影響生物炭基氮肥氮素釋放因素的研究.pdf

1、分類號 S143.1+5 學校代碼 10129U D C 631.8 學 號 2012204021影響生物炭基氮肥氮素釋放因素的研究Study on The Influence Factors of N Release ofThe Biochar-based Nitrogen Fertilizer申 請 人：梁桓學科門類：農(nóng) 學學科專業(yè)：植物營養(yǎng)學研究方向：優(yōu)質(zhì)高產(chǎn)農(nóng)作物的營養(yǎng)與施肥指導教師：索全義 教授論文提交日期：二〇一五年六月St

2、udy on the influence factors of N release of the biochar-basednitrogen fertilizerAbstractGood pore structure made biochar had the strong ability of adsorption andoxidation resistance.Biochar as slow control material comb

3、ined with ammoniumnitrate, not only could delay the release rate of nitrogen, also could effectivelyreduced the loss of soil nutrients. It could also provide some nutrient for plants growthafter applied into the soil . I

4、n this paper, we used maize straw biochar (YJC) andartemisia sphaerocephala krasch biochar (SHC) as the material, and studied theinfluence of different carbon materials, manufacturing process and conditions and theenviro

5、nment condition on N release through the way of mixed granulation andadsorption granulation.Then to evaluate the effect through immersion experiment, soilcolumn leaching experiment and soil nutrient release experiments.

6、The results are asfollows:(1) The properties of the biochar was influenced by material type andcarbonization temperature. The microstructure of maize straw biochar and artemisiasphaerocephala krasch biochar were destroye

7、d, C, P, K and ash content increased, N,H content was lower, pH and specific surface area increased, effective NPK contentwith the increase of carbonization temperature. The content of each element andphysical and chemic

8、al properties of two kinds of biochar were obvious differenceunder the same carbonization temperature, the microporous structure of maize strawbiochar was damaged by high temperature, and its specific surface area and to

9、talentrance and average pore diameter and pH were greater than the artemisiasphaerocephala krasch biochar, while the content of C was less than that the artemisiasphaerocephala krasch biochar.(2) Immersion experiment and

10、 soil column leaching experiment showed that,Artemisia sphaerocephala krasch biochar (600 ℃) adsorption fertilizer c1t3 and 50%maize straw biochar (600 ℃) mixed fertilizer were the best. Wallpaper glue foroptimum binder,

11、 and with the ratio of 1: 10 to biochar.(3) Soil nutrient release experiments show that, the nutrient release speed wasaccelerated along with the increase of soil water content. The effects of environmentaltemperature on