我县徐家渡公社属油茶老林改造基地。有油茶老林五万七千多亩。虽然油茶生产历史较长,但管理粗放,单产很低,一九七三年,平均每亩油茶产油三斤五两。从一九七四年起,为了改变低产面貌,利用春插、秋收前的时间,集中全社劳力,进行油茶老林改造、复壮工作,大搞油茶林地基本建设。具体作法是:全面砍杂、挖除柴兜、全垦深挖(树冠内浅锄)清除杂草、水平作带。在全面抚育的基础上,把跑土、跑水、跑肥的“三跑”林地,改造成保水、保肥、保土的“三保”林地三万多亩。油茶“三保”地,当年叶茂、二年增产、三年 My county Xujiadu commune is a transformation of Camellia oleifera base. There are more than 57,000 mu of Camellia forest. Although there is a long history of production of Camellia oleifera, its management is extensive and its yield is very low. In 1973, the average yield per acre of Camellia oil was 52%. Since 1974, in order to change the appearance of low-yielding products, we must concentrate on the labor force in the whole village and make efforts to rebuild and rejuvenate the old tea plantation using the policies of spring insertion and harvest before the autumn harvest. Specific practices are: comprehensive chopped, dug Chai pocket, all Ken dig deep (shallow canopy within the hoe) weeds, the level of belt. On the basis of comprehensive tending, the “three runs” of forest land that runs on soil, running water and running fertilizer will be transformed into more than 30,000 mu of “three guarantees” of forest land that contain water, fertilizer and soil. Camellia “three guarantees”, when Yemao, two years yield increase, three years