留萌株数对尾巨桉萌芽更新效果的影响  

Effect of Number of Coppice Sprouts on the Regeneration of Eucalyptus urophylla × E. grandis Plantations

作　　者：曾瑞生 ZENG Ruisheng(Tianma State-owned Forest Farm,Pinghe 363704,Fujian,China)

机构地区：[1]福建省平和天马国有林场,福建平和363704

出　　处：《桉树科技》2023年第4期53-57,共5页Eucalypt Science & Technology

摘　　要：开展尾巨桉采伐迹地萌芽更新选留萌芽条株数试验,为培育速生丰产优质高效尾巨桉萌芽林提供参考。分析7年生尾巨桉萌芽林的生长量和经济效益,结果表明:留萌时植株个体大小与成林时的单株立木材积成正比,留萌芽条株数为2株时可获得最大产值和利润率。尾巨桉萌芽林培育以选留萌芽条有效株数1755~2025株·hm^(−2)较为合理,林木分化不太明显且产量最高,适合在造林实践中推广。In order to cultivate fast-growing,high-yield,high-quality and efficient Eucalyptus urophylla×E.grandis coppice plantations,an experiment was conducted on the number of coppice sprouts per stump.From the data obtained,the growth and economic benefits of a 7-year-old E.urophylla×E.grandis coppice plantation were studied and analyzed.The results showed that the individual size of the stems was proportional to the volume of standing trees,and the maximum output value and profit rate could be obtained when the number of sprouts per stump was 2.It proved reasonable to select the effective number of stems per hectare at 1755~2025 for the cultivation of E.urophylla×E.grandis coppice plantations.The stand differentiation of retaining the above number of stems was not obvious,the yield was the highest and the economic benefit was maximized,which was suitable for promotion in afforestation practice.

关 键 词：尾巨桉 采伐迹地 萌芽更新 生长量 经济效益 

分 类 号：S751.3[农业科学—森林经理学]