摘要
贵州灌丛草地中常见的几种主要灌木为火棘、贵州金丝桃和小果蔷薇,草本类牧草主要是以中禾草为主的可食草类。其地上可被山羊采食部份的粗蛋白质、粗脂肪和粗灰分含量均随植物体的生育阶段增加呈线性下降;粗纤维含量则呈线性上升;无氮浸出物含量则在开花结实前后最高。季节性规律为:粗蛋白质、粗脂肪和粗灰分在春季高、夏季低,秋季又有所回升,冬季又逐渐下降;粗纤维夏季明显高于其它季节;无氮浸出物含量在秋末冬初最高。
The major shrubs in Guizhou Srass-heath are Pyracantha Fortuneana、Hypercum Rouytcheouense、Rosa Gymosa,and other grasses. The crude-protein,crude-fat and ash contents of the abovegrouna parts of these plants and their increased with grouth stage proceeding and their ADF.appears a linear rise. Their N-free extract is maximum at blooming-fruiting stage. Crude-protein、crude-fat and ash contents rise in Spring , de-crease in Summer. rise again in autumn, and finally decrease in Winter. ADF is higher in Summer than in another season. N-free extract is maximum in late autumn and early Winter
出处
《中国草地》
CSCD
1994年第4期54-58,共5页
Grassland of China
基金
贵州省自然科学基金
关键词
灌丛草地
灌木
中禾草
营养成分
Grass-heath Shrub Middle-grass Nutritive composition