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防除
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  control
    Study on Chemical Control of Barnyard Grass[Echinochloa crusgralli (L.) Beauv] in Directly Sowing Paddy Field
    直播稻田稗草[Echinochloa crusgalli(L.)Beauv]化学防除的研究
短句来源
    Experiments on the Summer Maize Field Weed Control by 40% Yiyou SC
    40%乙莠水悬浮剂防除夏玉米田杂草试验
短句来源
    The results showed that benazolin & quizalofop-p-ethyl provided good control effects on weeds in rape fields,the overall effects ranged from 98.82% to 99.94% twenty days after treatment(DAT),decreased and maintained above 92% for 120 DAT with gradual decrease.
    结果表明:17.5%草除. 精喹禾灵乳油对油菜田杂草具有较好的防除效果,药后第20天的总体防效为98.82%-99.94%,随时间的延长药效略有下降,120 d内的控草效果仍可达92%以上;
短句来源
    The control effects of 10.8% haloxyfop-P-methyl EC were above 93% at the rate of 375 mL/hm2, which being sprayed in 2 to 5 leaves stage of rape or in 2 to 5 leaves stage of oat grass. It was safe to spring rape; the yield of spring rape increased by 20%.
    10.8%高效氟吡甲禾灵EC375mL/hm2于油菜2~5叶期、野燕麦2~5叶期喷雾处理,防除野燕麦效果达93%以上,对油菜安全,增产显著,油菜增产达20%以上。
短句来源
    The results showed that excellent weed control performance was achieved when thifensulfuron-methyl 75% WG was applied at the 3~5 leaf stage of corn and within the application dosage of 20~40 g/ha.
    结果表明,75%噻吩磺隆WG对春玉米田间阔叶杂草具有良好的防除效果,安全适宜的用法是在杂草3 ̄5叶期进行茎叶喷雾,用药量以20 ̄40g/hm2为宜。
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  “防除”译为未确定词的双语例句
    A COMPREHENSIVE STUDY ON CONTROLLING WEEDS OF ARTIFICIAL GRASSLAND(1987~1990)
    人工草地杂草防除的综合研究(1987~1990年)
短句来源
    STUDY ON 5.3% BUTACHOR-SIMETRYME DF TO CONTROLLING WEEDS IN PADDY FIELD
    5.3%丁西G防除稻田杂草使用技术研究
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    Study and Application on Effective Technique for Eradicating Citrus Canker
    柑桔溃疡病高效防除技术研究及应用
短句来源
    Studies on the Preventive Effect of 2. 8% Daochuangjing on Weeds of Seed-bed for Drought Bearing-seedling
    2.8%稻床净防除水稻旱育秧苗床杂草研究
短句来源
    The Application of Saturated D-Optimal Designs in Controlling Weeds
    饱和D-最优设计在防除杂草研究中的应用
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  control
Some applications are given to control theory for partial differential equations.
      
Thus, PPARα/γ dual agonists may provide superior therapy to the current PPARγ-selective agonists, due to the additional lipid control afforded by the PPARα component.
      
Study subjects were divided into three groups: subjects in group 1 were microalbuminuric diabetic (n = 33), in group 2 subjects were normoalbuminuric diabetic group (n = 32), and group 3 was formed from nondiabetic healthy control subjects (n = 18).
      
Serum VEGF concentrations were significantly higher in the diabetic groups than in the control group even at the normoalbuminuric stage.
      
Compound IVc indicated the best antibacterial activity compared with the control drug ampicillin (CAS 69-53-4).
      
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When actinomycetes antagonist is cultured in the cotton seed cake and usedas a fertilizer for cotton,a stimulating effect on growth of the plant and a decr-ease of percentage of Verticillium wilt has been observed.The isolates of Actino-mycetes which have shown the best results are G_4 and 5406.Throughout thegrowing period,three applications of the antagonist carried fertilizer show a decr-ease of 31-50% disease and an increase of 14-40% yield.The three applicationsof the antagonist carried fertilizer seem to...

When actinomycetes antagonist is cultured in the cotton seed cake and usedas a fertilizer for cotton,a stimulating effect on growth of the plant and a decr-ease of percentage of Verticillium wilt has been observed.The isolates of Actino-mycetes which have shown the best results are G_4 and 5406.Throughout thegrowing period,three applications of the antagonist carried fertilizer show a decr-ease of 31-50% disease and an increase of 14-40% yield.The three applicationsof the antagonist carried fertilizer seem to be better than that of two applications.However,the yield increase due to the fourth application can hardly cover the costof labour and material. According to the results of a burried-slide test for inspecting the dynamics ofthe antagonist in certain depths of soil,it is found that the actinomycetous isolatesG_4 and 5406 survive a comparativly longer period at a soil depth of 2.5-10 cm.,buttheir amount per unit volume of soil is gradually reduced with time.The anta-gonists are most abundantly distributed at a depth of 5-7.5 cm.It is suggestedthat three applications of the antagonist carried fertilizer may be practical in con-trolling the Verticillium wilt of cotton.

