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pinus
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  松属
    Resistance of 23 pine species and 105 provenances of 5 pine species and 13 tree species of Pinaceae other than Pinus to pine wood nem-atode were determined.
    通过23种松树、5种松树的105个种源及13种非松属树木对松材线虫Bursaphelenchusxylophilus的抗性研究,结果表明:供试松树的抗性差异很大,火炬松、班克松、刚松均未感病。
短句来源
    Ips and Dendroctonus are regarded as attacking bark beetle and all species bore and damage Pinus.
    齿小蠹和大小蠹一样,都被认为是最具进攻性的树皮小蠹,该属小蠹都以松属植物为寄主。
短句来源
    Monochamns alternatus Hope (Coleoptera:Cerambycidae) is not only a serious pest to Pinus but also the main vector of pine wood nemadote Bursaphelenchus xylophilus, which causes pine wilt disease.
    松墨天牛是一种钻蛀性的林业害虫,主要危害松属植物,而且其传播松材线虫造成的危害远甚于其自身。
短句来源
    Almost all of the trees other than Pinus were diseased except Cedrus deodara.
    除雪松外,其它12种非松属树木均感病。
短句来源
  
    ON THE INFECTION OF PINUS MASSONIANA BY PINE WOOD NEMATODE,BURSAPHELENCHUS XYLOPHIUS
    马尾(Pinus massoniana)感染材线虫(Bursaphelenchus xylophilus)的研究
短句来源
    DISCOVERY OF A "M"-FORM STRAIN OF NEMATODE (Bursaphelenchus xylophilus) FROM DYING PINE TREES (Pinus thunbergii) ON SHESHAN MOUNTAIN IN SHANGHAI
    上海佘山发现黑材线虫(Bursaphelenchus xylophilus)M型株系
短句来源
    An Investigation on Bark Beetles of Pinus armandi in the South Slopes of the Qinling Mountains
    秦岭南坡华山小蠹调查
短句来源
    A Study on the Disease Resistance in Pinus yunnanensis under Different Water Conditions (Ⅰ)
    不同水分状况下云南抗病性的研究( Ⅰ)
短句来源
    A Study on the Disease Resistance in Pinus yunnanensis under Different Water Conditions(Ⅱ)
    不同水分状况下云南抗病性的研究( Ⅱ)
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  “pinus”译为未确定词的双语例句
    A STUDY ON THE BLISTER RUST OF PINUS SYLVESTRIS VAR.MONGOLICA
    樟子松疱锈病的研究
短句来源
    Study on Quantity Classification of Ecological Factors of Pinus massoniana Stands in Quzhou
    衢州市马尾松林生态因素数量分类的研究
短句来源
    EXTENSION AND APPLICATION OF CONTROL TECHNIQUES OF PINUS TABULAEFORMIS SEED AND CONE INSECTS
    油松种实害虫防治技术的推广和应用
短句来源
    FUZZY EVALUATIONOF ECOLOGICAL CHANGE AFTER FIRE IN PINUS YUNNANENSIS
    云南松林火灾后生态变化模糊评价
短句来源
    A Preliminary Study of Spider Communities in Pinus messoniana Forests in Hunan Province
    湖南马尾松林蜘蛛群落研究初报
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  pinus
Comparative Analysis of Plant Diversity of Pinus tabulaeformis Forests in Ten Regions of Beijing Mountainous Areas
      
Based on investigations during 1998-2003, shrubs and herbs, as well as indicators of similarity and diversity in Pinus tabulaeformis forests of ten regions around Beijing were compared and analyzed, and protection measures were suggested.
      
Results indicated that in the woodland of Pinus tabulaeformis, soil bulk density increased with the depth at different sites, while in the woodland of Robinia pseudoacacia, soil bulk density was higher than that in P.
      
