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非根际土壤     
相关语句
  non-rhizosphere soil
     The results showed that: in the symbiotic period of wheat and cotton, compared with WCRP, the activity of urease, invertase and protease at cotton rhizosphere and non-rhizosphere soil increased in WCRM and WCRN, and the soil enzyme activity in WCRN was the highest one.
     结果表明,在麦棉共生期,与麦棉塑膜隔根相比,麦棉自然根系和纱网隔根复合群体中棉花根际非根际土壤脲酶、蔗糖酶和蛋白酶的活性均有所提高,其中以麦棉纱网隔根处理的土壤酶活性最高。
短句来源
     After 45 days of metolachlor treatment,the numbers of bacteria and fungi in rhizosphere soil were higher than those in non-rhizosphere soil,and the R/S was 1.76~2.51.The numbers of actinomycetes were relatively stable,and the rhizosphere effect was not significant.
     异丙甲草胺作用45d后,芹菜根际土壤细菌、真菌数量大于非根际土壤,根际效应R/S在1.76~2.51之间; 异丙甲草胺对土壤放线菌数量影响不大,根际效应不明显.
短句来源
     In the rhizosphere soil, the numbers of bacteria, actinomyces and fungi were 12, 3.1 and 9 times of those in the non-rhizosphere soil, and the differences were all significant (P < 0.01). The enzyme activities of dehydrogenase, protease, phosphatase and urease were also higher in the rhizosphere than in the non-rhizosphere for 37.1% , 36.5% , 70.6% and 35.7% , respectively.
     土壤微生物的差异更为明显,细菌、放线菌和真菌分别高12倍、3.1倍和9倍,同时,根际土壤中的酶活性也比非根际土壤强,其中土壤脱氢酶、蛋白酶、磷酸酶、脲酶活性分别高37.1%、36.5%、70.6%、35.7%。
短句来源
     (2)In different stages of C. equisetifolia plantation development,the CEC,hydrolytic acidity and exchange Mg~(2+) in rhizosphere soil were more than those in non-rhizosphere soil,except for exchange Ca~(2+) in young C.
     (2)不同年龄木麻黄林地根际CEC值、水解性总酸度、交换性盐基总量、交换性M g2+均大于非根际土壤; 幼林龄根际交换性C a2+低于非根际;
短句来源
     Results showed that phosphorus adsorption amounts in rhizosphere soil were lower than those in non-rhizosphere soil within phosphate contents tested, and when phosphate content tested was 30 mg/L, the difference of phosphorus adsorption amount was the greatest between rhizosphere and non-rhizosphere soils and reaches - 15.57 mg/kg.
     结果表明,I-69杨根系活动能抑制根际土壤对磷的吸附,抑制能力与培养溶液起始磷浓度相关,当培养溶液起始磷浓度为30 mg/L时,抑制能力最大,根际、非根际土壤磷吸附量之差为-15.57 mg/kg;
短句来源
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  bulk soil
     Sorption-Desorption Behavior of Cd~(2+) and Pb~(2+) in Rhizosphere and Bulk Soil
     Cd~(2+)、Pb~(2+)在根际和非根际土壤中的吸附-解吸行为
短句来源
     Sorption-desorption behavior of Cd~(2+) and Pb~(2+) in the rhizosphere and bulk soil of wheat was studied by the batch method.
     采用1次平衡法对Cd2+、Pb2+在小麦根际和非根际土壤中的吸附-解吸行为进行比较研究.
短句来源
     The content of Olsen-P, Ca2-P: Ca8-P, A-P was lower in the 0-2 mm, 2-4 mm rhizosphere soil than bulk soil.
     两种作物接种VA菌根后均显著增加了根际Olsen-P、Ca2-P、Ca8-P、AI-P等形态无机磷的消耗量,而且,根际、非根际土壤各形态磷的浓度梯度显著减小。
短句来源
     Compared to bulk soil, rhizosphere soil showed lower pH, exchangeable Ca, Mg and base saturation but a higher exchangeable K.
     与非根际土壤相比,根际土壤pH、交换性Ca、Mg和盐基饱和度明显降低,而交换性K高于非根际土壤
短句来源
     The results showed that the soil fertility of the first cultural soil was higher than that of the second,the soil fertility of root zone was greater than that of bulk soil,and the difference of soil fertility in different site types was significant.
     结果表明,土壤的肥力一耕土比二耕土高,根际土壤显著地高于非根际土壤,不同立地条件类型土壤肥力存在显著差异。
短句来源
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  non rhizosphere soil
