Study Of Soil Facilitate Technology To Granite And Gneiss Mountain In North China

It degenerated seriously that gneiss and granite mountain soil in North China,inferior soil environment is the restrictive factor in this area to restore vegetation.Selected pilot sites in Hebei Village as Pingshan Gong Nan stone basin, Pingshan is the old revolutionary base areas,in response to the call of the country, so rich people,old liberated areas,the development of agriculture and forestry industry is an important way.But the barren soil to vegetation encountered a great deal of suffering.Therefore,the study contributed to accelerated soil,using different site preparation methods and different fertilizer was applied to compare test methods,and then identify the most suitable methods to promote soil test area,while the granitic gneiss mountain area in North China to provide the theoretical basis,granite gneiss area for the further implementation of the Forest to provide technical support.This mountainous area of Granite Gneiss poor soil degradation in North China area, as the research object,use four kinds of soil preparation (blasting the land,fish-scale pit site preparation, soil preparation and fish-scale pit-wing point-like site preparation) and three kinds of fertilizer(slow release fertilizer, bio- organic fertilizer,microbial agents)and different ratio of fertilizer, to take the field sampling and laboratory analysis methods combined effect of soil improvement were studied, results showed that:(1) Different land preparation methods and different treatments on soil nutrients in the soil contribute to soil metals and soil release rate of particle size the impact of the performance of the blasting site preparation>cave-like site preparation> wing fish-scale pit>fish-scale pit;different treatment to organic fertilizer processing the most obvious. Four kinds of site preparation effects on soil contributed to the performance of organic matter and nutrients in the soil release,soil release and metal elements such as soil particle size change to <1mm size of soil weight (Not assisted fertilization)as an example:Explosive Technique to improve weathering rate of 9.43%;fish-scale pit site preparation to improve weathering rate of 4.84%;wing pieces of fish-scale pit increased weathering rate of 7.14%;cave-like site preparation to improve weathering rate of 8.64%. (2) With 3 new fertilizer to increase the gradient,soil nutrients,metals in soil and soil particle size are changes in different degrees.Which release fertilizers to and (300g/point) processing,bio-organic fertilizer to (2000g/point) treatment, microbial fertilizer to (150g/point) the best.Ratio of fertilization on soil weathering the obvious differences in general to good effect NPK treatment.Three new fertilizer processing various gradient effects on soil contributed to the performance of soil organic matter and nutrients in the release,on the release of metal elements in soil and soil particle size effects and so on,to <1mm size of soil weight as an example: release compound gradient in the mixed fertilizer treatments to (300g/point) the best effect, the increased weathering rate of 18.20%;bio-organic fertilizer treatments gradient to (2000g/point) the best effect, the increased weathering rate of 22.82%;microbial fertilizer treatments gradient to (150g/point) the best effect, the increased weathering rate of 15.00%,and three kinds of new fertilizers among the best bio-organic fertilizer.(3) Natural state with the degree of weathering of deeper,nutrient indexes all show different degrees of growth,greater than 1mm decreasing size of soil particles less than 1mm size of soil particles gradually increased,indicating the continuous increase with the degree of weathering,degradation poor soil conditions were gradually reversed.At the same time as the soil parent material,increasing the contact area with the outside world, the natural weathering degree and growing trend.(4) Laboratory simulation of rock weathering on the role of fertilizers. Three kinds of fertilizers have promoter action on the Na,Ca,Fe,K,Cr,Pb,Mg,Al,Mn,Cu and Zn and other metal elements release ,reveals three kinds of fertilizers can speed up the rate of rock weathering,and the bio-organic fertilizer is the best of all。...