This study is based on Quercus mongolica, Fraxinus mandshurica, Phellodendron amurense, Juglans mandshurica, Tilia amurensis, and Pinus koraiensis trees of the same age (12 years) and seedling origin under the same site conditions.
      
amurensis, and Pinus koraiensis were 516.36, 234.00, 625.93, 945.83, 507.93, and 286.21 cm3/(cm2·h), in July, June, September, August, August, and July, respectively.
      
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The peach leaf hopper, Erythroneura sp., is one of the important insect pests of thepeach tree in Kiangsu Province. There were four overlapping generations a year. Theoverwintering adults became active in the middle of March, and migrated immediately tothe peach trees as soon as the young leaves sprouted out. They could not develop on theleaves of broad bean, cabbage and radish. The appearance of adult stage of each generation was as follows:The overwintering adults hid among several evergreen trees such as...

The peach leaf hopper, Erythroneura sp., is one of the important insect pests of thepeach tree in Kiangsu Province. There were four overlapping generations a year. Theoverwintering adults became active in the middle of March, and migrated immediately tothe peach trees as soon as the young leaves sprouted out. They could not develop on theleaves of broad bean, cabbage and radish. The appearance of adult stage of each generation was as follows:The overwintering adults hid among several evergreen trees such as Juniperuschinensis var. Kaizuca Hort., J. chinensis L., Biota orientalis (Linn.)., Cryptomeria japo-nica D. Don., Pinus massoniana Lamb., Myrica rubra Sieb. et Zucc. It was found thatabout 30% of these adults survived even at a low temperature of --20℃ in late Feb-ruary. Chemical control experiments were carried out both in the laboratory and in theorchards. The results indicated that the malathion miscible oil (25%) at the dilution of1:1,000--2,000 was the most effective spraying formulation, which gave 100% mortalities4 hours after treatment, while 30% parathion and 50% ethion (1240) at the dilution of1:1,000 and 1:500 respectively also gave satisfactory control and exhibited comparativelylonger residual effects. The DDT miscible oil (25%) at the dilution of 1:250 was alsoeffective for controlling this species, which gave 100% mortalities 24 hours after spray-ing in the orchard, and showed the longest residual effect.

桃一点叶蝉在长江流域为桃的重要害虫,据在南京、徐州、洞庭东山等地调查,为害桃的叶蝉共有4种即:桃一点叶蝉Erythroneura sp.,小绿叶蝉Empoasca flavescens,大绿叶蝉Cicadella viridis及棉叶蝉Chlorita biguttula。以桃一点叶蝉为主。它的主要寄主是桃,其他尚有杏、李、中国樱桃、贴梗海棠、月季、苹果、梨等。桃一点叶蝉在南京一年发生四代,以第四代成虫在常绿树如龙柏、侧柏、柳杉、桧柏、马尾松、杨梅上越冬。至早春桃现蕾萌芽时,从越冬寄主上大部分直接迁飞到桃上,少量可到其他寄主上,4月以后都集中到桃上,直到晚秋开始作越冬之迁飞。至11月中下旬全部迁到常绿树上越冬。 室内药效测定结果:25%马拉松乳剂,30%E-605及25%DDT乳剂效果最好,41%敌百虫效果不好,效果最差的是10%γ666乳剂。两次田间防治试验结果与室内一致。在桃园内为避免经常使用DDT而引起螨类的大发生,可采用马拉松,E-605来代替或与DDT混合使用防治桃一点叶蝉及其他桃树害虫。

The damping-off of the coniferous seedlings was a serious problem in the Northeast China.In nurseries of Larix olgensis,Pinus sylvestries var.mongolica,P.koraiensis,P.tabulaeformis,and P.densiflora suffered 25%,20%,20-30%,and 10% loss respectively during 1956 to 1961.Much higher disease incidence sometimes occurred in other nurseries.Five types of damping-off were recognized.These were pre-emergent rot,topple-overdamping-off,root-and hypocotylrot,top-killing or rot,and under crowding seeding and dampconditions,the...

