Effect of Regeneration After Girdling on Tree Growth in Eucommia ulmoides  

杜仲剥皮再生对生长的影响(英文)

作　　者：崔克明[1] 李正理[1] 

机构地区：[1]北京大学生命科学学院,北京100871

出　　处：《Acta Botanica Sinica》2000年第11期1115-1121,共7页Acta Botanica Sinica（植物学报：英文版）

基　　金：heNationalNaturalScienceFoundationofChina ( 39570 583and !39770 0 4 8) ;DoctoralProgramFoundationofInstitutionofHigherEducati

摘　　要：Annual trunk diameters and tree heights were measured in July after initial_girdling and regirdling in Eucommia ulmoides Oliv. And the percentages of fallen leaves in all leaves and burst buds in all buds were estimated respectively on every autumn or spring. The results indicated that although the tree growth slowed down in the first year after girdling, but in the second year after girdling, the growth of the girdled trees tended to become normalized and up to the third year, it was similar to that of the normal trees. According to its developmental trait after girdling, the authors suggested that optimal girdling of the trees is in every 4 or 5 year intervals. With this method it was able to improve bark production and to protect the resource from extinction as well.杜仲 (EucommiaulmoidesOliv .)剥皮后每年 7月测定剥皮株和对照株的径向与高度生长量 ,每年秋季观测这些树的落叶情况 ,春季观测其萌芽情况 ,连续观察 4年。同时对剥皮 3年后在原剥皮部位作第二次剥皮的植株作了同样的 3年观测。结果表明 ,剥皮当年树的落叶提前、发芽推迟 ,高度和树粗的生长明显减慢 ,剥皮后第二年其各方面的生长状况与对照株接近 ,第三年剥皮株的生长与对照株相似 ,但剥皮株的木材年生长量从第一年起就明显大于对照株 ,这可能是由于剥皮刺激使处于第一被动休眠期的形成层恢复活动所致。第二次剥皮株的生长情况与第一次剥皮株基本相同。据此 ,建议 4年或 5年剥一次较为合适。应用此项技术不仅可提高树皮产量 ,而且可保护杜仲资源。

关 键 词：Eucommia ulmoides GIRDLING REGENERATION growth\ 

分 类 号：S567.19[农业科学—中草药栽培]