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土壤酶活
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  soil enzymatic activities
     The results showed that the longterm combination application of organic manure and chemical NPK fertilizer improves purple soil enzymatic activities.
     结果表明,长期不同施肥紫色土土壤酶活发生了显著变化。 长期有机肥与化学NPK肥配施有利于紫色土酶活的改善。
短句来源
     The microbial groups and soil enzymatic activities of the two kind of hilly soils in Luhuo was detected.
     研究了四川省甘孜州炉霍县不同植被条件下土壤微生物群落的分布状况及两种土壤酶活情况。
短句来源
  “土壤酶活”译为未确定词的双语例句
     the enzymatic activity in the S5 woodland is upper which compares with others. that in S2 woodland is very lower.
     总体上看,55群落的6种酶活性均高于其他群落:S6、57群落的过氧化氢酶和脱氢酶活性很高,脉酶和多酚氧化酶活性却很低,S2群落的土壤酶活J性较低。
短句来源
     There was no significant correlation between soil enzyme activities and soil pH,while significant correlation was found between soil moisture content,soil total nitrogen content and soil enzyme activities,indicating that soil water and nutrient contents were the key factors of ecological restoration in this region.
     石灰岩退化生态系统土壤酶活之间以及酶活与pH值之间无显著相关性,而含水率和土壤全氮则与土壤酶活性呈显著或极显著相关,说明水分以及养分是石灰岩地区生态恢复的关键性因子.
短句来源
     Compacting with the three substrates of soil enzyme activity and enzymatic hydrolysis, theorder was that CMC>corn straws>wheat straws.
     3种底物下土壤酶活与酶解率大小顺序为CMC>小麦秸秆>玉米秸秆。
短句来源
     the distribution of the soil enzyme activity in the different soil layer was also decreased along with the depth increasing.
     土壤酶活在土壤剖面中的分布随深度增加而降低。
短句来源
  相似匹配句对
     Advances on soil enzymes
     土壤研究进展
短句来源
     Preliminary probe into the influential factors of cellulase activity
     纤维素的影响因子初探
短句来源
     Methods SOD, POD and CAT enzymes analysis.
     方法 分析技术。
短句来源
     the distribution of the soil enzyme activity in the different soil layer was also decreased along with the depth increasing.
     土壤土壤剖面中的分布随深度增加而降低。
短句来源
     Primary Research on Soil Enzymes Runoff Rules from Sloping Field
     坡地土壤流失规律初探
短句来源
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  soil enzymatic activities
Effects of Cd and Pb pollution on soil enzymatic activities and soil microbiota
      
Shoot length and root growth, symbiotic parameters, water transport (in terms of percent relative plant water uptake), and volumetric soil moisture and soil enzymatic activities in response to microbial inoculations were evaluated.
      
In greenhouse trials using sterilized soil amended with either soluble or rock phosphate, inoculation with mutants showed greater positive effect on all of the growth parameters and soil enzymatic activities.
      
Soil enzymatic activities and fertility at crop harvest were measured after continuous 3 years of application, and its residual effects were also studied.
      
Soil enzymatic activities were slightly increased in the [C+M]-soil only.
      


n this paper,we studied the influence on soil

研究了落叶松人工林、针阔混交林以及间伐抚育对土壤微生物含量和土壤酶活牲的影响,并探讨了落叶松人工林地力衰退趋势与生物活性变化的关系。

Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.), a fast-growing, evergreen coniferous tree with high yield and excellent wood quality, is one of the most important tree species for timber production in south China. Because of its high commercial value, native broad-leaved and coniferous forests are often transformed into plantations of pure Chinese fir. The total plantation area of Chinese fir in China is around 9.11 million hectares. Because the area of Chinese fir plantations has expanded rapidly, successive...

Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.), a fast-growing, evergreen coniferous tree with high yield and excellent wood quality, is one of the most important tree species for timber production in south China. Because of its high commercial value, native broad-leaved and coniferous forests are often transformed into plantations of pure Chinese fir. The total plantation area of Chinese fir in China is around 9.11 million hectares. Because the area of Chinese fir plantations has expanded rapidly, successive crops of Chinese fir have been planted on the same site. Many studies have reported a serious decline in the productivity of successive rotations of Chinese fir. Therefore, it is extremely important to prevent productivity decline in Chinese fir plantations in successive rotations. Since establishment of mixture plantation of Chinese fir and broad-leaf species is a practicable measure to prevent productivity decline, many mixture forests of Chinese fir and broad-leaf species were planted in my Farm since the past 30 years. The mixture of Chinese fir and Altingia gracilides is one of successes mixed patterns. In order to determine effect of mixture forest of Chinese fir and Altingia gracilides on water holding capacity and soil fertility improvement, four experimental plots were established in the mixture stand and pure stand of Chinese fir. Biomass and water holding capacities of stand, ground vegetation and deciduous layer were investigated by harvesting method and then physical properties, chemical properties and enzyme activities of soil were analyzed. Results from this study showed that mixture forest of Chinese fir and Altingia gracilides had good function to improve water holding capacity and soil fertility compared with pure stand of Chinese fir. The water holding capacities in mixture and pure plantation of Chinese fir were 2212.84t/hm 2 and 1841.62 t/hm 2 respectively. Soil aggregate composition, porosity and water condition in mixture forest were better than these in pure plantation. So did the soil nutrient condition and organic matter. The organic matter, total nitrogen and total phosphorus of soil in layer of 0~20cm increased by 80.5%, 28.8% and 39.8% respectively compared with pure plantation. The enzyme activities in the mixture forest were more active than in pure plantation. Invertase, urease, acid phosphatase and peroxidase activities in layer of 0~20cm in mixture forest increased by 156.1%, 72.6%, 30% and 10.3% respectively compared with pure plantation. Therefore, the mixture of Chinese fir and Altingia gracilides is a popularization mixed patterns to prevent soil fertility in south China.

对 2 5年生杉木细柄阿丁枫混交林进行研究表明 :混交林对土壤的物理性质、养分含量、酶活性和涵养水源功能均有良好的作用。混交林林分持水量为 2 2 1 2 .84 t/ hm2 ,杉木纯林为 1 84 1 .6 2 t/ hm2。混交林土壤水稳性团聚体组成、孔隙组成和水分状况均比纯林好 ;混交林土壤养分含量比纯林高 ,0~ 2 0 cm层有机质含量比纯林增加 80 .5 % ,全氮 ,全磷、水解性氮、速效磷和速效钾含量分别比纯林提高 2 8.8%、39.8%、32 .0 %、5 6 .6 %和 76 .8% ;混交林土壤酶活性比杉木纯林高 ,0~2 0 cm层转化酶、脲酶、酸性磷酸酶和过氧化氢酶活性分别比纯林增加 1 5 6 .1 %、72 .6 % .30 .0 %和 1 0 .3%。

Effects of longterm organic manure, chemical NPK fertilizer application and the combination application of organic manure and chemical fertilizer on purple soil enzymatic activities were studied. The results showed that the longterm combination application of organic manure and chemical NPK fertilizer improves purple soil enzymatic activities. There are extremely significantly correlation between soil organic matter content and soil CAT and URE activities, and this indicates that organic matter content is...

Effects of longterm organic manure, chemical NPK fertilizer application and the combination application of organic manure and chemical fertilizer on purple soil enzymatic activities were studied. The results showed that the longterm combination application of organic manure and chemical NPK fertilizer improves purple soil enzymatic activities. There are extremely significantly correlation between soil organic matter content and soil CAT and URE activities, and this indicates that organic matter content is an important factor that affectes CAT and URE activities. Soil URE?CAT?NEP activities stimulate each other and soil CAT activity was significantly and positively correlated with soil PPO activity.

研究了长期施有机肥、化学氮磷钾肥及有机无机肥配施对紫色土酶活的影响。结果表明,长期不同施肥紫色土土壤酶活发生了显著变化。长期有机肥与化学NPK肥配施有利于紫色土酶活的改善。土壤有机质含量与土壤脲酶(URE)酶活、过氧化氢酶(CAT)酶活呈极显著正相关(r>0.661,p<0.01,n=14),说明土壤有机质含量是影响土壤CAT、URE酶活高低的重要因素。土壤中URE、CAT、中性磷酸酶(NEP)之间存在相互刺激作用,CAT酶活与多酚氧化酶(PPO)酶活之间存在此消彼长的关系。

 
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