     The results show that the contents of organic and inorganic nutrients in the rhizosphere soil of young,half mature and near mature Chinese fir of first rotation are more than those in non rhizosphere soil,except for total K in young Chinese fir plantation.
     研究结果表明:杉木幼龄林、中龄林及近熟林样地土壤中有机养分和无机养分含量,除去幼龄林土壤中全K 之外,均是根际土壤养分含量高于非根际土壤
短句来源
     The contents of Cu,Zn,Mn,decrease greatly from young stage to half mature stage,and rehabilitate a little from half mature stage to near mature stage in non rhizosphere soil.
     Cu、Zn 、Mn 含量,从幼龄林至中龄林呈大幅度下降,中龄林至近熟林在非根际土壤中略有恢复。
短句来源
     The results showed that application of organic manure considerably increased the numbers of fungi, actinomyces and bacteria, and avaiable P concentration both in rhizosphere and in non rhizosphere soil of rice.
     试验结果表明,有机肥明显地提高水稻根际和非根际土壤真菌、放线菌和细菌的数量及土壤有效磷的含量。
短句来源
     The amount variation of the three types of microorganism and its main microbial physiological groups in rhizosphere soil and non rhizosphere soil in DF communities indicates the dynamic process of soil degradation.
     DF群落根际和非根际土壤中 3大类微生物及生理类群数量分布发生的变化 ,指示了土壤性质恶化的动态变化 .
短句来源
     Results indicated that rhizosphere soil is markedly more favorable to bacteria and for enzyme activity than non rhizosphere soil.
     研究结果表明 :根际土壤中的细菌数量明显大于非根际土壤 ,根际土壤酶的活性高于非根际土壤 ;
短句来源
  non-rhizosphere soils
     Compared with non-rhizosphere soils, the contents of organic combined and exchangeable in rhizosphere soils of H. ramosissimum had increased, among them, the organic combined of Cu increased 53.25%, Pb and Cd increased more than 17%, and Zn 5.67% in average.
     与非根际土壤相比较,根际土壤中交换态、有机态重金属所占比例显著增加,其中Cu的有机结合态所占比例增加了53.25%、Cd、Pb的有机结合态所占比例增加超过17%,Zn则增加了5.67%;
短句来源
     It was investigated that characteristics of phosphorus adsorption in rhizosphere and non-rhizosphere soils of poplar.
     对滨海脱盐土壤上11年生1-69杨根际、非根际土壤磷吸附特性进行了研究。
短句来源
     The results were as follows: (1)For the non-rhizosphere soils the pH values and the contents of the available N、Mn、Cu showed the pure plantation of Juglans mandshurica>the mixed plantation>the pure plantation of Larix gmelinii,and the contents of the available P、K、Fe、Zn showed the pure plantation of Larix gmelinii>the mixed plantation>the pure plantation of Juglans mandshurica;
     结果表明:(1)非根际土壤pH及有效N、Mn、Cu含量表现为:胡桃楸纯林>混交林>落叶松纯林,而有效P、K、Fe、Zn含量则表现为:落叶松纯林>混交林>胡桃楸纯林;
短句来源
     Results showed that phosphorus adsorption amounts in rhizosphere soil were lower than those in non-rhizosphere soil within phosphate contents tested, and when phosphate content tested was 30 mg/L, the difference of phosphorus adsorption amount was the greatest between rhizosphere and non-rhizosphere soils and reaches - 15.57 mg/kg.
     结果表明,I-69杨根系活动能抑制根际土壤对磷的吸附,抑制能力与培养溶液起始磷浓度相关,当培养溶液起始磷浓度为30 mg/L时,抑制能力最大,根际、非根际土壤磷吸附量之差为-15.57 mg/kg;
短句来源
     Phosphorus adsorption parameters of rhizosphere soil in three equations -Xm,k, k1 and k2 were clearly smaller than those of non-rhizosphere soils. Simple correlation analyses showed that Xm,k,k1, and k2 were negatively correlated with contents of available-P at a very significant level of 0.01.
     根际土壤磷吸附容量参数Xm,k, k1,k2的值明显低于非根际土壤,相关分析表明,它们与土壤有效磷含量呈显著负相关。
短句来源
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  non-rhizosphere soil
It is shown that from non-rhizosphere soil to rhizosphere soil to root surface to root region the numbers of azotobacter increase sharply, and the rhizosphere effects of azotobacter are very obvious.
      
