regulatory approval for phytoremediation without the need for lengthy demonstration trials.
          
    更多          
      demonstration experiment
    In a related demonstration experiment, the frequency-doubled diode laser is applied to excite the λ=369.5 nm 2S1/2-2P1/2 transition of ytterbium ions in a hollow-cathode discharge.
          
    A system of criteria is discussed which is necessary for the realization of a direct gamma-lasing demonstration experiment (DGLDE) as a basis for a specific gamma laser (GL) scheme.
          
    The demonstration experiment has been proved useful in elementary thermodynamic courses for introducing the entropy concept.
          
    A demonstration experiment in one of these counties revealed that patients who normally require hospitalization at the state institution could be treated at the county facility.
          
    In a demonstration experiment, a 80-ns pulse of kilowatt power with frequency modulation in a 5% band was compressed to a 1.5-ns pulse with a 25-fold power amplification.
          
    更多          
      demonstration test
    A general probability model for a start-up demonstration test is studied.
          
    The joint probability generating function of some random variables appearing in the Markov dependence model of the start-up demonstration test with corrective actions is derived by the method of probability generating function.
          
    The probability generating function of number of trials for the start-up demonstration test with rejection upon d failures is derived.
          
    Demonstration test of AgX-10 adsorbent using radioactive methyl iodide tracer was performed.
          
    The product was used as a substitute for chemical surfactants in a clean-up demonstration test carried out by Cargo Fleet Chemical Company Ltd.
          
    更多          
      demonstration experiments
    Demonstration experiments were carried out in the FT-1 tokamak.
          
    These probing systems were tested in demonstration experiments using the FT-1 tokamak.
          
    Classical demonstration experiments on electricity and magnetism at the faculty of physics of Moscow State University
          
    Historical demonstration experiments in Analytical Chemistry
          
    Demonstration experiments are presented in a bench-top poiseulle flow and a 5,000 gallon water channel facility.
          
    更多          


    Experimental results obtained both in laboratory and in the field plots showed that the dusting of lime on leaves of infected plants was effective to a certain extent in controlling the disease. But the method is not considered to be practicable, because the disease becomes serious only in rainy seasons, and the lime applied on the plants is easily washed away by rains. Since the disease is confirmed to be chiefly carried by seeds, a field control experiment was conducted to combat the disease by using disinfested...

    Experimental results obtained both in laboratory and in the field plots showed that the dusting of lime on leaves of infected plants was effective to a certain extent in controlling the disease. But the method is not considered to be practicable, because the disease becomes serious only in rainy seasons, and the lime applied on the plants is easily washed away by rains. Since the disease is confirmed to be chiefly carried by seeds, a field control experiment was conducted to combat the disease by using disinfested seeds. Seeds were collected from disease affected fields, and were treated with 0.5% solution ef granosan or ceresan for 3 hours or with 0.2% solution of granosan for 15 hours. A total of 13055 kilos of treated seeds were sown and grown in 768 mows of rice fields, while a total of 2689 kilos of non-treated seeds grown in 239 mows of rice fields were used as control. The results showed that the treated seeds gave rise to very much fewer diseased seedlings in the seed beds, and that the severity of the disease was very much lighter in the treated fields than in the control. It is thus concluded that the seed treatments stated above were not effective enough to completely disinfest the seeds. Another field control experiments by using disease-free seeds were also conducted. Seeds collected from disease-free fields were used, and the weeds especially the Leersia hexandra Swartz. around the fields were eradicated. The same experiment was carried out 4 times consecutively in a field of more than 100 mows in Canton in the years of 1956 and 1957, and again in a field of 3600 mows in Chung-Hwa district in the Spring of 1958. The results all turned out fine, and the disease was successfully controlled in all cases. But since the Leersia weed has not yet been confirmed to be a natural host of the disease, its eradication may not be necessary in the field control of the present disease. This remains to be a problem that needs further investigation.

    1955年室內和大田噴撒石灰粉的防治試驗結果說明,在雨后天晴的情况下噴撒石灰粉有一定的防治效果。 1958年春曾进行了1007亩(其中对照239亩)种子消毒的防治試驗。用0.5%的西力生或賽力散燜种3小时,或用0.2%西力生浸种12小时,种子发芽率不受影响,苗期发病率显著降低,大田发病日期稍为延迟,发病严重度大为減輕。 1956—1957年早晚季連續四次(每次試驗面积100亩以上)进行换用无病田种子及剷除李氏禾杂草的大田防治試驗,防治結果都很好。1958年春季在从化县街口公社国星大队成功地完成了大面积(3600亩)的防治示范試驗,全部不发病。但是,李氏禾是否本病的野生寄主,剷除李氏禾在防治上是否必要,尚有不同看法,有待进一步研究。

    This paper reports the results of studies on the nuclear polyhedrosis virus-of the cotton bollworm Heliothis armigera.The virus was isolated in 1974 from dead boll-worms collected from cotton fields in Chinchow district of Hupeh Province.It was designated as VHA-273.It is observed that the polyhedra are hexagonal,pentahedron,cubical or irregular in shape,varying from 1.25 to 5.0 p in diameter.Serious pathological changes were in the fat-body,epidermis,tracheal matrix and other tissues of the diseased insects...

