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rot root
相关语句
  烂根病
     Disinfection and Pathogen of Anthurium Rot Root
     红掌烂根病的病原鉴定
短句来源
  “rot root”译为未确定词的双语例句
     thesize of rot root is as long as 2—3m; the trunk heart rot spreads long but the area is small.
     ②山杨心腐的外部特征是有乳头状的鼓包,材身表面有菌,根部心腐一般延伸2—3m,树干心腐面积小,延伸长。
短句来源
     Phytophthora species infecting staple crops in Xinjiang were systematically studied from 1993 to 1995. 1531 diseased plant samples showing root rot,root crown rot and fruit rot from 28 kinds of plant in 9 regions were collected and isolated, 452 Phytophthora isolates were obtained.
     1993~1995 年,对侵染新疆主要农作物的疫霉菌进行了较全面的调查研究,共从 9 个地区的28 种作物上采集表现根腐、根颈腐、果腐症状(包括病土)的病样 1531 个,结果从其中 17 种作物上分离到452 个疫霉菌株。
短句来源
  相似匹配句对
     ON THE ROOT ROT OF SWEETPOTATO
     甘薯根腐病的初步研究
短句来源
     Root
     根
短句来源
     ,root rot(Fusarium sp.)
     、根腐病(Fusariumsp.)
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  rot root
After felling, the stems were tested for fungus attack, the types of rot (root rot or wound rot) were registered, the degree of the damage was determined and the responsible wood-destroying fungi were identified.
      
Soil solarization resulted in reduced root rot (root disease index 28.6%) in comparison to the untreated control (52.0%) 8 months after planting.
      


Since the discovery of the virus nature of Citrus yellow shoot,progress has been madein the following studies.It was found that the affected plant may develop first diagnostic symptoms on springshoots aside from those on summer and autumn shoots,the new leaves on the spring shootsturning greyish green and becoming stiffened after they have matured normally.Yellowingof the midribs of new leaves on late autumn shoots in winter time,after acquiring normalcoloration,is also an early diagnostic symptom of the disease.The...

Since the discovery of the virus nature of Citrus yellow shoot,progress has been madein the following studies.It was found that the affected plant may develop first diagnostic symptoms on springshoots aside from those on summer and autumn shoots,the new leaves on the spring shootsturning greyish green and becoming stiffened after they have matured normally.Yellowingof the midribs of new leaves on late autumn shoots in winter time,after acquiring normalcoloration,is also an early diagnostic symptom of the disease.The cleared juice of macerated leaves of diseased shoots generally turns orange-red uponthe addition of KOH or NaOH,but the result is inconsistentA species of Phoma-like fungus suspected by Tu et al(1959)to be the primary causalfactor of the present disease has been proved to be nonpathogenic.Preliminary transmission studies show that an unidentified Species of brown citrus aphidis a probable vector and that the possibility of seed transmission of the disease is not to beexcluded.The rotted roots left in the soil after the roguing of diseased trees apparentlycannot transmit the disease.The yellow shoot virus apparently moves within the plant upward and downward simultane-ously and in about the same speed.Thirteen varieties of Citrus and its relatives tested as rootstocks did not increase theresistance of Ponkan(Citrus.tankan)grafted onto such stocks.Trees of different ages show different degrees of susceptibility to the disease,nurserytrees and older trees being more resistant.The effect of environment on the incidence of the disease is not obvious and there is noevidence that the disease may be controlled through cultural practices.However,roguing ofdiseased trees and spraying with suitable insecticides to control possible insect vectors areeffective to a certain degree bY slowing down the spread of the disease.Preliminary studies show that heat treatment of budwoods taken from diseased trees byimmersing the propagating materials in hot water or by placing them in hot air saturatedwith water vapor in an electric oven at suitable temperatures for appropriate lengths of timeis effective in inactivating the virus.

柑桔黄梢(黄龙)病的研究几年来的进展不快,但仍取得了如下一些成果。柑桔树受侵染后,一般在夏、秋梢老熟期开始发病,但最近发现,亦可在春梢老熟后开始表现病状,其特征为新叶老熟后转为灰绿色。冬季发病的初期病状有时表现为老熟后的新叶中肋黄化。病树叶的澄清汁液与 KOH 或与 NaOH 混和,每有转变为橙缸色的反应,但不一致。曾经被认为可能是黄梢病原的真菌“Deuterophoma sp”已被证明与本病的发生无关。初步试验结果表示柑桔褐蚜可能是一种传染媒介。种子带病的可能性不能排除,有待进一步探讨。病树的根残留土中显然不起传病作用。黄梢病毒在病株体内似以相等的速度同时向上下运转。用13种柑桔类作为砧木,对蕉柑的抗病性皆不起显著的增强作用。不同树龄的植株表现显然不同的抗病性。苗木和老年树比较抗病,幼年树则容易发病。环境因素对植株的发病不起决定性的影响,因而采取栽培措施不能抑制发病,更不能收到治疗效果。挖除病株和喷药除虫则可在一定程度上起抑制蔓延的作用。初步试验表示,用热水或湿热空气处理病树芽条可以消除带病。

The couses of The Rotting Roots of Symphytnm Officinale L. were studied and experimented for 4 years.According to the preliminary results, we believe that the reason of rotting the roots is due to the inappropriate cultivation and management, but not the pathogenetic microorganisms.So we suggest that the methods of high ridge culture and furrow irrigation can be used. Thus they may reduce the rotten roots nate and increase the yields of Symphytum Officinale L.

经四年的观察,调查,试验,初步认为,我校聚合草烂根原因,由病原微生物引起的可能性不大,而是由于栽培管理不当造成的,为此,建议采用“高垅沟灌栽培法,可以减轻烂根,提高产量。

From 718 samples of infested seedling, leaves ears and seeds of root ort of wheat have been collected from 4 B Counties of n,ajor wheat production region of Heilongjang province of china during 1980?983. The results of isolating, identifying and pathoge-nicity test ind cated that rot root of wheat caused by pathogenic fungi Bipolbris sorokinianai B. trittcicola; Exserohilum monoceras; curvularia iunata; C. oryzae and a few Alternaria spp.j Fusarium spp. one of them, B.sorokiniana is main pathygenic fungi...

From 718 samples of infested seedling, leaves ears and seeds of root ort of wheat have been collected from 4 B Counties of n,ajor wheat production region of Heilongjang province of china during 1980?983. The results of isolating, identifying and pathoge-nicity test ind cated that rot root of wheat caused by pathogenic fungi Bipolbris sorokinianai B. trittcicola; Exserohilum monoceras; curvularia iunata; C. oryzae and a few Alternaria spp.j Fusarium spp. one of them, B.sorokiniana is main pathygenic fungi and it was strong pathogenicity to whaet, B. triticicola is a new type. The paper described morphology character,pathogenicity and host range of above all pathogenic fungi0

1980~1983年从我省主要产麦区的48个县采集了小麦根腐病菌标样718个。经分离鉴定结果表明,引起我省小麦根腐病原菌有:Dipolaris Sorokiniana;B.triticicola; Exserohilum monoceras;Curvulaia;lunata;C.oryzae,尚有Alternaria SPP.Fusarium SPP.其中B.Sorokiniana是主要病原菌,且致病力强。B.triticicola是引致小麦根腐病的一个新种。

 
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