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防效
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  control effect
    The control effect were 96.7% with 3% Fenoxycarb at 3 000 times after the third instar larvae.
    用3%高渗苯氧威乳油4 000倍液喷冠防治3龄后大幼虫,防效为96.7%。
短句来源
    The control effect of spraying B fertilizer,chlorlthalonil and applying smoke reached 67.5%,69.7% and 66.1% respectively.
    叶面喷施硼砂防效达67.5%,喷百菌清油烟剂的防效为69.7%,采用杀菌烟剂防效达66.1%;
短句来源
    40% oil omethoate in 1000 to 1500 times to control 3rd instar larvae 95% in control effect;
    用40%氧化乐果乳油机动喷烟防治3龄前幼虫,防效达95%;
短句来源
    2.5% oil decis in 2000 to 3000 times to control 1st-3rd instar larvae 93% in control effect.
    用40%氧化乐果乳油1 000~1500倍液、2.5%敌杀死乳油2 000~3000倍液喷雾防治1~3龄幼虫防效均达93%;
短句来源
    In the closed forest with crown density at 70%,smoky agent Dima and lindane in 18kg/hm2 to control 1st -3rd instar larvae can generate 90% in control effect.
    在郁闭度0.7以上的林分,用18 kg/hm2敌马烟剂、林丹烟剂防治1~3龄幼虫,防效达90%。
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  prevention effect
    The Trichoderma sp.synergist and its stable method as well as the application in the production have been studied. The results show that the prevention effect rate is higher than 70% while the recurring rate is 10%.
    研究Trichoderma sp.制剂的增效与稳定方法,以及在生产中的应用,其防效在70%以上,复发率为10%左右。
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  “防效”译为未确定词的双语例句
    The chemical control of weeds in a nursery of poplar indicated that the control efficiency on main weeds was above 90% through the closed soil treatment with 43%(acetochlor+oxyfluorfen) EC at a dose of 100 mL/666.7 m2,and the soil treatment had no bad effect on the growth of poplar.
    杨树苗圃化除试验表明,43%乙果EC100mL/666.7m2土壤封闭处理对主要杂草的防效达90%以上,对杨树生长无不良影响;
短句来源
    Also the low position and directional mist spray of 20% paraquat AS or 41% glyphosate AS had nearly the same effect.
    灭生性除草剂20%百草枯AS、41%春多多(草甘膦)AS在严格控制条件下,采用杨树间低位定向喷雾处理,对大多数杂草的防效在90%以上,对苗木也比较安全。
短句来源
    Ptyomaxia sp. was controlled with Bt at the concentration of 8~10 IU/mL in mangrove forest, and the average lethality was 90.61%.
    在林间,用8~10IU/mL的Bt稀释液喷雾对海榄雌瘤斑螟进行防治实验,平均防效为90.61%.
短句来源
    As for mix chlorpyrifos withbuprofezin at the ratio of 11:20, the mortalities reached 94.18% after 14 days and 80.63% after 21 days when this mixrure was at the concentration of 1:400, at the concentration of 1:800, the mortalities were 78.65% after 14 days and 69.71% after 21 days.
    其次为毒死蜱与扑虱灵11:20混剂,混剂1:400倍液的总体防治效果药后14天达94.18%,21天达80.5%; 1:800倍液药后14天总体防治效果为78.65%,21天后的总体防效为69.71%;
短句来源
    The writers got some results by intercropping soybean and using Trefluralin. Treflan in 1982. When medicinal volume used was 3kg/ha, the weeding effect on monoeotydons was 99.4% on dicotyledons was 98.4% and the total effect was 87%.
    在杨树人工林行间种大豆施氟乐灵(Trefluralin. Treflan)进行灭草,1982年在本所试验地中测得的施药量3kg/ha(商品量)灭单子叶杂草效果99.4%,双子叶98.4%、总防效83%。
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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.
      
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  prevention effect
In order to study the prevention effect of selenium in the development of cardiovascular disease, we investigated the effects of selenium supplementation on the blood rheological properties.
      
Calcium had a consistent prevention effect on the rate of bone loss in the 12 studies of calcium supplements in postmenopausal women.
      
From these results, the authors conclude that natural organic germanium has the best prevention effect for intestinal cancer in this animal model (P>amp;lt;0.01), followed by organic germanium (P>amp;lt;0.05).
      
However, there is no difference in the cancer prevention effect of germanium provided one month before and during dimethylhydrazine treatment, and during dimethylhydrazine treatment only.
      
CONCLUSIONS: Eight ppm selenium providedviadrinking water has a significant intestinal cancer prevention effect in the presence of a high dose of DMH (20 mg/kg×20 weeks), and the cancer therapeutic effect of selenium is doubtful in this animal model.
      
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In planting poplars, big plant and space are usually needed. So it needs to pay high cost for manual and mechanical work, In order to enhance level of overall management, agricultural crops could be intercropped on the plantation, from which economic effect can be obtained. Chemical weeding can not only culture crops without ploughing, but it needn't weed particularly for the plantation.The writers got some results by intercropping soybean and using Trefluralin. Treflan in 1982. When medicinal volume used was...

