[1]张锦春,纪永福,王芳林,等.民勤退化人工梭梭种群雨养恢复试验研究[J].西北林学院学报,2010,25(01):77-81.
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民勤退化人工梭梭种群雨养恢复试验研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第25卷
期数:
2010年01期
页码:
77-81
栏目:
林木遗传育种与森林栽培
出版日期:
2010-01-30

文章信息/Info

作者:
张锦春;纪永福;王芳林;陈芳;王基金;王功时;曹虎;
甘肃省荒漠化防治重点实验室甘肃省治沙研究所;天祝县林业局;民勤县林业技术推广站;武威市林业科学研究所;
关键词:
民勤梭梭种群雨养恢复矮化平茬结皮改造
摘要:
通过对民勤人工梭梭种群更新、平茬矮化和林地结皮改造试验,探讨梭梭种群雨养恢复关键技术措施。结果表明:民勤人工梭梭种群以半固定沙丘、沙地上更新较好,更新苗平均密度为1 130~2 280株.hm-2,但当年生幼苗保存率低,为20.6%~53.3%,这主要受降水和风蚀环境的限制;人工梭梭全平茬处理明显促进了梭梭枝条生长和萌发,平茬后当年高生长量平均58.9 cm,新枝平均长度27.0 cm,二次枝萌发数平均16.9个,分别为半平茬梭梭的1.1倍、1.6倍和1.3倍;梭梭林地结皮的穴状破坏加速了降水水分入渗过程,降水入渗深度可达70 cm,结皮带状和片状处理对降水产生一定的截留,降水在50~70 cm之间入渗。

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备注/Memo

备注/Memo:
国家“十一五”科技支撑计划项目(2007BAD46B02);;
更新日期/Last Update: 2010-02-20