CAJ | 학술논문

以三峡库区紫色土为对象，研究了稻田、果园、菜田和人工林地等4种不同土地利用方式对土壤理化性质及土壤总团聚体和水稳性团聚体的影响。结果表明，稻田土壤的土壤容重最低、孔隙度最大、田间持水量最大；而林地土壤的孔隙性和持水性最差。〉0．25mm总团聚体以菜田最高，稻田最低；〉0．25mm水稳性团聚体数量表现为：菜田〉林地-稻田〉果园（P〈0．05）；稻田土壤pH值、有机质和全氮含量最高，明显高于果园、菜田和人工林地，稻田土壤碱解氮含量明显高于果园和人工林地（P〈0．05），土壤全磷、有效磷和速效钾含量以果园最高，林地最低。
이삼협고구자색토위대상，연구료도전、과완、채전화인공임지등4충불동토지이용방식대토양이화성질급토양총단취체화수은성단취체적영향。결과표명，도전토양적토양용중최저、공극도최대、전간지수량최대；이임지토양적공극성화지수성최차。〉0．25mm총단취체이채전최고，도전최저；〉0．25mm수은성단취체수량표현위：채전〉임지-도전〉과완（P〈0．05）；도전토양pH치、유궤질화전담함량최고，명현고우과완、채전화인공임지，도전토양감해담함량명현고우과완화인공임지（P〈0．05），토양전린、유효린화속효갑함량이과완최고，임지최저。
Soil physical and chemical properties under different land--use patterns （paddy field, orchard, vegetable field and artificial woodland） in purple soil of Three Gorges Reservoir Area were studied in this paper. The results showed that pad- dy field had the lowest bulk density, the greatest porosity and field capacity~ under the condition of dry sieve, vegetable field had the greatest 〉0.25ram soil aggregates and paddy field had the least; under the condition of wet sieve, the amount of 〉0. 25ram soil aggregates showed as vegetable field 〉 artificial woodland = paddy field 〉 orchard （P〈0.05）. Soil pH, organic matter and total N of paddy field was significantly higher than orchard soil, vegatable soil and artificial woodland soil; and soil alkali--hydrolyzable N of paddy field was significantly higher than orchard soil and artificial woodland soil （P〈0.05）. soil total P, available P and available K of orchard soil was the highest among these four land--use patterns.