The damping-off of the coniferous seedlings was a serious problem in the Northeast China.In nurseries of Larix olgensis,Pinus sylvestries var.mongolica,P.koraiensis,P.tabulaeformis,and P.densiflora suffered 25%,20%,20-30%,and 10% loss respectively during 1956 to 1961.Much higher disease incidence sometimes occurred in other nurseries.Five types of damping-off were recognized.These were pre-emergent rot,topple-overdamping-off,root-and hypocotylrot,top-killing or rot,and under crowding seeding and dampconditions,the blight of one-or-two-year-old seedlings also occurred.Among these types,thetopple-over damping-off was more common and severe,but such kind of damping-off was ab-sent in the nurseries of P.koraiensis.During the period from 1956 to 1961,isolations were made from 7844 damping-off seed-lings of different nurseries from 22 localities and three causal organisms belonging to namelyRhizoctonia,Pythium,and Fusarium were obtained.Among them,Rhizoctonia spp.was themost prevalent.Under crowed conditions and with high air humidity,Rhizoctonia spp.alsoattacked the above ground parts of one or-two-year-old seedlings,causing the seedling blight.The degree of damage due to the damping-off in the nurseries was highly correlated withthe location of the nurseries and the cultural practices.The damage was usually muchgreater when the nurseries were situated at the lower ground with higher water table or atthe foot of hill-side.Great damage was also associated with high rate of seeding.It wasshown that those cultural practices which promoted the earlier emergence of the seedlingsreduced the disease infection.Thus a method was adopted in the nurseries by mixing theseeds with fine sands and snow together and keeping them in cellar during the winter,and afterthat soaking the treated seeds with water for several days before sowing in order to hastenthe germination.Thus a good stand of seedlings with little damage of seedling blight re-sulted.

松苗立枯病是东北地区针叶树育苗上的重要问题,其中以落叶松、樟子松、和红松等幼苗发病较重,油松和赤松等幼苗发病为轻。幼苗发病征状有土内腐死、猝倒、立枯、地上腐烂、和一、二年生大苗发生枯萎落叶等五个类型。诱致松苗发生侵染性立枯病的病菌,有 Rhizoctonia、Pythium 和 Fusarium等三种菌类,其中 Rhizoctonia 尤为主要。松苗立枯病发生的轻重与育苗措施有密切关系,地势低洼或位于山脚下坡的苗圃或苗床,一般发病较重。种子经雪藏混砂催芽处理后,能提早种子萌芽、出土和齐苗,有降低发病程度的作用。光照多少对幼苗发病有影响。根据苗圃的调查观察,全光育苗发病率低,遮蔭育苗发病率高;但在沈阳试验结果还不能证实这一点,相反的半遮蔭育苗要好些。

According to the results obtained in 1956 to 1961,the occurrence of damping-off in theconiferous nurseries generally first appears in the middle of May,prevails in the end of Mayto the middle of June,and stops in the beginning of July to the middle of August.In average,the duration of damping-off in nurseries continues about two months or even more,but theprevalent period lasts only twenty to thirty days.The dates of the first appearance and theperiods of duration,however,varied with different localities,years,and...

