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张广才岭上部寒温地带生长的原始云冷杉林，经采伐后迹地次生演替成为亚高山禾草草甸。本研究应用新技术５ＺＰ—１０型化学灭草专用喷雾器，在草地喷洒灭生性除草剂进行整地和抚育幼林，其结果：灭草效果在９５％以上；抚育后的云杉幼林年平均高生长量是人工刀抚２８２％，落叶松是人工 刀抚１９２％；幼林保存率由１０％提高到８０％以上，并使草甸化的迹地；恢复云冷杉林的时间大大缩短，为草甸化迹地天然和人工更新提供了有效途径。
The original spruce fir forest grown in the upper cold temperate zone of Zhangguangcailing became the sub-alpine meadow grass after secondary cutting. In this study, we applied the new technology 5ZP-10 chemical weeding special sprayer to soil preparation and tending young plantation by spraying the dehumidification herbicide on the grassland. The results showed that the effect of weeding was over 95%; the annual average high growth of young spruce Artificial knife care is 282%, larch artificial knife care 192%; young forest preservation rate increased from 10% to 80%, and to make the meadows of traces; to restore the spruce forest time to shorten the time for the meadow Natural and artificial updates provide an effective way.