榆林沙漠（毛乌素沙漠）灌木的动态营养.docVIP

榆林六种沙生植物不同生长期常规营养分析 摘要:本文对榆林毛乌素沙漠六种沙生植物:沙柳、柠条、花棒、踏郎、紫穗槐、沙蒿不同生育期叶主要化学成分进行了分析，以确定其营养规律，结果表明：六种沙生植物粗蛋白质含量都有随生长季节不断下降的趋势。同期比较，柠条、紫穗槐的粗蛋白质较高，沙蒿较低；沙柳、花棒、踏郎的粗蛋白质含量最低。粗纤维含量，六种沙生植物都有随生长季节不断上升的趋势,其中花棒在最后一次采样分析中最高；踏郎、 柠条次之；沙蒿最低。粗脂肪含量，紫穗槐、花棒呈下降----上升趋势，其峰值都出现在第一次采样(07.6.13)分析中；沙柳、踏郎都有随生长季节不断下降的趋势；柠条呈上升----下降趋势；沙蒿在四次采样分析中无明显变化。粗灰分含量，沙蒿、柠条、踏郎呈上升----下降趋势，其中沙蒿，柠条，踏郎的峰值出现在第三次采样分析(07.9.9)中，紫穗槐、花棒呈下降----上升趋势，其中花棒峰值出现在最后一次采样分析(07.10.10)；沙柳呈上升趋势。无氮浸出物含量，沙蒿、紫穗槐呈上升趋势；沙柳、花棒呈上升----下降趋势；柠条、踏郎呈下降----上升趋势。 关键词： 沙生植物 常规营养 粗蛋白质 粗纤维 Conventional Nutritional Analysis of Six Psammophyte in Different Growing Seasons in YuLin Abstract: In order to discover their nutrition, this paper analyzes the chemical ingredient of six psammothytes in YuLin, including Caragana korshinskill、Artemisia sphaerocephala、Hedysarum scoparium、Salix cheilophila、Amorpha fraticosa and Astragalus mongolicum, was unylisized dynamically . The resluts showed: The six psammothytes’s crude protein content is declining with their growing seasons. Crude protein of Caragana korshinskill and Amorpha fraticosa are the highest in the same growing period , Artemisia sphaerocephala is lower, and Salix cheilophila 、Astragalus mongolicum、 Hedysarum scoparium are the lowest among them. The six psammothytes’s crude fiber content is growing with their growing seasons. In the last sampling, the crude fiber content of Hedysarum scoparium is the highest ; Artemisia sphaerocephala is the lowest and Astragalus mongolicum 、Caragana korshinskill are lower among them. The crude fat of the six psammothytes, Amorpha fraticosa and Hedysarum scoparium are decreased-upward, their peaks appear in the first sampking(07.06.13). The trend of the Salix cheilophila and Astragalus mongolicum are decreasing with their growing seasons; the trend of crude fat of Caragana korshinskill is upward-decreased; Artemisia sphaerocephala’s content is on significant changes in four sampling times. Their crude ash content trend is that: Artemisia sphaerocephala、Caragana k