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对杉木新造林地套种穇子复合经营模式进行调查,结果表明,杉木新造林地套种穇子除了能显著促进幼林生长,还能保护新造林地土壤;并且套种穇子的杉木幼树中平均树高、胸径分别达到4.57 m和6.22 cm,比未套种穇子的林分高27.3%和47.7%。套种模式的短期收益显著,投入产出比在1:3以上,达到了复合经营目的。文中还对在杉木新造林地套种穇子的关键技术进行了总结,以期为类似地区复合经营提供参考。
The results showed that the intercropping raccoon doggrass in the newly afforestation field of Chinese fir could not only significantly promote the growth of young trees but also protect the soil of the newly afforestation land. The height and the diameter at breast height reached 4.57 m and 6.22 cm, respectively, which were 27.3% and 47.7% higher than that of the non-intercropped razor clams. Short-term benefit of intercropping model is significant, and the input-output ratio is above 1: 3, achieving the purpose of compound operation. The paper also summarizes the key techniques of intercropping razor clams in new afforestation sites in order to provide reference for the similar operations in this area.