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土壤速效p
相关语句
  soil available p
    While soil available P had a significant positive correlation with hyphae and vesicle percent colonization,and positive effect on total percent colonization.
    土壤速效P与菌丝和泡囊定殖率呈极显著正相关,与总定殖率呈显著正相关;
短句来源
  soil rapidly available p
    The results showed that red soil microbial biomass P was closely related with soil total P, soil organic P and soil rapidly available P. Relative coefficients were 0.840, 0.897 and 0.944, respectively.
    结果表明,红壤微生物量P与土壤全P、土壤有机P以及土壤速效P之间存在明显正相关,相关系数分别为0.840, 0.897和0.944。
短句来源
    Especially, the significant relation of red soil microbial biomass P to soil rapidly available P suggested that red soil microbial biomass P may act as an indicator of P-supply ability.
    红壤微生物量P尤以与土壤速效P关系最为密切,红壤微生物量P有可能作为红壤供P能力的一个活指标;
短句来源
  soil rapidly available p
    The results showed that red soil microbial biomass P was closely related with soil total P, soil organic P and soil rapidly available P. Relative coefficients were 0.840, 0.897 and 0.944, respectively.
    结果表明,红壤微生物量P与土壤全P、土壤有机P以及土壤速效P之间存在明显正相关,相关系数分别为0.840, 0.897和0.944。
短句来源
    Especially, the significant relation of red soil microbial biomass P to soil rapidly available P suggested that red soil microbial biomass P may act as an indicator of P-supply ability.
    红壤微生物量P尤以与土壤速效P关系最为密切,红壤微生物量P有可能作为红壤供P能力的一个活指标;
短句来源
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  soil available p
Surface soil available P under tree canopies was 34-50% higher than the corresponding soil away from canopies.
      
Phosphorus-based manure or compost application resulted in similar grain yields to those for N-based treatments but had significantly less soil available P level after 4 yr of application.
      
Although differences were not statistically significant, soil available P concentration tended to increase at early stages of liming for both plantations.
      
However, at the same levels of soil available P and K, field-grown tithonia consistently produced lower leaf P and K concentrations than that grown in hedges.
      
We quantified inputs from the atmosphere, dissolved and particulate-bound losses, throughfall and litterfall fluxes, standing crop litter and soil available P pools.
      
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red soils differing in fertility levels were tested to study the relationships between soil microbial biomass P and soil P or P plant-availability. The results showed that red soil microbial biomass P was closely related with soil total P, soil organic P and soil rapidly available P. Relative coefficients were 0.840, 0.897 and 0.944, respectively. Especially, the significant relation of red soil microbial biomass P to soil rapidly available P suggested that red soil microbial biomass P may act as an indicator...

red soils differing in fertility levels were tested to study the relationships between soil microbial biomass P and soil P or P plant-availability. The results showed that red soil microbial biomass P was closely related with soil total P, soil organic P and soil rapidly available P. Relative coefficients were 0.840, 0.897 and 0.944, respectively. Especially, the significant relation of red soil microbial biomass P to soil rapidly available P suggested that red soil microbial biomass P may act as an indicator of P-supply ability. Greenhouse incubation expriments showed that red soil microbial biomass P was also closely related with ryegrass dry matter yield, ryegrass P uptake and P uptake per unit weight of ryegrass. Relative coefficients were 0.789, 0.895 and 0.910, respectively, which indicated that P plant-availability of red soil microbial biomass P was not only reflected on ryegrass dry matter and plant P uptake,but also more obviously reflected on P uptake per unit weight of plant.

