CAJ | 학술논문

生物质的热解材料会对其生物炭的物理化学性质产生较大影响，进而影响其田间应用效果。选取四种乔木（橡树、桑树、樟树和松树）、三种草本植物（芦苇、蒿和蕨类）和两种作物秸秆（玉米秆和油菜秆），在同等热解条件下（550℃）制备生物炭，对比其理化性质的差异。结果显示，秸秆生物炭的可溶性Cl-和K+含量、EC和CEC均显著高于乔木和草本生物炭，有效磷也呈现类似规律，而可溶性Na+、Ca2+和Mg2+含量以及pH、SO2-4、NH+4-N、NO-3-N等指标在三类生物炭之间无显著差异。乔木生物炭和草本生物炭之间在各个指标上均无显著差异。这表明，从营养元素、CEC和改良酸性土壤的角度来看，秸秆生物炭比乔木和草本生物炭更适合作为土壤改良剂。
생물질적열해재료회대기생물탄적물이화학성질산생교대영향，진이영향기전간응용효과。선취사충교목（상수、상수、장수화송수）、삼충초본식물（호위、호화궐류）화량충작물갈간（옥미간화유채간），재동등열해조건하（550℃）제비생물탄，대비기이화성질적차이。결과현시，갈간생물탄적가용성Cl-화K+함량、EC화CEC균현저고우교목화초본생물탄，유효린야정현유사규률，이가용성Na+、Ca2+화Mg2+함량이급pH、SO2-4、NH+4-N、NO-3-N등지표재삼류생물탄지간무현저차이。교목생물탄화초본생물탄지간재각개지표상균무현저차이。저표명，종영양원소、CEC화개량산성토양적각도래간，갈간생물탄비교목화초본생물탄경괄합작위토양개량제。
Feedstock characteristics strongly influence the physicochemical characteristics of pyrolyzed biochars, thus affecting the effects of biochars. In this research, the physicochemical characteristics of biochars pyrolyzed under the same pyrolysis condition(550℃)from nine feedstocks(four arbors:oak, mulberry, camphor tree and pine tree;three shrubs:phragmites, artemisia and fern;two crop straws:rape stalks and corn stalks)were examined. Soluble Cl- and K+, available phosphorus, EC, and CEC were generally higher in the straw-derived biochars than in the arbor- and shrub-derived biochars. However, there was no significant difference in soluble Na+, Ca2+, Mg2+and SO2-4 , pH, NH+4-N and NO-3-N among the three categories of biochars. From the perspective of the improvements of soil nutrients, CEC, and acidi-ty, straw biochar is preferable over arbor and shrub biochars.