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nematode parasitic
相关语句
  线虫寄生
     By synchronous studies on natural growth and decline laws of nematode parasitic stage larva and adult,the results showed that winter larva parasitic high tide was the origin of coming spring adult parasitic high tide;
     对线虫寄生阶段幼虫和成虫自然消长规律同步研究结果证明,冬季的幼虫寄生高潮是形成春季成虫高潮的主要来源;
短句来源
  “nematode parasitic”译为未确定词的双语例句
     A series of studies on Amphimermis sp.a nematode parasitic,on the brown planthopper(BPH),were carried out during 1978—1982.It was concluded that nematodes was a major natural enemy in regulating the population of the host insect.
     1978~1982年,作者对两索线虫(Amphimermis sp.)
短句来源
  相似匹配句对
     Biodiversity of the parasitic fungi in root-knot nematode
     根结线虫的寄生菌物生物多样性
短句来源
     Plant-parasitic Nematode Suppression by Insectivorous Nematodes
     昆虫线虫对植物线虫的抑制作用
短句来源
     Parasitic site of C.
     发现鹌鹑源C.
短句来源
     ②nematode;
     ②病原线虫 ;
短句来源
     The parasitic site of C.
     C.
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  nematode parasitic
New reports and a redescription of Porrocaecum heteropterum (Diesing, 1851) (Ascarididae), a rare nematode parasitic in South Am
      
Fungal and nematode parasitic systems are compared throughout the review.
      
There are several approaches to identifying genes potentially involved in nematode parasitic abilities.
      


A series of studies on Amphimermis sp.a nematode parasitic,on the brown planthopper(BPH),were carried out during 1978—1982.It was concluded that nematodes was a major natural enemy in regulating the population of the host insect. This nematode has a wide distribution and occurs almost simultane- ously with the insect pest,causing the life span of the insect infected by Amphimermis sp.declined andthe reproductive capacity of the insect almost lost.Under natural condition,a corresponding lineal regression...

A series of studies on Amphimermis sp.a nematode parasitic,on the brown planthopper(BPH),were carried out during 1978—1982.It was concluded that nematodes was a major natural enemy in regulating the population of the host insect. This nematode has a wide distribution and occurs almost simultane- ously with the insect pest,causing the life span of the insect infected by Amphimermis sp.declined andthe reproductive capacity of the insect almost lost.Under natural condition,a corresponding lineal regression equation and correlation between the effect of control and the parasiticed percentage of BPH(x)was shown as2.1845+0.9691x,r=0.9751 (P<0.01).It was considered that Amphimermis sp.plays an important role in influencing the population density of BPH.It was also shown that there was a close correlation between the reproductive coefficient of BPH(y)and the average minimum temperature in earlier autumn(x_1), as well as the infected percent'age of the female(x_2).The multiple cor- relation coefficent(R)was 0.9146(P<0.001),and the regression equa- tion was24.9376+0.1820x_1-0.2823x±2.3892.According to the mo- del,the potential of BPH populations of main generations can be predi- cted earlier.

1978~1982年,作者对两索线虫(Amphimermis sp.)进行了研究,认为是调节当地褐稻虱种群数量的优势天敌。这类线虫分布区域较广,与害虫同一季节发生。感染线虫的褐稻虱寿命缩短,为害力减低,丧失繁衍后代的机能,在自然情况下的控制作用与寄生率(x)基本呈对应的线性关系,y=2.1845+0.9691x,r=0.9751(P<0.01)。因此,两索线虫是影响褐稻虱繁殖的重要因子。研究表明,早秋平均最低气温(x_1)和褐稻虱雌虫的线虫感染率(x_2)与褐稻虱繁殖系数(y)问的关系十分密切,复相关系数 R=0.9146,(P<0.001),y=24.9376+0.1820x_1-0.2823x_2±2.3892。根据此预测模式,可用以中期预测单季稻田穗期褐稻虱地方种群的发生量和发生程度,提高了准确率。

In eastern Qinghai-Tibet Plateau,by investigating parasitic harmfulness to yak feeding industry in grassland,pathogenic classification,epidemiology and control,we have known that certain parasitoses were the important cause of leading to spring weak/death of young yaks. Of 85 known parasites in the Qinghai yak,there were 17-22 dominant species. By synchronous studies on natural growth and decline laws of nematode parasitic stage larva and adult,the results showed that winter larva parasitic high...

In eastern Qinghai-Tibet Plateau,by investigating parasitic harmfulness to yak feeding industry in grassland,pathogenic classification,epidemiology and control,we have known that certain parasitoses were the important cause of leading to spring weak/death of young yaks. Of 85 known parasites in the Qinghai yak,there were 17-22 dominant species. By synchronous studies on natural growth and decline laws of nematode parasitic stage larva and adult,the results showed that winter larva parasitic high tide was the origin of coming spring adult parasitic high tide;spring adult parasitic high tide is closely related to yak spring weak/death; driving out nematode larva of predominant developmentblocked type and helminth timely in winter can effectively prevent high tide appearance of adult worm in spring. Orally giving young yak albendazole(10-20mg/kg) in January or February, tested through over 100000 yaks, can lower spring weak/death rate 71.6%-93.3%,the average increased or less-reduced weight per yak was 2.3-5.05kg. These results coincide with our studies on sheep nematodes. Therefore we have expounded the important theory,i. e. why spring high tide of parasism would present. The winter control method based on our studies is handy and easily put into effect,and has remarkable economic and social benefits.

在青藏高原东部地区,通过调查寄生虫病对草原牦牛饲养业的危害,病原分类,流行规律及防治对策等一系列研究,探明寄生虫病是引起幼年牦牛春乏死亡的重要原因;在已查明青海牦牛的85种寄生虫中,优势虫种有17~22种。对线虫寄生阶段幼虫和成虫自然消长规律同步研究结果证明,冬季的幼虫寄生高潮是形成春季成虫高潮的主要来源;春季成虫高潮与牦牛春乏死亡密切相关;冬季适时驱杀占优势的线虫受阻型幼虫和其它蠕虫,能够有效地预防春季成虫高潮的出现;1~2月应用丙硫咪唑按10~20mg/kg体重剂量,对幼年牦牛进行一次口服投药驱虫,经对10万余头牛示范推广应用观察,可使春乏死亡率下降幅度达71.6%~93.3%,每头牛平均多增或少减活重2.3~5.05kg。本项研究与笔者等对羊线虫的研究结果吻合,从而阐明了寄生虫病春季高潮来由这一重大理论问题。在此基础上研究成功的冬季驱虫防治措施,方法简便易行,经济效益、社会效益显著。坚持推广该项技术,将为草原畜牧业生产带来可观的效益。

 
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