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The content of NH4+-N, available phosphorus, available potassium, and total phosphorus in soil under canopy were 13.33%, 20.04%, 16.52%, and 4.30% higher than those in gap.
      
Daily changes in soil water content, transpiration, and evaporation of the Caragana intermedia woodland with different vegetation coverage, slope gradient, and slope aspect were simulated from 1971 to 2000.
      
However, recent studies have documented that the practice of this system has led to dramatic decreases in soil fertility and forest environment as well as in productivity.
      
The relationships of fine root biomass, SRL and RLD with available nitrogen in soil, average soil temperature per month in 10 cm depth and soil moisture content were analyzed.
      
Seasonal dynamics of fine roots was associated with available nitrogen in soil, soil temperature in 10 cm depth and moisture content.
      
Fine root biomass has a significant relationship with available NH4+-N in soil.
      
Available NO3--N in soil, soil temperature in 10-cm depth and moisture content have a positive correlation with fine root biomass, SRL and RLD, although these correlations are not significant (P >amp;gt; 0.05).
      
The effect of roots (the finest roots) in soil-root composites (undisturbed soils) was analyzed.
      
The water content, proline and chlorophyll content of different species changed with the increase in soil water stress.
      
oblata decreased with the decrease in soil water content.
      
The contents of the tested microelements in soil fauna had significant correlations with their environmental background values, litter decomposition rate, food habit of soil fauna, and its absorbing selectively and enrichment to microelements.
      
Obviously, the further study on the fractal theory application in soil structure and soil properties has important significance.
      
The results indicated that there was a distinctive vertical distribution of the soil animal communities in the forest litter layer, but it differed from that in soil below the litter layer.
      
matsutake isolates was significantly stimulated in soil by supplemented with 0.5%~2.0% olive oil.
      
Seasonal dynamics of fine root biomass, RLD, and SRL showed a close relationship with changes in soil moisture, temperature, and nitrogen availability.
      
Multiple regression analysis showed that variation in soil resource availability could explain 71-73% of the seasonal variation of RLD and SRL and 58% of the variation in fine root biomass.
      
The value of pH in soil was higher, and soil nutrient condition of rhizosphere, especially available nutrient, was not as well in intercropping as that in tea grown alone.
      
The latter property is of practical significance for its uses in soil and water bioremediation under the cold climatic conditions of Bashkortostan and other regions.
      
Effect of Shale Kerogen Oxidation Products on Biodegradation of Oil and Oil Products in Soil and Water
      
The effect of oxidation products of shale kerogen (high-molecular-weight acids with 6-22 carbon atoms) on biodegradation of oil and oil products in soil and water was studied.
      
 

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