1.1954—1956年在辽陽和北京两地的田間試驗証明:施用“加用抗生菌的肥料”后,不仅能增加棉花的出苗、刺激棉株的生育,并且对黃萎病有显著的防治作用,增产的效果很明显。2.从不同菌种的效能来看,都有防病增产的作用。其中的G_4和5406号抗生菌(均屬放綫菌)的效果最好。进行三次分施时,可减輕發病率31—50%,增加产量14—40%。402号抗生菌种有引起花蕾脫落的恶果;3号及13号虽有显著的防病作用,但增产效能不如G_4。3.不同的抗生菌种混合施用时,沒有表現出增强的作用。4.抗生菌肥料施用的次数,以愈多愈好。在播种前十天作为基肥一次施入者,防病的作用最差,增产作用也不显著。两次分施的,必須在播种时沟施小部份,而将大部份在显蕾期中施入;三次分施的,一般較二次分施的效果高。基肥时不施,单在定苗、显蕾、开花期分施的,对黃萎病的防除效果較大,而对增产作用較小。分四次施肥,所須人工太多,防病、增产的效果并不比三次分施的显著提高。5.根据“埋片法”檢查施入的抗生菌在棉田中消长情况的結果,証明C_4号及5406号放綫菌施入棉田后,在2.5—10厘米深处能維持很长的时間,但其菌量随时間延长而逐漸减少。单施棉籽...

1.1954—1956年在辽陽和北京两地的田間試驗証明:施用“加用抗生菌的肥料”后,不仅能增加棉花的出苗、刺激棉株的生育,并且对黃萎病有显著的防治作用,增产的效果很明显。2.从不同菌种的效能来看,都有防病增产的作用。其中的G_4和5406号抗生菌(均屬放綫菌)的效果最好。进行三次分施时,可减輕發病率31—50%,增加产量14—40%。402号抗生菌种有引起花蕾脫落的恶果;3号及13号虽有显著的防病作用,但增产效能不如G_4。3.不同的抗生菌种混合施用时,沒有表現出增强的作用。4.抗生菌肥料施用的次数,以愈多愈好。在播种前十天作为基肥一次施入者,防病的作用最差,增产作用也不显著。两次分施的,必須在播种时沟施小部份,而将大部份在显蕾期中施入;三次分施的,一般較二次分施的效果高。基肥时不施,单在定苗、显蕾、开花期分施的,对黃萎病的防除效果較大,而对增产作用較小。分四次施肥,所須人工太多,防病、增产的效果并不比三次分施的显著提高。5.根据“埋片法”檢查施入的抗生菌在棉田中消长情况的結果,証明C_4号及5406号放綫菌施入棉田后,在2.5—10厘米深处能維持很长的时間,但其菌量随时間延长而逐漸减少。单施棉籽餅的,在2.5—5厘米深处,也能产生大量的放綫菌,有时較对照(只施化学肥料的)增加2倍,接近于抗生菌肥料中所含的放綫菌数。

In the dry nursery bed,water nursery bed,dry planting field and water planting fieldtrials,pre-sowing applications of sodium PCP at 5 to 20 kg.per ha.did not give good controlof barnyardgrass(Echinochola crusgalli(L.)Beaur.).In the transplanting field trials,pre-transplanting treated with sodium PCP at the rates of15 to 30 kg.per ha.gave a control from good to excellent of barnyardgrass and Cyperusglobosus All..A rate of 30 kg.per ha.applied at one day before the seedlings were trans-planted was most effective,it...

In the dry nursery bed,water nursery bed,dry planting field and water planting fieldtrials,pre-sowing applications of sodium PCP at 5 to 20 kg.per ha.did not give good controlof barnyardgrass(Echinochola crusgalli(L.)Beaur.).In the transplanting field trials,pre-transplanting treated with sodium PCP at the rates of15 to 30 kg.per ha.gave a control from good to excellent of barnyardgrass and Cyperusglobosus All..A rate of 30 kg.per ha.applied at one day before the seedlings were trans-planted was most effective,it gave 92.7% control of barnyardgrass and 79.6% control ofCyperus globosus All.Post-transplanting treated with sodium PCP at 15 kg.per ha.5 daysafter puddling also gave good control of both weeds.With different formulations of sodiumPCP tested(granular,soil-mixed and solution)post-transplant-applications of granular or soilmixed gave better control of barnyardgrass,but a solution was proved to be more effective forthe control of Cyperus globosus All.than the other two farmulations.No treatment caused rice injury.Yields of rice on all plots treated with sodium PCPwere higher than the unweeded plots,but were less than twice hand weeded plots.Unsatisfation for the control of barnyardgrass in the nursery beds and planting fieldswith sodium PCP was discussed.

