@article{oai:kindai.repo.nii.ac.jp:00009941, author = {高松, 善博 and 高橋, 一郎 and 生駒, 晧晴}, issue = {4}, journal = {近畿大学農場報告, Bulletin of the Experimental Farm of Kinki University}, month = {Oct}, note = {Recently, the farm land reclamation by machine power was carried out various parts of the country, and the reclaimed area is increasing in Japan. It was considerd that the physical properties of reclaimed soil differ from it of the residual soil of shale by weathering. In the present paper, the investigation was carried out on the conditions of growth of orange trees and physical properties of soil in the orange orchard. A-orchard reclaimed by human power, and examination farm reclaimed cutting and banking by machine power are used plots of investigation. And the control plot is adopted A-orchard. Furthermore, the orange tree on object of investigation was mandarin orange that the age of trees were 20 years old. The results of measurement are summarised as follows; (1) The growth of orange trees is good on the early variety on the cutting part of experimental farm and on the medium variety on the control plot. In generally, the growth of trees was better on A-orchard of the control than experimental farm. (2) The surface soil in the investigated plots is containing organic matters of 1.1~5.7%. (3) The consistency limit was that liquid limit is 47~60% at surface soil, and 42-52% at subsoil, and the placity limit is 27~34% at surface soil, 25~43% at subsoil, respectively. (4) The soil hardness of experimental farm is hard than on the A-orchard of control plot, and that is most hard at the 10~20cm soil layer in each of the investigated plots. But, at the A-orchard of control plot was tended to decreasing in accordance with the depth. (5) In three phase distribution of natural conditions, the ratio of solid, liquid and vapor phases are about 48%, 32.5%, 19.5% on the A-orchard of control plot, and are about 53.1%, 29.4%, 17.7% on the experimental farm, respectively. (6) The non-capillary pore and the available soil water were high values about 4.8%, 3.5% on A-orchard of control plot respectively, and there is no difference among investigated plots in the experimental farm., application/pdf}, pages = {63--78}, title = {柑橘園における土壊の物理性と樹勢に関する研究 - 頁岩に由来する土壌について -}, year = {1982}, yomi = {タカマツ, ヨシヒロ and タカハシ, イチロウ and イコマ, キヨハル} }