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防效显著
相关语句
  obvious protection effect
    Through the machinery performance test, quality check and test, and the effective test of pest control at the productive field, it shows that the machinery has good performance, positive quality, convenient to be operated, and has the obvious protection effect;
    通过机具性能试验、质量检测和田间生产防治病虫害效果试验,表明机具性能良好、质量可靠、使用方便、防效显著;
短句来源
  expresses significant control effects
    The results showed that the average disease incidence rate decreased from 28.47%(1996) to 6. 51%(1997), 5. 41%(1998) and 2. 32%(1999), and the average relative control effect of TMV is 64. 4%(1997), 69. 5%(1998) and 88. 5%(1999) respectively, which expresses significant control effects.
    TMV花叶病平均病株率由1996年(试验前)的28.47%下降至1997年的6.51%、1998年的5.41%、1999年的2.32%,平均相对防效1997年为64.4%、1998年为69.5%、1999年为88.5%,防效显著
短句来源
  effects of control is significant
    Trough the measurement of drug efficiency indoor and prevention control test in the field,the results show that the effects of control is significant when spraying insecticide such as 80% DDV with 1/1 000 concentration or 2.5% Decis with 1/2 000 concentration,2.5% Cyhalothrin with 1/4 000~1/3 000 concentration,30% Thiodan with 1/3 000 concentration.
    经室内药效测定和田间防治试验结果表明,采用80% 敌敌畏1 000 倍、或25% 溴氰菊酯2 000 倍、25% 三氟氯氰菊酯3 000~4 000倍、30% 赛丹3 000倍,防效显著
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  “防效显著”译为未确定词的双语例句
    broadcasting dust-mixed 3% Carbofuran G 1.5~2.0 kg/mu upon the plants a week later after transplanting seedling or spraying water-mixed 40% Isofenphos methyl EC 75ml/mu.
    插秧后1周用3% 呋喃丹G1.5~2.0kg/mu,拌细土撒施或40%甲基异硫磷Ec75ml/mu,兑水喷雾,防效显著.
短句来源
    (2)In plot experiments, 75.0~93.8g/hm~2 of betafenvalerate whose effect on the pest was so singificant that it protected 90% cotton bolls with 8.5~14.1% increase in cotton production was equivalent to 150g/hm~2 of fenvalerate or racemicfenvalerate in controlling cotton bolloworm.
    (2)小区试验每hm~275.0~93.8g与氰戊菊酯和消旋菊酯150g的效果相当,对棉铃虫的防效显著,保蕾效果均在90%以上,增产幅度为8.5%~14.1%;
短句来源
    A test of control tea comphor scale with 40% methidathion EC and 25% phosmet EC during the incubation period in tea plantation was conducted in 1996. The results showed that both 40% methidathion EC diluted to 1000~2000 times and 25% phosmet EC diluted to 400 times were effective to control the insect,and the former was excellent effect for 22 days.
    1996年对蛇眼蚧发生较重的茶园,在其孵化期用40%杀扑磷乳油和25%亚胺硫磷乳油进行防治试验。 结果表明,40%杀扑磷乳油1000~2000倍液、25%亚胺硫磷乳油400倍液对蛇眼蚧均有良好防效,尤以40%杀扑磷防效显著,持效期可达22天。
短句来源
    4~5kg 53%Ben·Bian/hm 2 had much better effective than 50% Dingcaoan after 28 days.
    每公顷用 5 3%苯·苄WP4~ 5 kg,药后 2 8d的总体株防效显著高于 5 0 %丁草胺 EC
短句来源
    g/m 2. This was a safe and low cost pesticide, 8%~10% lower than similar pesticides in cost.
    该药对水稻安全、防效显著 ,且比同类产品成本低 8%~ 10 %。
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Based on the cultural characters, host ranges and morphological characters, the causal organism of cucumber blight was identified as phytophthor melonis Katsra. But the mycelium of the fungus was often swollen with a knob-like appearance and the secondary sporangia produced by successive proliferation through the empty ones.Fusarium epuiseti var bullatum and Pseudomonas spp. isolated from the diseased plant were found to be non pathogenic,but their presence would help aggravate the disease, and the diseased...

