The Recycling Use of the Tree Pruned Branch Leaf Crushing to Green Land in the City

对树木破碎芯片的有效利用情况进行了研究。所调查的房屋开发中树木压碎芯片的施工案例。树木破碎芯片的性能因加工设备类型和树种不同而不同。估算了改建住宅开发中树木碎屑的生成率。在地面条件不同的地方，对树木破碎尖端铺设厚度、切屑形状、化学和物理性能进行了研究。根据这一系列调查研究的结果，对树木破碎芯片利用的基本途径进行了评估。澄清的结论可以概括为：新鲜的薯片只生产出来，很难分解，因为水分含量高，对植物组织的活性也很丰富。落叶阔叶树的碎屑分解速度慢于常绿针叶树的碎屑。当芯片铺设时，芯片内的温度上升，然后逐渐下降到气温。无法辨认出分解推进的迹象。当芯片覆盖厚度为5 cm左右时，防除杂草效果不佳。根据切屑的CN比和EC值可以估计切屑的分解速度和程度。

The case of the effective utilization of the tree crushing chip was investigated. Construction case of the tree crushing chip in the housing development which investigated. The property of the tree crushing chip is different by type of the processing equipment and tree species. The generation rate of tree crushing chip in reconstruction housing development was estimated. In the place where the condition of the ground surface differs in respect of the tree crushing tip laying thickness, chip shapes, chemical and physical property was investigated. From the result of these a series of investigation research, the fundamental approach of the utilization of the tree crushing chip was estimated. Clarified conclusion can be summarized as follows : The fresh chip only of producing, was difficult to be decomposed, because the water content was also high on the activity of plant tissue abounding. The decomposition of the chip of deciduous broad-leaved tree was slower than that of the chip of the evergreen needle-leaved tree. The temperature in the chip rose, when the chip was laid, and it dropped gradually to air temperature. The sign in which the decomposition advanced could not be recognized. The effect of the weed generation control could not be accepted, when the chip overlay thickness was about 5cm. It was possible to estimate speed and degree of the chip decomposition at CN ratio of the chip and value of EC.