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   soil fusarium 的翻译结果: 查询用时:0.007秒
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农业基础科学
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soil fusarium
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  相似匹配句对
     SAPROPHYTIC COLONIZATION AND SURVIVAL OF FUSARIUM OXYSPORUM IN SOIL
     尖孢镰刀菌在土壤中的竞争腐生定殖与腐生存活
短句来源
     Isolation of Soil Antagonistic Microoganism to Control Growth of Fusarium
     抑制镰刀菌生长的土壤拮抗菌的筛选
短句来源
     M,soil nutrition.
     二等{NP,NPZnK,M};
短句来源
     MANGROVE AND IT'S SOIL
     红树林及其土壤
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     j Fusarium spp.
     Fusarium SPP.
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Vermicomposting is a biological degradation of organic wastes by earthworms. Some earthworms can consume a wide range of organic residues such as sewage sludge, animal wastes and crop residues. The end product is known as earthworm cast or vermicompost. Recently, the use of vermicompost as an organic fertilizer for the cultivation of plants has been examined. The aim of this study was to investigate the suppressive effect of vermicompost produced from cattle manure by Eisenia fetida against some soil-borne...

Vermicomposting is a biological degradation of organic wastes by earthworms. Some earthworms can consume a wide range of organic residues such as sewage sludge, animal wastes and crop residues. The end product is known as earthworm cast or vermicompost. Recently, the use of vermicompost as an organic fertilizer for the cultivation of plants has been examined. The aim of this study was to investigate the suppressive effect of vermicompost produced from cattle manure by Eisenia fetida against some soil-borne vegetable plants seedling diseases. So the application of vermicompost can be enlarged,and the most important is that it will decrease the use of chemical pesticide in agricultural production.The methods used in this study contained culture plate analysis and pot bioassay to test the suppressive effect of vermicompost,the pot experiments had 6 treatments: CK (autoclaved soil), 10%V (10% Vermicompost+autoclaved soil), 20%V, 30%V, 50%V, 20% autoclaved Vermicompost. Every treatment repeated for 3 times, the cucumber was infected by Rhizoctonia solani or Fusarium oxysporum. And to isolate microbial communities using diluted flat plate techniques. Microbial activity was monitored by measuring the rate of hydrolysis of fluorescein diacetate (FDA). FDA is hydrolyzed by a number of enzymes in living cells, such as proteases, lipases and esterases. The reaction yields water-soluble fluorescein from water insoluble FDA.\;The results showed that when adding vermicompost to the center of PDA medium coated with Fusarium oxysporum conidia suspension, A large inhibition zone surrounded it after 15~20days cultivation, the vermicompost induced a strong inhibition of growth of Fusarium oxysporum on agar plates. Whereas the medium without vermicompost and with sterilized vermicompost were all covered with white mycelium. At the same time, a cucumber seedling bioassay was developed, It indicated that the disease incidence was lower when amended with vermicompost. The decrease of disease incidence was connected to the amount of vermicompost in the potting media. When the substrate consisted of 20% of vermicompost, best suppression occurred, the biological control effect was about 96.1%( P <0.05). In addition, the mean fresh weights and plant height of the plants had similar trends. All these suggested that addition of vermicompost with different doses had definite relationship with the suppression of some soil-borne vegetable plants diseases. \;This study also investigated the suppression mechanisms. Because of no suppressive effect was observed in the PDA medium added with sterilized vermicompost and when sterilized vermicompost addition to autoclaved soil with pathogen,no obvious suppression occurred in pot experiments, it seemes that vermicompost lost its suppressive activity after heating sterilized. In another experiment, when 10%~20% vermicompost added into the diseased soil ( Fusarium wilt of cucumber), the total number of plant pathogen ( Fusarium oxysporum ) were significantly lower than the control diseased soil and the total numbers of microorganisms (fungi, actinomycetes and bacterium) were also significantly higher especially the amount of actinomycetes was about 100 fold higher than the control soil. Similarly, with the addition of vermicompost, the microbial activity was also higher than non-vermicompost diseased soil. So the decrease of plant pathogens and the higher microbial activity and numbers of microorganisms in the vermicompost-diseased soil mixture account for improving the competition for resources including space and nutrition of all the soil microorganisms with the plant pathogens. Furthermore, two antagonistic actinomycetes strains have been isolated from the suppressive vermicompost. The vermicompost was obtained by putting earthworm into autoclaved culture plate for six hours after surface-sterilized the worm in 50%~60% ethanol and then dipped into autoclaved water for 5 minutes. The two strains are Streptomyces syringini and Streptomyces globisporus. The two strains exhibit strong inhibition to many plant soi

试验表明 ,蚯蚓对农业有机废弃物进行生物降解的产物——蚯蚓粪 ,在一定程度上能够控制蔬菜类植物黄瓜苗期土传病害的发生 ,并表现出明显的促生长效应。蚯蚓粪控制病害的程度与蚯蚓粪的量有一定的关系 ,当蚯蚓粪与土体积比为 2 0 %时 ,控制病害的程度最大 ,防效达 96 .1 %。这种作用主要与蚯蚓粪中的微生物性质有关 ,蚯蚓粪能大大提高土壤中的微生物量和微生物活性 ,从而大大增强了病土中与病原菌进行能源竞争的微生物的竞争能力。同时从新鲜蚯蚓粪中成功分离到拮抗活性强、抗菌谱广的拮抗微生物。初步研究结果说明 ,一般性抑制和特殊性抑制两种机制在蚯蚓粪对病害的控制中起作用。

The current situation of domestic and international Fusarium classification is discussed in this paper.By single spore isolation from 164 soil samples collected from Xinzhou,we gain 16 Fusarium strains having big spores.We identified 16 Fusarium strains based on cultural and morphological characters,they are: F.oxysporum、F.solani、F.nivale、F.stoveri、F.subglutinans、F.camptoceras、 and F.lateritium.The analysing and evaluation of soil Fusarium are very important to preventing Fusarium...

The current situation of domestic and international Fusarium classification is discussed in this paper.By single spore isolation from 164 soil samples collected from Xinzhou,we gain 16 Fusarium strains having big spores.We identified 16 Fusarium strains based on cultural and morphological characters,they are: F.oxysporum、F.solani、F.nivale、F.stoveri、F.subglutinans、F.camptoceras、 and F.lateritium.The analysing and evaluation of soil Fusarium are very important to preventing Fusarium diseases,because the soil is the source of Fusarium.

在分析国内外镰刀菌属(FusariumLink)种类鉴定现状的基础上,将采自山西省忻州地区的164个土壤样品进行土壤分离培养及单孢分离纯化,得到16个有大孢子的镰刀菌菌株。运用培养性状和形态特征综合分析的方法对这16个菌株进行分类鉴定,鉴定结果为:16个菌株分别属于尖孢镰刀菌(F.oxysporum)、茄病镰刀菌(F.solani)、雪腐镰刀菌(F.nivale)、蕉斑镰刀菌(F.stoveri)、胶孢镰刀菌(F.subglutinans)、弯角镰刀菌(F.camptoceras)、砖红镰刀菌(F.lateritium)。由于土壤是镰刀菌的大本营,因此分析土壤中镰刀菌的类型对镰刀菌病害的防治具有重要意义。

 
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