| 翟德苹，杨明秀，陈林，杨新国，宋乃平.不同林龄中间锦鸡儿枝叶生物量与粗蛋白含量研究[J].广东农业科学,2013,40(8):39-41 |
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不同林龄中间锦鸡儿枝叶生物量与粗蛋白含量研究 |
| Research on biomass of branches and leaves，crude protein content of Caragana intermedia at different ages |
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| DOI： |
| 中文关键词: 荒漠草原 中间锦鸡儿 粗蛋白含量 动态特征 |
| 英文关键词: desert steppe Caragana intermedia crude protein content dynamic characteristics |
| 基金项目:国家“973”计划项目（2012CB723206）；宁夏自然科学基金（NZ14006） |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| Taking Caragana intermedia at three different ages of 16a, 25a and 37a 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 16a were also measured. The results showed that,biomass of branches and leaves decreased with ages increasing. Crude protein content of branches and leaves at 16a was the highest among three different ages of C. intermedia. Leaves爷crude protein content of Caragana intermedia at 16a decreased as time went on, dynamics of branches爷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 significantly with the increase of diameter classes. The development of C. intermedia showed a trend of degradation, the ability of self-renewal of C. intermedia at older ages declined. |
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