Counts of various groups of bacteria indicated an enrichment of anaerobic (glucose-utilizing) and microaerophilic (malateutilizing) N2-fixing bacteria in the rhizosphere in comparison to non-rhizosphere soil.
      
Root quantity was manipulated by varying plant density (0, 1, 2, or 4 seedlings) and rhizosphere soil was separated from non-rhizosphere soil by a 1.2 μm mesh fabric.
      
Faunal activity was concentrated in the rhizosphere compared to non-rhizosphere soil.
      
Halophyte roots were not mycorrhizal but more spores were found in rhizosphere than in non-rhizosphere soil.
      
更多          
  bulk soil
The carbon of the microbial biomass composed 56 and 39% of the total amounts of 13C photoassimilates in the rhizosphere and in the bulk soil, respectively.
      
The soil organic matter served as the major carbon-containing substrate for microorganisms in the bulk soil and in the rhizosphere: 81-91% of the total amount of carbon involved in the microbial metabolism was derived from the soil organic matter.
      
As far as the total P and K contents are considered, there exists a deficient tendency in rhizosphere in comparison with bulk soil.
      
The results showed that the soil pH and available P near the roots were all lower than in the bulk soil in control treatment.
      
On the contrary, the rhizosphere soil pH was higher than in the bulk soil in treatments with NO3--N and retarded the P absorption, which led to a nearly equal available P contents to the bulk soil.
      
更多          
  non rhizosphere soil
The isotopic exchange properties of rhizosphere soil where compared with control non rhizosphere soil.
      
  non-rhizosphere soils
Azospirillum and Azotobacter between rhizosphere and non-rhizosphere soils of C.
      
Likewise, in anaerobically (H2 + CO2 atmosphere) incubated mineral salts solution inoculated with suspensions from rice rhizosphere and non-rhizosphere soils, γ-HCH decreased to low levels (>amp;lt; 15%) within 5 days.
      
Conversely, in rhizosphere and non-rhizosphere soils, the community composition of streptomycetes was affected strongly even by modest compost amendment.
      
Soil samples from four sites were collected from the rhizosphere and non-rhizosphere soils.
      
Principal component analysis (PCA) of the multivariate data set differentiated the soil samples on the relatively gross scale of microbial communities isolated from rhizosphere and non-rhizosphere soils at all three temperatures.
      
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  其他


Some chemical properties of soil between the root zone of Chinese fir and bulk soil were analysed, and effects of Chinese fir succession on the properties and tree growth were studied. There existed a signifcant difference in content of organic matter, total N, soluble P and K between the rhizosphere and bulk soil. The content of organic matter, total N and soluble P in the rhizosphere soil were higher than those in the bulk soil, and soluble K content of the former was lower than that of the latter. The C/N...

Some chemical properties of soil between the root zone of Chinese fir and bulk soil were analysed, and effects of Chinese fir succession on the properties and tree growth were studied. There existed a signifcant difference in content of organic matter, total N, soluble P and K between the rhizosphere and bulk soil. The content of organic matter, total N and soluble P in the rhizosphere soil were higher than those in the bulk soil, and soluble K content of the former was lower than that of the latter. The C/N of the rhizosphere soil was higher than that of the bulk soil, implying lower N content in organic matter of the former. The pH of the rhizosphere soil tended to be lower than that of the bulk soil. The successive planting of Chinese fir caused decreasing of the organic matter, N, P, K and pH in the rhizosphere and bulk soil to a certain degree, and worsening of the rhizosphere surrounding. This was one of the factors which reduced the growth rate of Chinese fir.

