一、一次采育伐的由来: 一次采育伐的原名是“采育结合伐”,1959～1979年,我们在六个林业局搞了七次“采育结合伐”试验。参加人员300名,试验面积3000多公顷。至今仍在乌尔旗汉林业局煤田林场继续进行试验,目的是探讨如何因林、因地制宜地选择采伐方式,解决更新如何跟上采伐的问题。现将二十多年的试验结果列后,用以说明一次采育伐的产生和发展。 1.1959年牙克石林区发生了拖拉机稍马套子下山,改用“新工具”和冰道集材的反常现象。将专用拖拉机和一万多头牛、马长期闲置不用,造成了木材生产效率低,工人劳动强度大,木材损失多的后果。为什么会出现这种反常现象呢?其理由是:“拖拉机满山跑,破坏幼树多,夏季集材破坏地表,造成水土流失”。当时确实有这种现象,但我们不能眼看 First, the origin of a mining: a mining of the original name is “mining combined with cutting”, 1959 ~ 1979, we conducted in the six forestry bureaus seven “mining and cutting” experiment. 300 participants, the test area of ​​more than 3000 hectares. The trial is still being carried out in the coal field forest farms of the Huifeng Banner Forestry Bureau for the purpose of exploring how forestry and logging methods can be selected according to local conditions so as to solve the problem of how to keep up with logging. Now more than 20 years of test results after the column, to illustrate the emergence of a mining and development. 1. In 1959, an abnormal phenomenon occurred in the Yakeshi Forest Zone where tractors used to go downhill slightly and switched to “new tools” and ice skulls instead. Will be dedicated tractors and more than ten head of cattle and horses without leaving for a long time, resulting in low production efficiency of timber, workers labor-intensive, the consequences of the loss of more timber. Why is there such an anomaly? The reason is: “tractors running over the mountain, sapling young trees, summer timber damage to the surface, resulting in soil erosion.” That did happen at that time, but we can not see it