CAJ | 학술논문

选取广西区6个国有林场桉树人工林的200个土壤样品进行土壤养分测定,分析其养分变异特征和相关性,通过养分分级评定和背景值对比分析桉树人工林土壤养分现状以及桉树种植对土壤养分影响程度.试验结果表明,桉树人工林速效磷变异系数最大,其次为交换性钙,两个指标皆达到强变异性,pH值变异性最小,为弱变异性,其他指标皆为中等变异性.pH值与交换性钙、全氮和全钾、水解氮和速效钾、交换性钙和交换性镁的相关性存在显著水平的正相关.桉树人工林土壤养分现状与其背景值趋势相符,表现出缺磷、缺钾现象.其中速效磷、全钾和速效钾三个指标对比背景值含量偏低.
선취엄서구6개국유림장안수인공림적200개토양양품진행토양양분측정,분석기양분변이특정화상관성,통과양분분급평정화배경치대비분석안수인공림토양양분현상이급안수충식대토양양분영향정도.시험결과표명,안수인공림속효린변이계수최대,기차위교환성개,량개지표개체도강변이성,pH치변이성최소,위약변이성,기타지표개위중등변이성.pH치여교환성개、전담화전갑、수해담화속효갑、교환성개화교환성미적상관성존재현저수평적정상관.안수인공림토양양분현상여기배경치추세상부,표현출결린、결갑현상.기중속효린、전갑화속효갑삼개지표대비배경치함량편저.
Selected 200 soil samples in Eucalyptus plantations of 6 state-owned forest farms of Guangxi province, conducted a determination of the soil nutrients, and analyzed its variability and correlation. By the evaluation of nutrient level and the comparison with background values, the status of the soil nutrients and the effect of planting Eucalyptus were studied. The results were as follows:the CV (coefficient of variability) of available P was the highest, and followed by exchangeable calcium. Those two indicators had comparatively high variability. The CV of pH Value was the least and had lower variability. Other indicators had medium-degree variability. pH Value and exchangeable calcium, total N and total K, hydrolysable N and available K, exchangeable Ca and exchangeable Mg that showed significantly positive correlation. The current situation of soil nutrient in Eucalyptus plantation was consistent with its background values, and showed the deficiency of phosphorus and potassium. Available P, total K and available K were lower compared to the background values.