    This paper reports the results of studies on the nuclear polyhedrosis virus-of the cotton bollworm Heliothis armigera.The virus was isolated in 1974 from dead boll-worms collected from cotton fields in Chinchow district of Hupeh Province.It was designated as VHA-273.It is observed that the polyhedra are hexagonal,pentahedron,cubical or irregular in shape,varying from 1.25 to 5.0 p in diameter.Serious pathological changes were in the fat-body,epidermis,tracheal matrix and other tissues of the diseased insects and the former two seemed to be the most susceptible tissues.The muscle bundles were not affected.Our bioassay showed that the susceptibility of the larvae to the NPV varied with dosage,larval instar and temperature.The first and second instars were the most susceptible stages;and their mortality rates at 1×106 PIBs/ml were 85% and 80% and the time lasting were 6 and 8 days respectively.Larvae of fifth and sixth instars were not so susceptible,especially when the temperature exceeded 33℃.Cross infections of the NPV with tobacco budworm,Heliothis assulta,was susccessful.In 1975,from July to September,field tests with the NPV to control bollworms were made in cotton fields about 102 mil's at Kung-an County of Hupeh Province.The concentrations used were 1.5×1010 PIBs/mu,3×1010 PIBs/mu and 6×1010 PIBs/mu.The results showed that the NPV was better than the chemical insecticides 1605+DDT.Combined use of the NPV with dilute sevin and Bacillus thurin-giensis suspensions were also tested;and the results were either better or as effective as the NPV or sevin used alone.The application of the NPV VHA-273 to control bollworms in the field seems promising.

    自1973—1974年以来,在湖北荆州地区微生物站筛选出一批棉铃虫病毒毒株,其毒力均为80%以上,有的高达100%。其中毒力较强而又比较稳定的VHA-273,经病虫组织切片观察,确定其为核多角体病毒。1974—1975年除对棉铃虫病毒病的组织病理变化作了初步观察外,又继续在室内外对病毒的毒力、剂量与虫龄、温度的关系,及寄主饲料对病毒产量的影响等,进行了一系列的试验,并用VHA-273生产部分病毒,为大田防治试验作了准备。 1975年7—9月,用VHA-273生产的病毒,在湖北公安县雷州公社约102亩的早发棉田进行示范试验,对第2代及第4代棉铃虫的防治效果,先后调查了5次,最后对试验田、对照田及邻田又作了天敌调查,结果均表明试验田的虫口下降率,花、蕾及青铃受害率等,均低于1605+DDT及西维因的对照田,为棉田的生物防治提供了有希望的微生物农药。 VHA-273棉铃虫核多角体病毒,对烟青虫的毒力很强,对两种害虫能交叉感染。因此,它可用于烟青虫的防治。

    The tobacco aphid or peach aphid is the major insect pest of tobacco in Yunnan.

    本文系1975—78年在云南玉溪烟区进行的研究结果。烟蚜茧蜂在玉溪终年可以找到寄主产卵寄生,没有越冬滞育现象。发育周期长短与温度有明显关系,25—27℃,一代厉期为9—13天,其中卵期1—2天,幼虫期4—5天,预蛹期1—2天,蛹期3—4天。成虫饲喂糖液,寿命7,8天,最长11天。冬季温低(15℃),寿命较长,平均13.6天,最长40天。雌蜂羽化后可立即交配产卵寄生,产卵1,2天后进入高峰期,产卵高峰期一般3—4天。产卵期较长,在整个成虫期均可产卵寄生。每雌蜂在供给过量寄主时(每日50头成蚜),一生平均产卵量为189.4粒,日平均为24.7粒。寄生蚜虫数为127.6头,每蜂平均在每头寄主蚜虫体内产卵1.5粒。 利用简易薄膜温室饲养蚜虫繁蜂,简便易行。田间散放防治示范试验结果表明,在烤烟生长期,连续释放烟蚜茧蜂可有效地控制烟蚜的发生在防治水平以下。其效果比喷施45%乐果乳剂1000倍液优越。

     
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