CAJ | 학술논문

对采自剑阁县45个乡镇的植烟土壤的14项养分化学指标进行了测定和分析。先以隶属度计算法求出各单项养分指标的适宜性，再利用主成分和聚类方法对土壤养分状况进行多指标综合评分和适宜度类别划分。结果表明：剑阁植烟土壤养分在不同乡镇间情况差异明显；14项参比指标中，每个土壤样品平均约5项指标达到适宜状况；除交换镁和水溶性氟以外，其它中微量元素营养指标比较接近适宜养分水平；大量营养中钾元素距适宜养分水平的差距最大。不同乡镇的土壤pH值变动较大，在施肥时应充分考虑其影响。用主成分综合评分法和聚类分析将应试群体划分为5类，为评价剑阁各乡镇土壤的烟草宜栽性提供了参考。
대채자검각현45개향진적식연토양적14항양분화학지표진행료측정화분석。선이대속도계산법구출각단항양분지표적괄의성，재이용주성분화취류방법대토양양분상황진행다지표종합평분화괄의도유별화분。결과표명：검각식연토양양분재불동향진간정황차이명현；14항삼비지표중，매개토양양품평균약5항지표체도괄의상황；제교환미화수용성불이외，기타중미량원소영양지표비교접근괄의양분수평；대량영양중갑원소거괄의양분수평적차거최대。불동향진적토양pH치변동교대，재시비시응충분고필기영향。용주성분종합평분법화취류분석장응시군체화분위5류，위평개검각각향진토양적연초의재성제공료삼고。
Nutrient status of tobacco soils in Jiange County are analyzed based on the membership grade of the 14 kinds of soil nutrition indices, according to the evaluation standard of nutritional status of tobacco soil. And then the principal component analysis and cluster analysis are employed to overall evaluated nutrient status of soil sampled from 45 villages or town. The results show that there are evident differences of nutritional status in Jiang tobacco soils. On average, each sample only has about 5 nutrition indices with the membership grade belonging to suitable status among 14 indices of 45 samples, Most indices of micronutrient elements is close to suitable level except water soluble chloride ion and exchangeable magnesium. The membership grade of nutrient status on potassium is the lowest one of the macronutrient indices. Membership grade of soil pH changes with a wide range. All samples could be clustered into 5 groups according to the comprehensive evaluation on soil suitability for tobacco plant.