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该项试验研究1971年立题,1972年开始实施,即1972年第1次间伐(透光伐),1977年第2次间伐,1986年结束。历经14年的连续、定点、定期观测,获得了连续、系统、完整的材料,并应用数理统计方法和微机处理。从研究结果看,在当地的立地条件和经营水平下,透光伐区的最终经济效益最好,试验全期其纯利润达2599.9元/hm~2,投入效益率149.7%,产出效益率26.9%,利润总额比率130.2%,各项经济指标均居各试验区之首。疏伐Ⅲ区上述各项经济指标均属末位。
The pilot study of the 1971 legislation, 1972, began to implement, that is, in 1972 the first thinning (translucent cutting), the second thinning in 1977, concluded in 1986. After 14 years of continuous, fixed-point, regular observation, access to a continuous, systematic, complete material, and application of mathematical statistics and computer processing. From the research results, under the local site conditions and operating level, the final economic benefit of the light-transiting cutting area is the best. During the whole experiment period, its net profit reached 2599.9 yuan / hm ~ 2 and the investment efficiency rate was 149.7%. The output efficiency ratio 26.9%, the total profit ratio of 130.2%, all economic indicators in the first test area. The thinning Ⅲ area of the above economic indicators are the last place.