对有机质水平差异较大的7种菜茶果园红壤和1种红壤性水稻土进行了微生物量P与土壤P以及P植物有效性之间的相关性研究。结果表明,红壤微生物量P与土壤全P、土壤有机P以及土壤速效P之间存在明显正相关,相关系数分别为0.840, 0.897和0.944。红壤微生物量P尤以与土壤速效P关系最为密切,红壤微生物量P有可能作为红壤供P能力的一个活指标;盆栽试验表明,微生物量C与黑麦草产量呈显著正相关,与黑麦草吸P量以及单位黑麦草吸P量相关性不明显;而微生物量P与黑麦草产量、黑麦草吸P量以及单位黑麦草吸P量之间均呈显著正相关,相关性依次增强;红壤微生物量P在指示土壤植物有效P上的作用不仅体现在植物的产量和植物吸P量上, 更体现在植物的品质~单位重量植物的吸P量上。

This study assesses and compares the response of AM fungi to different plant and its abiotic environment by analysing soil samples collected in a field study in Wugong,Shaanxi province.Soil sample in the rhizosphere of Raspberry-Tulameen,Willamette and blackberry-Boysen,Blackbuttee were collected in 4 replicates and divided a depth of 40cm to 4 sections,i.e.0~10、10~20、20~30 and 30~40 cm in the rhizosphere of each plant.The result showed that different plant species significantly affected AM fungal colonization...

This study assesses and compares the response of AM fungi to different plant and its abiotic environment by analysing soil samples collected in a field study in Wugong,Shaanxi province.Soil sample in the rhizosphere of Raspberry-Tulameen,Willamette and blackberry-Boysen,Blackbuttee were collected in 4 replicates and divided a depth of 40cm to 4 sections,i.e.0~10、10~20、20~30 and 30~40 cm in the rhizosphere of each plant.The result showed that different plant species significantly affected AM fungal colonization and spore density.The symbiosis between AM fungi and blackberry were superior to raspberry in total.The highest AM fungal colonization was Boysen,83%;and the symbiosis between AM fungi and Willamette were superior to Tulameen,the percent colonization of them were 49% and 23%,respectively.Spore density of AM fungi reached maximal values of 17 pre 1g soil in the rhizosphere of Tulameen.At the tested soil depths,the highest AM fungal colonization occurring at the 0~10 cm section did not coincide with higher spore density existing at the 10~20cm section.Sampling depth of soil had a significant effect on spore density and the percent colonization of total,hyphae and vesicle.Spore density exhibited a negative effect on hyphae,vesicle and total percent colonization.While soil available P had a significant positive correlation with hyphae and vesicle percent colonization,and positive effect on total percent colonization.Soil organic matter had a significant positive effect on hyphae,vesicle and total percent colonization.Soil alkali solution N and pH did not exhibit a correlation with AM fungal colonization or spore density.We suggest that the different structures of AM fungi and spore density can be regarded as micro-index of soil environmental monitoring.

通过分析陕西省武功县的图拉明、威廉姆特2种树莓品种和百胜、黑巴提2种黑莓品种根际AM真菌空间分布和定殖程度,研究了AM真菌分布和定殖与植物种类和土壤因子间的相关性。样品分别从0~10cm、10~20 cm、20~30 cm和30~40 cm 4个土层中采集。结果表明,AM真菌的空间分布和定殖模式与植物种类密切相关,总体上黑莓与AM真菌的共生能力明显高于树莓,黑莓以百胜定殖率最高,达83%;树莓的威廉姆特与AM真菌的共生能力较图拉明强,定殖率分别为49%和23%。孢子密度最高发生在图拉明根际,平均17个/g土。土壤采样深度对孢子密度和菌丝、泡囊和总定殖率有显著影响,最高定殖率发生在0~10 cm土层,而最大孢子密度出现在10~20 cm土层。孢子密度与菌丝、泡囊定殖率及总定殖率呈极显著负相关。土壤速效P与菌丝和泡囊定殖率呈极显著正相关,与总定殖率呈显著正相关;有机质与菌丝、泡囊定殖率及总定殖率呈极显著正相关;土壤碱解N和pH与AM真菌定殖和孢子密度没有显著相关性。AM真菌不同结构的定殖程度和孢子密度,可作为土壤环境监测的微观指标。

 
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