| The rhizosphere is refers to the micro soil area which plant root system activity influence, in the physical, chemical and biological properties differ from other soil. In the microenvironment of the rhizosphere, plant roots, soil and microbes interactions, the rhizosphere becomes the most important and the most intense regional of material exchange and energy flow between the plant and soil environment. A variety of nutrients which plants need and some harmful substance of the soil can through this environment from the soil into the plant body. Because of this reason, make the environment of rhizosphere soil physical and chemical properties and biological chemical process different form general soil. Various nutrient concentration and distribution in rhizosphere soil is different form non rhizosphere soil obviously. Currently, china is in the key phase form traditional agriculture to modern agriculture, the research and regulation of rhizosphere ecological process may change the people’s point, which only pay attention to environmental regulation but neglect development the biological potential of the plant, or only make the soil as a nutrient supply places, while ignoring the soil is a place which material and energy transformation, make people’s view of the science rising to the rhizosphere ecological level which regulates plant-soil-microbes interactions. This study sampling in purple soil and calcareous soil, selected Chinese cabbage, Brassica narinosa bailey, Lettuce, Red moss and Orange tree’s rhizosphere and non- rhizosphere soil as the research object, analysis the Nutrient Content difference through the analysis of experimental data by EXCEL after the determination of basic properties of soil samples in laboratory, the main conclusions are as follows.In the lime soil, soil organic matter, total nitrogen, hydrolysable nitrogen, total phosphorus, total potassium and available potassium’s contents in rhizosphere is higher than non rhizosphere soil. Sample’s organic matter content is in 1.43-2.93%, the organic matter accumulation rate in 5.78-31.63% in the rhizosphere soil. The pH in the 4.90-6.52, the rhizosphere pH is lower than the non rhizosphere soil. The total nitrogen content is in 0.09-0.14%, enrichment ratio is between in 16.67%-40.00%. Hydrolysable nitrogen content is in the range of 66.90-137.01mg/kg, enrichment ratio is between in 12.18%-44.23%. Total phosphorus content is in the range of 1.68-2.69g/kg, Enrichment ratio is low. Total potassium content for 5.05-8.75g/kg, average enrichment rate for 20.80%. Available potassium content is in 69.41-145.82mg/kg, accumulation rate in7.05%-26.37%. Available phosphorus content is in 23.10-75.73mg/kg, lettuce, Brassica narinosa bailey, red moss and cabbage’s rhizosphere soil available phosphorus have cumulative, enrichment rates were 17.22%,37.16%,40.61%,26.68%. But the orange trees and sloping orange tree rhizosphere appear phosphorus deficit area, enrichment rate is negative.In the region of purple soil, soil organic matter, soil total nitrogen, soil hydrolysable nitrogen, soil total phosphorus, soil available phosphorus, soil total potassium and soil available potassium’s content in rhizosphere soil is greater than the non Rhizosphere Soil. Organic matter’s content from 1.14%-3.40%.enrichment rate changes in the range of 22.03%-35.09%. PH in the 4.93-5.43, pH in the rhizosphere lowers than the non rhizosphere soil. The total nitrogen content is in0.07-0.14%, enrichment rate variation range for 16.67%-42.86%. Hydrolysable nitrogen changes in 56.87-95.63mg/kg. Total phosphorus content in 1.61-2.28g/kg, enrichment rate differences vary greatly. Available phosphors content in 28.72-57.61mg/kg, different crop’s enrichment rate are different. Total potassium content is low, in the range of 5.35-7.76g/kg, crop rhizosphere soil total potassium enrichment rate difference is greater. Available potassium content is in 97.80-324.60mg/kg.Crops in the rhizosphere soil organic matter and nutrient content were higher than that in non rhizosphere soil; pH was lower than the non rhizosphere soil. Except orange tree in the lime soil, rhizosphere soil available phosphorus content less than non-rhizosphere soil. In the two kind of soil environment, the data are different, but it is different to different kinds of crops, don’t have change rule obviously. |
