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为了进一步了解油桐高产条件,以便更有效地指导生产,1980—1983年我们在本省几个油桐产区固定几块有代表性的油桐林,每年定期进行调查观察,现将初步结果,整理如下。 一、材料与方法 调查观察是在1964年营造的油桐林内进行。在高淳荆山、深水傅家边和盱眙林柴场共选定5块样地,每年进行逐株调查,测定其生长和结果情况,并进行林地土壤剖面调查分析和经营管理情况记录。 二、结果与分析 四年调查观察结果整理为表1、2。就两表,可看出以下问题: (一) 立地条件的好坏是影响油桐产量的关键因子 如高淳荆山工区金鸡岭和盱眙林柴场天堂山中坡油桐林,立地条件比较
In order to further understand the high yielding condition of tung tree so as to guide the production more effectively, from 1980 to 1983, we fixed several representative tung oil trees in several tung oil producing areas of our province and conducted regular survey and observation each year. Now, as follows. First, materials and methods Survey observation is in 1964 to create the tung tree forest. A total of 5 plots were selected from Jing-shan, Fu-bian and Shao-lin Chai Chai in Gaochun. The investigation was carried out on a yearly basis and the growth and results were measured. The investigation and analysis of forest soil profile and records of operation and management were conducted. Second, the results and analysis Four-year survey findings are summarized in Table 1 and 2. On the two tables, we can see the following questions: (A) site conditions are the key factors affecting the production of tung tree Jinjiling such as high-Jingshan Jingjiao District and Chai Lin Chai Tiantang Mountains mid-slope Paulownia forest, site conditions