不同林龄中间锦鸡儿枝叶生物量与粗蛋白含量研究

以16年、25年、37年生3种不同林龄的中间锦鸡儿为研究对象,测定其枝叶生物量和粗蛋白含量,并对16年生中间锦鸡儿进行粗蛋白含量年内动态监测及不同径级枝条粗蛋白含量测定。结果表明：随着林龄的增大,中间锦鸡儿枝叶生物量呈下降趋势。3种不同林龄中间锦鸡儿枝叶粗蛋白含量以16年林龄最高。16年生中间锦鸡儿叶粗蛋白含量随生长周期的推进逐渐减小;枝粗蛋白含量的年内动态基本处于稳定趋势。中间锦鸡儿枝、叶粗蛋白含量在一年的生长周期中均较高,可作为家畜优质的灌木饲料。随着中间锦鸡儿枝径级的增加,枝条生物量显著减小,而各径级枝粗蛋白含量则随径级的增加显著增大。锦鸡儿林的发展已显示出退化的倾向,较老林龄的中间锦鸡...

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Published in广东农业科学 Vol. 41; no. 18; pp. 39 - 41
Main Author 翟德苹 杨明秀 陈林 杨新国 宋乃平
Format Journal Article
LanguageChinese
Published 宁夏大学西北退化生态系统恢复与重建教育部重点实验室/西北土地退化与生态恢复省部共建国家重点实验室培育基地/西部生态与生物资源开发联合研究中心,宁夏银川,750021 2014
Subjects
中间锦鸡儿
动态特征
粗蛋白含量
荒漠草原
动态特征
粗蛋白含量
中间锦鸡儿
荒漠草原
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ISSN1004-874X

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Summary:以16年、25年、37年生3种不同林龄的中间锦鸡儿为研究对象,测定其枝叶生物量和粗蛋白含量,并对16年生中间锦鸡儿进行粗蛋白含量年内动态监测及不同径级枝条粗蛋白含量测定。结果表明：随着林龄的增大,中间锦鸡儿枝叶生物量呈下降趋势。3种不同林龄中间锦鸡儿枝叶粗蛋白含量以16年林龄最高。16年生中间锦鸡儿叶粗蛋白含量随生长周期的推进逐渐减小;枝粗蛋白含量的年内动态基本处于稳定趋势。中间锦鸡儿枝、叶粗蛋白含量在一年的生长周期中均较高,可作为家畜优质的灌木饲料。随着中间锦鸡儿枝径级的增加,枝条生物量显著减小,而各径级枝粗蛋白含量则随径级的增加显著增大。锦鸡儿林的发展已显示出退化的倾向,较老林龄的中间锦鸡儿自我更新能力衰退。
Bibliography:44-1267/S
Taking Caragana intermedia at three different ages of 16 a, 25 a and 37 a as the main objects, biomass of branches and leaves, crude protein content of C. intermedia at three different ages were measured. Crude protein content of dynamics in one year and branches of different diameter classes at 16 a were also measured. The results showed that,biomass of branches and leaves decreased with ages increasing. Crude protein content of branches and leaves at 16 a was the highest among three different ages of C. intermedia. Leaves’ crude protein content of Caragana intermedia at 16 a decreased as time went on, dynamics of branches’ crude protein content in one year were in a stable state basically. C.intermedia had a high crude protein content of branches and leaves in the growth cycle of one year, so it could be used for shrub feed of good quality for livestock. Biomass of branches decreased as diameter classes increasing, however, crude protein content of different diameter-class branches increased signif
ISSN:1004-874X