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一、试验目的黑荆是一个贫瘠林地改良树种,为了弄清可期望它达到多大程度的土壤改良效果,以及掌握在第一次伐期(8年)后的土壤条件的实际改良情况,因此,进行了关于化学分析和物理性质的对比,并利用指示植物进行判定。
I. THE PURPOSE OF THE EXPERIMENT The black wattle is an improved tree species of barren woodland. In order to understand the soil improvement effect to which it is expected to reach and to grasp the actual improvement of the soil conditions after the first cutting (8 years) A comparison was made between the chemical analysis and the physical properties and the indication of the plants was used for the determination.