本文比较分析了杉木根际土壤和非根际土壤的一些化学性质,并探讨了杉木连栽对这些性质和林木生长的影响。结果表明,杉木根际土壤的有机质、全氮、速效磷含量显著地高于非根际土壤,速效钾含量则相反。根际土壤的C/N较高,而pH则有降低的趋势。杉木连栽在不同程度上会降低根际和非根际土壤有机质、N,P,K含量和土壤pH,导致土壤养分状况和根际环境的恶化,从而使连栽杉木生长受阻。

The number of microbes and enzyme activities in the rhizosphere and bulk soil of Chinese fir were analysed. The microbes in the rhi zosphere and bulk soil of Chinese fir were mainly bacteria. A larger portion of bacteria was ammonifying bacterium. The number of bacteria, actinomyces and fungi in the rhizosphere was higher than that in the bulk soil respectively. The enzyme activities of urease, sucrase, phosphatase, dehydrogenase and cellulase were the same trend with the microbe, and the activity of polyphenol...

The number of microbes and enzyme activities in the rhizosphere and bulk soil of Chinese fir were analysed. The microbes in the rhi zosphere and bulk soil of Chinese fir were mainly bacteria. A larger portion of bacteria was ammonifying bacterium. The number of bacteria, actinomyces and fungi in the rhizosphere was higher than that in the bulk soil respectively. The enzyme activities of urease, sucrase, phosphatase, dehydrogenase and cellulase were the same trend with the microbe, and the activity of polyphenol oxidase in the rhizosphere was lower than that in the bulk soil. The number of microbes and enzyme activities were related to the chemical properties in the rhizosphere of Chinese fir. Chinese fir repeated planting markedly decreased microbial number and activities of dehydrogenase and cellulase, and increased the activity of polyphenol oxidase in the rhizosphere, revealing decrease of the biochemical activity. This would cause nutrient defficiency and accumulation of toxic substance, resulting in lower growth rate of repeated Chinese fir.

本研究测定了浙江省一些林场内杉木林地杉木根际和非根际土壤的微生物数量和酶活性。结果指出,杉木根际和非根际土壤中的微生物以细菌为主,其中氨化细菌占有较大数量。杉木根际土壤的细菌、放线菌和真菌数量都显著地高于非根际土壤。脲酶、蔗糖酶、磷酸酶脱氢酶和纤维素酶活性也有同样趋势,但多酚氧化酶则相反。根际微生物数量和酶活性与土壤化学性质有关。杉木连栽显著地降低根际微生物数量和脱氢酶、纤维酶活性,但增大了多酚氧化酶活性。这表明降低了生物化学活性。而这又会引起根际养分不足和有毒物质积累,导致连栽杉木较低的生长速率。

According to the observation and analysis on sample stands of Chinese-fir of8-26 years o1d, the activity of enzymes (sucrase, urease, polyphenoloxidase, cellulase andperoxidase) in rhizosphere soil is stronger than those in non-rhizosphere soil, and there areoutstanding differences between them. But the differences tend to reduce gradually as the treesgrow old. The R/S value of soil in stand with lower annual growth capacity is slightly smallerthan stand with higher one. At young stage of growth (8-11 years...

According to the observation and analysis on sample stands of Chinese-fir of8-26 years o1d, the activity of enzymes (sucrase, urease, polyphenoloxidase, cellulase andperoxidase) in rhizosphere soil is stronger than those in non-rhizosphere soil, and there areoutstanding differences between them. But the differences tend to reduce gradually as the treesgrow old. The R/S value of soil in stand with lower annual growth capacity is slightly smallerthan stand with higher one. At young stage of growth (8-11 years old), the activities ofenzymes in rhizosphere and non-rhizosphere soil in stand with lower growth capacity are higherthan those with higher growth capacity in the main. But this phenomenon turns to the oppositewhen tree growes old. The total amount of microorganisms (germ, fungus and actinomyces)in soil in stand with lower growth capacity is greater than that with higher growth capacityat young growth stage. But also the phenomenon turns to the opposite when tree growes old,which is quite consistent with the level of enzyme activity in soil.

对8~26年生杉木人工林样地的调查分析表明,其酶活性(蔗糖酶、脲酶、多酚氧化酶、纤维素酶及过氧化酶)是根际土壤强于非根际土壤,且两者差异显著;但随着树龄增加,其差异有逐渐缩小的趋势。年生长量小的R/S值要略小于年生长量大的。幼年时期(8~11年)杉木林根际与非根际酶活性基本上是生长量小的高于生长量大的,但随树龄增加则相反。微生物总量(细菌、真菌、放线菌)在幼年时生长量小的多于生长量大的,这同酶活性高低颇为一致,而树龄增加则反之。

 
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