摘要
研究了小叶锦鸡儿（Caragana microphylla）人工灌丛不同生育期、不同生长年限及不同器官的营养特征。研究结果表明：小叶锦鸡儿枝条和叶片营养丰富．枝条在开花期粗蛋白含量达到19．61％．嫩叶的粗蛋白古量高达27．50％，粗纤维含量仅为12．3％。枝条和叶片的矿质养分含量高且比例合理．Ca／P为1．7：1～2．1：1．接近家畜日粮中Ca／P最佳比例2：1，是优质的灌木饲料。从休眠期到开花期．小叶锦鸡儿的营养元素含量呈上升趋势．以后逐步降低，花期是最佳利用季节。随着小叶锦鸡儿生长年限的延长，各种营养成分逐渐减少．从生态学的角度分析，平茬后第3年是小叶锦鸡儿最佳的利用时间。小叶锦鸡儿枝条氨基酸总量在6．0％左右．高于玉米秸秆饲料，而且维生素含量丰富．是优质的家畜饲料和北方生态建设的优质树种。
The experiment were conducted to study the nutrient characteristics of roots, shoots, leaves, seeds of Caraganna rnicrophyllai in different growth stages and ages. The results showed that Caraganna microphylla had high content in nutrient. The content of crude protein in shoots and young leaves were 19.61% and 27.5% at blooming stage. There were high valuable mineral nutrients content in whose components were reasonable in shoot and leaves. Ca/P =- 1.7 ： 1 ～ 2.1 ： 1, being equal to the optimum ratio of livestock feed. Element nutrient in Caraganna microphylla raised from dormancy period to blooming period then declined afterward in one year. The blooming period was the best season for Caraganna microphylla to be utilized. The nutrient contents decreased when Caraganna microphylla got older. It was valuable plants in ecological environment construction of northwest part of China.
出处
《水土保持学报》
CSCD
北大核心
2006年第3期66-69,共4页
Journal of Soil and Water Conservation
基金
农业部"948"项目"北方干旱半干旱风沙型盐碱区生态建设关键技术引进"(Z2004-32)
关键词
小叶锦鸡儿
黄土丘陵
营养特征
矿质元素
Caragana microphylla
Loess Plateau
nutrient content
mineral elements
