草业科学2009，Vol.26Issue(7)：66-71,6.
沙地一年生植物五星蒿的构件特征研究
The modular characteristic of the annual psammophilous Bassia dasyphylla
摘要
Abstract
The experiment was conducted on the morphological and biomass spatial distribution characters of the annual psammophilous Bassia dasyphylla in Minshazui of Gulang County in Gansu. The results showed that the crown, ground diameter, root depth, root range, lateral root number and length all had very significant linear positive correlations with plant height(P＜0.01) , the degree of correlations between aboveground morphological index and height was higher than the underground. The tress had more ramification, the number of first order ramification was 30.40, the secondary ramification reached 260.87. The average single biomass of B. dasyphylla was 74.21 g, the aboveground part was 67.83 g, and the underground part was 7.38 g.The aboveground biomass concentrated in 10~30 cm, this layer occupied 77.64% of aboveground part, the components according with the size of biomass in order as tress, fruit, leaf. The underground part biomass concentrated in 0~10 cm, this layer occupied 76.29% of underground part, and lateral root was more developed than main root. Differences of fresh and dry biomass of components in different layers were basically similar, the differences of 10~20 cm and 20~30 cm compared with 30~40 cm and 40~50 cm of aboveground were significant, the differences of 0~10 cm compared with 10~20 cm and 20~30 cm of underground were significant, however, there was no significant difference in other different layers.关键词
五星蒿/构件/形态特征/生物量/空间分布格局Key words
Bassia dasyphylla/ components/ morphological characteristic/ biomass/ spatial distribution pattern分类
农业科技引用本文复制引用
李亚,陈芳,马全林,张德魁,刘有军..沙地一年生植物五星蒿的构件特征研究[J].草业科学,2009,26(7):66-71,6.基金项目
甘肃省自然科学基金资助项目(3ZS041-A25-015) （3ZS041-A25-015）