Based on the cultural characters, host ranges and morphological characters, the causal organism of cucumber blight was identified as phytophthor melonis Katsra. But the mycelium of the fungus was often swollen with a knob-like appearance and the secondary sporangia produced by successive proliferation through the empty ones.Fusarium epuiseti var bullatum and Pseudomonas spp. isolated from the diseased plant were found to be non pathogenic,but their presence would help aggravate the disease, and the diseased plants died back quickly. If the temperature was velatively high after inoculation, the disease developed more rapidly.Some chief varieties of summer and autumn cucumbers of Guangzhou district were screened for resistance from June to November in 1981. There were some differences in the disease resistance among them, but none was highly resistant. The varieties"Summer Green No.2"and"Autmn Green No. 10" showed a comparatively higher degree of resistance.In pot experiments, the treatment of soil with 65% Dexon at a concentration of 1/1000 was found to be effective for controlling the disease. It gave the most satisfactory result when soil disinfection was integrated with a foliage spray with the same concentration. Dexon at a concentration of 200 P.p.m inhibits completely the growth of the pathogen, in vitro, although a few sporangia might be produced occasionally. The result of this experiment provides a basis for further field studies.

黄瓜疫病菌的培养性状、寄主范围及大部分形态与瓜疫霉(Phytophthora melonis Kat-?ura)基本一致。但病菌的菌丝有明显的肿胀及瘤状结节,新孢子囊是以层出方式产生的。 黄瓜疫霉菌侵染植株后,镰刀菌及细菌可乘虚而入,进行第二次侵染,加重病势。接种后遇高温,病害迅速发展。抗病性测定说明在广州地区栽培面积较大的夏、秋黄瓜品种中,尚无高抗品种,以“夏青2号”及“秋青10号”抗病性稍强。 盆栽试验证明:65%敌克松(吉林产)1000倍液防效显著,以播种前土壤施药与生长期喷药相结合的方法最好。敌克松200ppm完全抑制体外病原菌的生长,即使还能形成孢子囊,数量也极少。这些试验结果为田间防治试验提供了依据。

The blister disease(Olpidium viciae Kusano)of broad-bean is one of the major diseases in the plateau north-west Sichuan province.It is dis-

蚕豆疱疱病是川西北高原春蚕豆的主要病害之一,发病面积约6万亩。罹病茎、叶起疱,一般因病减产20%左右。病原为巢豆油壶菌(Olpidium viciae)。巢豆油壶菌及其所致病害发生于日本,我国尚属初次发现。该菌寄主范围广,易见的自然寄主为蚕豆、豌豆和歪头菜。在人工接种下,除可侵染大豆、菜豆、箭舌豌豆、兵豆等多种豆科作物外,也能侵染油菜、结球甘蓝、大白菜、萝卜、黄瓜、南瓜、莴苣、菠菜、荞麦等作物。以病株残体内的休眠孢子囊在土内越冬,翌春萌发侵入寄主,在寄主细胞内形成游动孢子囊,通过出管释放单鞭毛游动孢子进行再侵染,潜育期13~18天。游动孢子亦起配子作用,结合形成双鞭毛游动合子,以合子侵入。后期在寄主细胞内形成休眠孢子囊。本病的防治,除实行3年轮作制可有效减轻病害外,发病初期喷洒甲基托布津、多菌灵、三唑酮、代森锌、波尔多液等药剂均有显著防效。目前大面积推广甲基托布津防治,防效达70~80%,经济效益明显。另用长效内吸剂三唑类药剂处理种子,防效显著,但对出苗率有一定影响,其实用性还待研究。

Laboratory and field tests showed that cotton aphides were very susceptible to pyrethroids e. g. deltamethrin, cypermethrin, flucythrinate, and fenvaterate. Their control effectiveness in the fields was marked. Smearing stems with monocrotophos slow-release-formutation was more effective than with omethoate. Seed dressing with methyl-phosfolan granule can control cotton aphides, but it has some inhibition of cotton growth in its early period.

室内试验和大田药效试验结果表明:棉蚜对拟除虫菊酯杀虫剂溴氰菊酯、氯氰菊醋、氟氰菊酯、杀灭菊酯十分敏感,大田防效显著。久效磷缓释剂涂茎对棉蚜的防治效果大于氧乐果。甲基硫环磷颗粒剂拌种可以防治棉蚜,但对棉花生长前期有些抑制作用。

 
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