本文研究了桉树人工林间种山毛豆的适应性及其对林木和土壤的影响．结果表明，在一年生桉树人工林下，山毛豆生长正常，以后，随着林地的逐浓荫蔽，生长有逐渐衰退现象；间种山毛豆当年，可能对林木生长有一定影响，但可通过改善间种方式而消除．第二年以后对桉树生长的促进作用逐渐显著；间种山毛豆对提高土壤肥力也有一定作用，对促进林业生产的持续发展有重要意义． This paper studied the adaptability of eucalyptus plantation forests and its effects on trees and soil. The results showed that under the annual eucalyptus plantations, the growth of M. capitatum was normal. Afterwards, the growth gradually declined with the gradual shading of the forestland. However, during the year, Way to eliminate. The promotion of eucalyptus growth gradually became obvious after the second year. The intercropping of Soybean Germplasm played a certain role in improving soil fertility, which is of great significance to the sustainable development of forestry production.