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【目的】探索提高未成林造林地抚育质量、促进再造森林快速生长的有效途径。【方法】以江西省永新县七溪岭林场采伐迹地再造后的未成林造林地为研究对象,以传统的全刈抚育为对照,研究78.8%和88.8%草甘膦胺盐可溶性除草剂化学除草抚育后,未成林造林地植被物种组成的变化情况。【结果】传统的全刈抚育后,未成林造林地植被物种组成未发生明显变化,主要植被仍为五节芒和芒萁。化学除草抚育后,未成林造林地非经营目的植被种类和群落结构发生了变化,多数杂草和灌木的权重发生了根本改变,高大、严重危害目的树种生长的植被(如五节芒、芒、箬竹等)被矮小、对目的树种生长影响较小的植被(如野茼蒿、藿香、苦菜、鼠曲草、委陵菜等)取代,林地生产力得到恢复。【结论】化学除草抚育可改变非经营目的植被群落结构,改善未成林造林地土壤肥力状况,提高林地生产潜力,实现未成林抚育效益的最大化。
【Objective】 Explore the effective ways to improve the quality of tending in non-forestation afforestation and promote the rapid growth of reforestation. 【Method】 The study was conducted on unforested lands after the reforestation of the cutting sites in Qixiling Mountains Forest Farm, Yongxin County, Jiangxi Province. Compared with the traditional whole-mowing and tending treatments, 78.8% and 88.8% of the glyphosate- After the weeding and tending, the composition of vegetation species in the non-forestation afforestation changed. 【Result】 The results showed that there was no obvious change in the species composition of the vegetation in the non-forestation area after the traditional mowing and tending, and the main vegetation was still five-mulberry and mangosteen. After chemical weeding and tending, the types of vegetation and community structure of non-forestry afforestation land for non-forestation have changed. The weights of most weeds and shrubs have undergone fundamental changes. The vegetation that is tall and seriously endangered the growth of tree species of interest (eg, Bamboo, etc.) are short, the growth of the purpose of the tree species less affected by vegetation (such as Artemisia annua, Agastache, bitter herbs, mouse grass, Potentilla, etc.) replaced woodland productivity restored. 【Conclusion】 Chemical weeding and tending can change the structure of non-commercial vegetation communities, improve the soil fertility in unforested lands, increase the productive potential of forest lands and maximize the benefits of unfunded forestry.