摘要
采用定点调查和普查相结合的方法对云南省种羊场白三叶种子生产试验基地的杂草进行调查。结果表明:该基地计有28个科、66种杂草,其中以菊科和禾本科最多;多年生杂草比一年生杂草多;杂草多样性指数、均匀性指数和优势集中性指数均从1月开始逐渐上升,9月达到最大,然后开始呈下降趋势;12月的各指数值与1月相近。
An integrated general and fixed position investigation of weeds was conducted in the Yunnan area, and more particularly, in the white clover seed production field of the Yunan Provincial Sheep Farm. Results show that there are 66 weed species of 28 families, mainly Compositae and Gramineae, found in the seed production field. More of the weeds are perennials. The trend of change of species richness, indices of weed diversity, evenness, and dominant concentration rises from January till it reaches the peak in September, then falls to the downhill in December, to the same level as in January.
出处
《草地学报》
CAS
CSCD
2006年第4期370-372,共3页
Acta Agrestia Sinica
基金
云南省省校科技合作项目(2003FCBFE00A002)
关键词
云南
白三叶
种子田
杂草
Yunnan province
White clover
Seed field
Weed
