云南省油茶低产林改造技术措施及经济效益分析

对云南省梁河、易门、广南等3个县的5个地块进行油茶低产林改造技术措施研究，介绍了土壤、水肥、林分结构优化、良种化改造和病虫害防治等综合改造技术措施。数据表明：经过3年的改造，5个地块（各地块面积为6．67hm^2）年平均鲜果产量366．3kg，平均增效达393．45％。同时，改造地块3年平均收益达21．74万元，扣除投入后，3年净利润达8．14万元。说明低产林改造措施适当，改造效益明显。

Improvement Technology for Low-yield Camellia oleifera Garden in Yunnan Province and Economic Benefit Analysis

The low-yield Camellia oZeifera improvement technical measures were studied by choosing five experimental sites in Lianghe, Yimen and Guangnan County of Yunnan Province, the improvement technology including soil improvement, irrigation, fertilization, optimization of stand structure, improvement through grafting, pest control and disease management. The statistical data showed that, within three years after technical improvement, the annual average yield per mu reached 366.3 kg （ area of each plot is 6.67 hm2 ）, with an average efficiency increase of 393.45 %. The average economic income of five experimental sites （ area for each site was 100 mu） in three years was 217 400 RMB yuan, with the net profit of 81 400 RMB yuan. The results implied that the low-yield improvement technological measures were appropriate, and with promising benefit.