火炬松水土保持林综合效益试验研究

经过6年的定点试验与示范推广,已证实火炬松适应于淮河流域海拔500米以下各种立地条件,具有速生、丰产,造林技术简单,以及抗寒、耐水湿、抗病等特点。试验结果表明,5年生火炬松林比14年生马尾松林减少土壤侵蚀模数83.9％;营造5年生火炬松可产生的经济效益为22.49万元/km~2,而营造5年生马尾松的经济效益仅为2.37万元/km~2。

Experiment on the Benefit of Torch Pine Used for Soil and Water Conservation

Through six year's experiment at fixed-point, demonstration and popularization, it is verified that the torch pine adapted itself to all kinds of site conditions 500m below sea level in the Huaihe River Basin. The species have the characteristics of fast growing, rich in yield, simple in afforestation technique, capability of resisting aganist cold weather, anti-disease and water-tolerant and so on. The experimental result indicated that torch pine forest planted five years could reduce siol loss by83.9% as compared with that of the masson pine forest planted fourteen years. The economic benefit produced by planting torch pine and masson pine for five years are 225 and 24 thousand yuan per square kilometers respectively.