【摘要】 本文调查研究了雷州林业局唐家林场、龙门林场菠萝与桉材轮作对林木生长和土壤的影响．结果表明：菠萝与桉树轮作．有利于桉树生长，单位面积林本蓄积量和年生长量均比对照林分显著增加．经济效益显著；土壤养分和土壤结构状况也有改善．作为农林复合经营的有益尝试，值得在有条件的地区推广．更多还原

【Abstract】 An investigation on effects of rotation of eucalyptus plantation with pineapple on trees and soil was carried out in Tangjia Tree Farm and Longmen Tree Farm of Leizhou Forestry Bureau, Guangdong, China.Results showed that the rotation of eucalyptus plantation with pineapple was advantageous to the growth of eucalyptus and the tree storage of per unit of area, and annual growth amount increased significantly oompared with that of the control. Higher economic benefits were achieved, and soil nutnents and soil structure were improved. The rotation is worth spreading to the other regions that have the advantages.更多还原