According to the results obtained in 1956 to 1961,the occurrence of damping-off in theconiferous nurseries generally first appears in the middle of May,prevails in the end of Mayto the middle of June,and stops in the beginning of July to the middle of August.In average,the duration of damping-off in nurseries continues about two months or even more,but theprevalent period lasts only twenty to thirty days.The dates of the first appearance and theperiods of duration,however,varied with different localities,years,and kinds of conifers.The soil temperature for disease development is over a range of 11 to 30° with an optimumat 18 to 25℃,but each causal organism tends to have a different optimum.Thus Rhizoctoniadamping-off usually occurs at 18 to 22℃,Pythium at 17 to 20℃,and Fusarium at 23 to 28℃.Therefore,Rhizoctonia and Pythium are secured in the early period of the growing season,lateron when the soil temperature goes up,the fusarial damping-off seedlings may be obtained.However,if the soil temperature is rather high in the early growing season,Fusarium mayalso be isolated from the diseased seedlings and when the conditions reverse,the percentageof diseased seedlings due to Fusarium infection goes down again.This condition is only truefor nurseries of Larix olgensis and Pinus sylvestries var.golica,while not true for nurseriesof P.koraiensis.From the results of four years' records and experiments,it is shown that high precipita-tion with high frequencies,or high soil water content during the susceptible stages of thegrowing period of coniferous seedlings,generally favors the development of damping-off in thenorth-east provinces.Although the soil temperature has certain effect on damping-off,but itis not critical for the disease development.In a certain locality,where the fluctuation of soil pH is inconspicuous during the growingseason,the correlation between the soil pH to the disease development is not significant.Besides the enviromental factors,the total percentage of disease incidence is also in-fluenced by the duration of the infecting period.

根据六年来的资料分析,在东北各地松苗立枯病发生的开始时期,一般多在5月中旬,北部则稍迟;流行盛期在5月下旬至6月上、中旬间,为期将近一个月;发病休止期约在7月初旬至8月中旬,差异比发病开始时期大。病害发生延续期约45—82天,平均发病期为61.4天。红松幼苗发病与流行盛期较晚,与樟子松和落叶松有所不同。三种立枯病菌病苗的出现时期受土壤温度的影响。丝核菌(Rhizoctonia)病苗发生最多在土温18—22℃,腐霉菌(Pythium)在17—22℃,镰刀菌(Fusarium)在23—28℃,所以一般早期发生的病苗主要为丝核菌侵染所致,其次为腐霉菌,在后期则多数为镰刀菌,但如早期土温较高时,亦有较多的镰刀菌病苗。总的发病土温范围是11—30℃,适温为18—25℃,红松幼苗的发病土壤适温还要高些。松苗立枯病在东北地区的流行主要受土壤含水量和降雨量的影响。松苗在生长感染期间,如遇雨量大和次数多或土壤含水量高时,则有利于发病,几天后在流行曲线上即可出现发病率的高峯。土壤温度不是病害流行的主要限制因素,因为在幼苗生长期间,土温范围都适宜于立枯病的发生。在同一地区的发病期间,苗床土壤 pH 值的变动并不显著,故在同一地区病...

根据六年来的资料分析,在东北各地松苗立枯病发生的开始时期,一般多在5月中旬,北部则稍迟;流行盛期在5月下旬至6月上、中旬间,为期将近一个月;发病休止期约在7月初旬至8月中旬,差异比发病开始时期大。病害发生延续期约45—82天,平均发病期为61.4天。红松幼苗发病与流行盛期较晚,与樟子松和落叶松有所不同。三种立枯病菌病苗的出现时期受土壤温度的影响。丝核菌(Rhizoctonia)病苗发生最多在土温18—22℃,腐霉菌(Pythium)在17—22℃,镰刀菌(Fusarium)在23—28℃,所以一般早期发生的病苗主要为丝核菌侵染所致,其次为腐霉菌,在后期则多数为镰刀菌,但如早期土温较高时,亦有较多的镰刀菌病苗。总的发病土温范围是11—30℃,适温为18—25℃,红松幼苗的发病土壤适温还要高些。松苗立枯病在东北地区的流行主要受土壤含水量和降雨量的影响。松苗在生长感染期间,如遇雨量大和次数多或土壤含水量高时,则有利于发病,几天后在流行曲线上即可出现发病率的高峯。土壤温度不是病害流行的主要限制因素,因为在幼苗生长期间,土温范围都适宜于立枯病的发生。在同一地区的发病期间,苗床土壤 pH 值的变动并不显著,故在同一地区病害流行与 pH 值关系亦不大。当年病害发生总百分率的高低,除受气候因素的影响外,还受病害发生延续期长短的影响。如发病延续期久,则总的发病率较高。

 
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