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不同树龄祁连圆柏幼树生长节律

Growth Rhythm of Different Ages of Sabina przewalskii
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摘要 通过对4、6、8、11年生的祁连圆柏(Sabina Przewalskii)幼树年生长节律进行研究,结果表明:各树龄祁连圆柏幼树的树高、新梢生长变化规律相同,高生长均表现为前期速生,速生期出现在5-6月,一年只出现1次高峰;粗生长始于4月下旬,结束于10月上旬,一年出现2次高峰;圆柏侧枝新梢生长一年只出现1次高峰。高生长和新梢生长最快的树龄是6年生,其次为8年生、11年生,生长最慢树龄是4年生;粗生长最快树龄是11年生,其次为8年生、6年生,生长最慢树龄是4年生。祁连圆柏幼树的生长受气温的影响很大,在气温12℃左右开始生长;气温17~22℃特别适宜祁连圆柏生长,生长很快;23~24℃气温较高不利于圆柏生长,生长较慢。
作者 刘东生 陈斌 田晓萍 滕玉风 LIU Dongsheng;CHEN Bin;TIAN Xiaoping
出处 《林业科技通讯》 2024年第9期93-95,共3页 Forest Science and Technology
基金 国家自然科学基金项目(项目编号:32060337) 甘肃林业和草原科技计划项目(项目编号:2020kj006)。
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