始果头5年内密植比稀植高产。但株间竞争迅即成为限制因子。到结果第十年时,稀植区的单株和每公顷产量均超过了密植区。10年间的平均产量并无多大差别。但可看出稀植区此后将进一步增长,其产量和经济收益可望增加;而密植区已于十年内经历了产量高峰,将逐步衰落下去,全部试验树均于1974年秋季铲除(结束试验)。 In the first five years, close planting was more intensive than thin planting. But competition between strains quickly became a limiting factor. By the tenth year of the result, the yield per plant and plant per hectare in the sparsely planted area exceeded that of the densely planted area. There is not much difference between the average yields in 10 years. However, it can be seen that the area under thinning will grow further thereafter, and its output and economic returns are expected to increase. The densely populated area has experienced the peak of output within a decade and will gradually decline. All the test trees were eradicated in the autumn of 1974 ).