在旱秧田、水秧田、旱直播田和水直播田的试验中,播前施用五氯酚钠,每公顷5—20公斤,除草效果不够良好。但在插秧本田的试验中,插前每公顷施用五氯酚钠15—30公厅对防除稗草(Echinochloa crusgalli (L.) Beauv.)和球穗莎草(Cyperus globosus All.)的效果极为良好。以在插秧前一天,每公顷施用30公斤效果最好,对稗草和球穗莎草的防除效果分别达到92.7%和79.6%。插后处理,每公顷施用五氯酚钠15公斤,效果也较好。另外的试验,观察了五氯酚钠不同剂型:颗粒剂、混土、溶液等的防除效果。防除稗草用颗粒剂和混土处理要优于溶液处理;防除球穗莎草则以溶液处理为最好。各处理对水稻均无药害,所有用五氧酚钠处理区的产量均高于不除草区,但较两次人工除草的为低。本文讨论了在秧田和直播田用五氯酚钠防除稗草效果较差的原因。

The adult psyllids were collected from the diseased citrus trees andtransferred to young citrus seedlings or budlings in order to test the trans-mission of citrus yellow shoot by the citrus psyllid.In 1973-1978,398 seed-lings and budlings were tested in this manner and 32 plants out of them de-veloped symptoms of yellow shoot. In another experiment, nymphs (mostlyfourth and fifth instars) were collected from the diseased citrus trees andtransferred to young healthy seedlings. When the adults emerged, they weretransferred...

The adult psyllids were collected from the diseased citrus trees andtransferred to young citrus seedlings or budlings in order to test the trans-mission of citrus yellow shoot by the citrus psyllid.In 1973-1978,398 seed-lings and budlings were tested in this manner and 32 plants out of them de-veloped symptoms of yellow shoot. In another experiment, nymphs (mostlyfourth and fifth instars) were collected from the diseased citrus trees andtransferred to young healthy seedlings. When the adults emerged, they weretransferred to young seedlings or budlings in result that 5 out of 56 testplants were diseased. 110 contrelled plants without psyllids developed no sym-ptoms. The preliminary experiment results in that yellow shoot might betransmitted by the adult psyllids. A survey in 27 counties of Kwangsi was made in 1973-1977 to determinethe relation between the occurence of psyllids and the prevalence of citrusyellow shoot. The data obtained show that there is no natural spread of ye-llow shoot and no psyllids in the northern part of Kwangsi. On the otherhand, there usually exist the high population of psyllid in the southern partwhere the yellow shoot disease is epidemic. In some orchards,when in-secticides were frequently used the psyllid might be controlled and the yellowshoot disease was much slighter than those in the orchards without usinginsecticides. It comes to the conclusion that the citrus yellow shoot may beremarkably controlled by wiping out psyllids with insecticides.

1973-1978年用从田间病树上采集的柑桔木虱成虫放饲在398株健康柑桔苗上,有32株发病。用病树上采集的柑桔木虱高龄若虫置健苗上所羽化的成虫放饲的56株,有5株发病。未接虫的110株没有发病。初步说明柑桔木虱成虫可以传病。1973-1977年在广西境内的合浦、三江等27个县(市)调查柑桔木虱分布和柑桔黄龙病流行的关系。从总的趋势看,在北部未见木虱的地区,黄龙病不发生或不流行;在南部有木虱的大多数地区,黄龙病就会流行。北部未见木虱的桔林,从柳州重病苗圃引入的苗木,或用其接穗繁殖的苗木或高接的植株,均有发病,但未见蔓延。在南部有木虱分布的地区,有的果园多次喷洒杀虫剂,较好地防除了木虱,黄龙病很少发生。南部的梧州市红旗公社1965年从病区引进苗木,一部分种在地处缓坡丘陵柑桔木虱发生多的果园,1977年调查时大部植株已挖除,余下少数均为重病株。另一部分种在山冲,1977年调查时未见木虱,园中基本无缺株,查80株仅3株发病。上述情况说明黄龙病的流行与柑桔木虱的分布密切相关。因此严格防除柑桔木虱应列为预防黄龙病的一项重要措施。

 
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