中国烟草科学
中國煙草科學
중국연초과학
CHINESE TOBACCO SCIENCE
2013年
1期
40-44
,共5页
庞夙%陶晓秋%黄玫%叶利华%张海燕%杨雪%韶济明
龐夙%陶曉鞦%黃玫%葉利華%張海燕%楊雪%韶濟明
방숙%도효추%황매%협리화%장해연%양설%소제명
植烟土壤%肥力评价%限制因子%主成分分析
植煙土壤%肥力評價%限製因子%主成分分析
식연토양%비력평개%한제인자%주성분분석
tobacco plantation soil%evaluation on the fertility%limiting factor%principal components analysis
为了解四川省植烟土壤肥力状况,采用主成分分析和聚类分析相结合的方法,对四川省植烟土壤肥力进行了评价,并对土壤肥力的限制因子进行了分析.结果表明:(1)研究区土壤肥力因子处于中等至强变异强度,有效硫及微量元素的变异强度较大,变异系数均大于90%;(2)全量和速效养分对土壤肥力的影响要高于微量元素,氮素和磷素的影响要高于钾素,有机质和pH的影响也较大;(3)土样综合肥力指标(IFI)值的得分为0.0928~0.5074,聚类分析将其分为高、中、低3个等级,各等级样点比例分别占10.78%、55.88%和33.34%;(4)有机质、全氮、全磷、速效养分、水溶性硼、有效锌、有效铁含量在3个肥力等级间差异达到了显著水平,是限制植烟土壤肥力的主要因子.此结果可为合理提升四川省植烟土壤肥力水平提供参考.
為瞭解四川省植煙土壤肥力狀況,採用主成分分析和聚類分析相結閤的方法,對四川省植煙土壤肥力進行瞭評價,併對土壤肥力的限製因子進行瞭分析.結果錶明:(1)研究區土壤肥力因子處于中等至彊變異彊度,有效硫及微量元素的變異彊度較大,變異繫數均大于90%;(2)全量和速效養分對土壤肥力的影響要高于微量元素,氮素和燐素的影響要高于鉀素,有機質和pH的影響也較大;(3)土樣綜閤肥力指標(IFI)值的得分為0.0928~0.5074,聚類分析將其分為高、中、低3箇等級,各等級樣點比例分彆佔10.78%、55.88%和33.34%;(4)有機質、全氮、全燐、速效養分、水溶性硼、有效鋅、有效鐵含量在3箇肥力等級間差異達到瞭顯著水平,是限製植煙土壤肥力的主要因子.此結果可為閤理提升四川省植煙土壤肥力水平提供參攷.
위료해사천성식연토양비력상황,채용주성분분석화취류분석상결합적방법,대사천성식연토양비력진행료평개,병대토양비력적한제인자진행료분석.결과표명:(1)연구구토양비력인자처우중등지강변이강도,유효류급미량원소적변이강도교대,변이계수균대우90%;(2)전량화속효양분대토양비력적영향요고우미량원소,담소화린소적영향요고우갑소,유궤질화pH적영향야교대;(3)토양종합비력지표(IFI)치적득분위0.0928~0.5074,취류분석장기분위고、중、저3개등급,각등급양점비례분별점10.78%、55.88%화33.34%;(4)유궤질、전담、전린、속효양분、수용성붕、유효자、유효철함량재3개비력등급간차이체도료현저수평,시한제식연토양비력적주요인자.차결과가위합리제승사천성식연토양비력수평제공삼고.
In order to clarify the soil fertility status of tobacco-growing soil in Sichuan Province, Soil samples were tested and soil fertility limiting factors were analyzed by using principal component analysis combined with the cluster analysis. The results showed:(1) the soil fertility factors in the study area were from medium variability to strong variability, the variability of available sulfur and trace elements were intensive with variation coefficient more than 90%; (2) the influence on soil fertility by soil total nutrient contents and available nutrient contents was greater than that by the trace elements;that by nitrogen and phosphorus was greater than that by the potassium, and the organic matters and pH also had a greater influence; (3) the IFI values of soil samples were from 0.0928 to 0.5074. The IFI values were divided into the high, medium and low levels by the cluster analysis with their proportion 10.78%, 55.88%and 33.34%respectively;(4) the differences of organic matters, total nitrogen, total phosphorus, available nutrient, water-soluble boron, available zinc and available iron contents were significant in the three fertility degrees, which meant these were the main factors in limiting tobacco-growing soil fertility. These could provide a reference for rationally improving tobacco-growing soil fertility in Sichuan province.
