中文摘要：

选取福州茉莉种植土壤,对常规与有机种植模式下的0-50 cm土层土壤团聚体组成与分布、平均质量直径D（MW）、几何平均直径D（GM）、分形维数（D）进行了测定与分析。结果表明：1常规茉莉种植土壤在0-50 cm土层以微团聚体（〈0.25mm）含量最高,67.63%,而〉1 mm粒级团聚体含量最低,4.13%;有机茉莉种植土壤在0-20 cm土层以大团聚体（R0.25）含量居多,59.30%,在20-50 cm土层以微团聚体（〈0.25 mm）所占比重大,53.36%;2有机种植在0-50 cm土层（R0.25）含量增加,分别提高了84.27%、126.85%、235.38%;3与常规种植相比,有机茉莉种植土壤团聚体D（MW）和D（GM）在0-50 cm土层均有所提高,常规和有机茉莉种植土壤团聚体D分别为2.84-2.92和2.53-2.85,有机茉莉种植土壤团聚体D相对较低,表明有机种植提高了土壤团聚体的稳定性。

英文摘要：

In this paper,the soils of jasmine plantation from Fuzhou were taken as the study object. Soil aggregate composition,distribution and stability,including mean weight diameter（ D（MW））,geometric mean diameter（D（GM）） and fractal dimension（ D） of 0—50 cm soil layer under common and organic cultivation were measured and analyzed. The results showed that：（ 1） The soil aggregate in common jasmine cultivation is dominated by micro aggregate（ 0. 25mm） in 0—50 cm soil layer,its percentage is 67. 63%,While the soil aggregate of 1 mm is the lowest,its percentage only is 4. 13%; The content of macro aggregate（ R0. 25） in 0—20 cm soil layer of organic Jasmine cultivation is majority,and the percentage is up to 59. 30%; In the 20—50 cm soil layer,the percentage of micro aggregates is significant,and the percentage is 53. 36%;（ 2） Compared with common cultivation,the organic cultivation in the 0—50 cm soil layer increases the content of macro aggregate（ R0. 25）,reached 84. 27%,126. 85% and 235. 38%,respectively;（ 3） Compared with common cultivation,mean weight diameters（ DMW） and geometrical mean diameters（ DGM） of soil aggregates in organic jasmine cultivation are improved in 0—50 cm soil layer. The fractal dimensions numbers of soil aggregates in common and organic cultivation are ranged within 2. 84—2. 92 and 2. 53—2. 85,respectively. The fractal dimension numbers of soil aggregates in Organic Jasmine cultivation is relatively lower,which indicates that organic cultivation improves the stability of soil aggregates.