茶叶科学
茶葉科學
다협과학
2014年
2期
129-136
,共8页
王峰%陈玉真%尤志明%吴志丹%江福英%陈芝芝%翁伯琦
王峰%陳玉真%尤誌明%吳誌丹%江福英%陳芝芝%翁伯琦
왕봉%진옥진%우지명%오지단%강복영%진지지%옹백기
土壤类型%茶园%土壤团聚体%团聚体稳定性
土壤類型%茶園%土壤糰聚體%糰聚體穩定性
토양류형%다완%토양단취체%단취체은정성
soil type%tea garden%soil aggregates%aggregate stability
采用野外调查和室内分析相结合的方法，对武夷山市5种主要土壤类型（黄壤、红壤、潮砂土、高山草甸土、紫色土）茶园的土壤团聚体组成及其稳定性特征进行了研究。结果表明：茶园土壤大团聚体含量均随土层加深呈减少的趋势，微团聚体含量则相应上升。黄壤、高山草甸土、紫色土>5 mm 的大团聚体含量最高，所占比例在18.07%~89.23%；红壤和潮砂土土壤团聚体含量则以<0.25 mm 微团聚体含量最高，所占比例为37.16%~63.91%。茶园土壤R0.25（>0.25 mm水稳性团聚体）含量在36.08%~97.23%之间（均值为73.60%）；高山草甸土平均质量直径（MWD）和几何平均值（GMD）均显著高于其他土壤类型，黄壤和紫色土次之，潮砂土最低，分形维数（D）的变化趋势则相反。相关分析表明，土壤团聚体组成及稳定性指标与土壤有机碳、全氮、全磷、容重、孔隙度、砂砾、粉粒有显著相关性，与土壤C/N、全钾、pH、粘粒的相关性不明显。
採用野外調查和室內分析相結閤的方法，對武夷山市5種主要土壤類型（黃壤、紅壤、潮砂土、高山草甸土、紫色土）茶園的土壤糰聚體組成及其穩定性特徵進行瞭研究。結果錶明：茶園土壤大糰聚體含量均隨土層加深呈減少的趨勢，微糰聚體含量則相應上升。黃壤、高山草甸土、紫色土>5 mm 的大糰聚體含量最高，所佔比例在18.07%~89.23%；紅壤和潮砂土土壤糰聚體含量則以<0.25 mm 微糰聚體含量最高，所佔比例為37.16%~63.91%。茶園土壤R0.25（>0.25 mm水穩性糰聚體）含量在36.08%~97.23%之間（均值為73.60%）；高山草甸土平均質量直徑（MWD）和幾何平均值（GMD）均顯著高于其他土壤類型，黃壤和紫色土次之，潮砂土最低，分形維數（D）的變化趨勢則相反。相關分析錶明，土壤糰聚體組成及穩定性指標與土壤有機碳、全氮、全燐、容重、孔隙度、砂礫、粉粒有顯著相關性，與土壤C/N、全鉀、pH、粘粒的相關性不明顯。
채용야외조사화실내분석상결합적방법，대무이산시5충주요토양류형（황양、홍양、조사토、고산초전토、자색토）다완적토양단취체조성급기은정성특정진행료연구。결과표명：다완토양대단취체함량균수토층가심정감소적추세，미단취체함량칙상응상승。황양、고산초전토、자색토>5 mm 적대단취체함량최고，소점비례재18.07%~89.23%；홍양화조사토토양단취체함량칙이<0.25 mm 미단취체함량최고，소점비례위37.16%~63.91%。다완토양R0.25（>0.25 mm수은성단취체）함량재36.08%~97.23%지간（균치위73.60%）；고산초전토평균질량직경（MWD）화궤하평균치（GMD）균현저고우기타토양류형，황양화자색토차지，조사토최저，분형유수（D）적변화추세칙상반。상관분석표명，토양단취체조성급은정성지표여토양유궤탄、전담、전린、용중、공극도、사력、분립유현저상관성，여토양C/N、전갑、pH、점립적상관성불명현。
Based on the field survey and laboratory analysis, the soil aggregate composition and stability characteristics in five soil types (yellow soil, red earth, moisture sandy soil, alpine meadow soil and purple soil) of tea garden in Wuyishan city were investigated. The results showed that the contents of soil macro-aggregates decreased with soil depth, but micro-aggregates increased correspondingly in the five soil types of tea garden. The contents of soil macro-aggregates (>5 mm) were highest, accounting for 18.07%-89.23% of the total in yellow soil, alpine meadow soil and purple soil, the soil micro-aggregates (<0.25 mm) were the highest, accounting for 37.16%-63.91%of the total in red soil and moisture sandy soil. The proportion of R0.25 (water-stable aggregate>0.25 mm ) was between 36.08%and 97.23%(sample means 73.60%). The mean weight diameter (MWD) and geometric mean diameter (GMD) of soil aggregates in alpine meadow soil of tea garden were significantly higher than those in other soil types, followed by those in yellow soil and purple soil, the lowest was in moisture sandy soil. The fractal dimension (D) changes in the opposite trend simultaneously. The soil aggregate composition and stability were significantly correlated with soil organic carbon, total N, total P, soil bulk density, soil porosity, sand and silt, but not significant correlated with C/N, total K, pH value and clay.