In planting poplars, big plant and space are usually needed. So it needs to pay high cost for manual and mechanical work, In order to enhance level of overall management, agricultural crops could be intercropped on the plantation, from which economic effect can be obtained. Chemical weeding can not only culture crops without ploughing, but it needn't weed particularly for the plantation.The writers got some results by intercropping soybean and using Trefluralin. Treflan in 1982. When medicinal volume used was 3kg/ha, the weeding effect on monoeotydons was 99.4% on dicotyledons was 98.4% and the total effect was 87%. Specially, weeding effect on E. Crusgalli was 99.6%. The information from agriculture research organization showed that the production of soybean field used Trefluralin was increased by 15%—20% and competing water and fertilization with trees was reduced.Based on the data, the writer found that tree height increased by40% and tree diameter growth increased by 8% compared with the comparisons. So, the use of chemical weeding by Trefuralin is good for both forest and agriculture,

营造杨树人工林多是采用大株行距,抚育时需要较高的人工或机械费用。为了提高综合经营水平,在行间种植农作物可以实现多条渠道经济收益。在株、行间进行化学灭草又可以使农作物免耕,林地也不需要单独进行锄草。在杨树人工林行间种大豆施氟乐灵(Trefluralin. Treflan)进行灭草,1982年在本所试验地中测得的施药量3kg/ha(商品量)灭单子叶杂草效果99.4%,双子叶98.4%、总防效83%。特别是灭稗草(E.Crusgalli)效果可达99%—99.6%。根据农业科研单位提供资料施用氟乐灵在大豆田间灭草可使数量提高15%—20%。由于杂草减少,与树木争水争肥的现象也减少。根据1982年在杨树人工林试验地测得平均高生长量与对照区相比增加4%,平均胸径生长量与对照区相比增加8%。杨树人工林施用氟乐灵灭草是林农一举双得的好措施。

Screenings of chemical herbicides to eliminate weeds in forests have been conducted in the nurseries, young stands, planting sites and fire preventing lines. In the Pine and Fir nurseries, Goal or Nitrophen was used to kill the weeds with an effect of over 90 %; Pines, Firs,broa-dleaf trees and fruit tr-ees, which are high than 1 m, were treated with leaf or needle spray of Glyphosate with an effect of over 85 %; on the planting sites, leaf surface sprays of Glyphosate, 2,4-DA, Glyphosate + Fosamine or Velpar...

Screenings of chemical herbicides to eliminate weeds in forests have been conducted in the nurseries, young stands, planting sites and fire preventing lines. In the Pine and Fir nurseries, Goal or Nitrophen was used to kill the weeds with an effect of over 90 %; Pines, Firs,broa-dleaf trees and fruit tr-ees, which are high than 1 m, were treated with leaf or needle spray of Glyphosate with an effect of over 85 %; on the planting sites, leaf surface sprays of Glyphosate, 2,4-DA, Glyphosate + Fosamine or Velpar + Glyphosate were treated to kill weeds and shrubs with an effect of 95 %; on fire preventing lines, Glyphosate + Forsamine or Glyphosate + Velpar would achieve good results.

从1974~1990年,在苗圃、幼林、造林地及防火线上筛选适用的除草剂,结果表明:松、杉苗圃以除草醚、果尔作土壤处理,防效达90%以上,高于1m的松、杉、阔叶树、果树以草甘膦作叶面喷洒,防效达85%以上;造林地以草甘膦、2,4-D丁酯、草甘膦+调节膦及威尔柏+草甘膦作叶面喷洒,防杂草、灌木效果达95%,防火线上以草甘膦与调节膦或威尔柏混用为好。在室内生测表明:草甘膦+调节膦有增效作用,草甘膦具有解偶联剂作用,抑制膜上ATP酶活性。

A rust-control test was conducted for 3 y.The results indicated that the effective cure lies in scientific culture and intensive management. Chemicals like piperalin proved good to a certain degree. When applied in the disease outbreak area, they produced an instant effect and thus prevented the disease from spreading. The resistance test showed that kwangsi bamboo is immune to culm rust. With a hard texture and fine grain, its bamboo strips are good for making summer sleeping mats. The effects of Tsc1 and Tsc2...

A rust-control test was conducted for 3 y.The results indicated that the effective cure lies in scientific culture and intensive management. Chemicals like piperalin proved good to a certain degree. When applied in the disease outbreak area, they produced an instant effect and thus prevented the disease from spreading. The resistance test showed that kwangsi bamboo is immune to culm rust. With a hard texture and fine grain, its bamboo strips are good for making summer sleeping mats. The effects of Tsc1 and Tsc2 against culm rust are to be further studied.

水竹杆锈病是水竹生产中的重要病害。通过3年防治试验,结果表明:连年加强水竹栽培管理,使营林措施科学化是控制本病的有效措施。粉锈灵等化学农药有一定防效,在发病中心使用,见效快,效果好,有防治本病扩展蔓延的作用。通过抗性测定,假毛竹不感染锈病,且材质坚韧,纹理细密,篾性好,适于编织凉席,可推广应用。两种细菌(Tsc_1和Tsc_2)防治竹杆锈病的效果有待进一步研究。

 
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