摘要
木麻黄是热带旱生类型植物,但能适应轻盐渍土。土壤含盐量增加时,木麻黄的外部形态略有变化,体内薄壁组织,尤其是髓部增加最明显;渗透势有显著降低,含水量和含灰量有一定程度增加。在海岸沙质地上栽培的木麻黄,以坚木麻黄生长最快,抗风力最强。木麻黄迹地养分全面下降是二茬木麻黄退化的重要原因之一,导因是群众不断取出木麻黄凋落物。采用施肥补给等各种措施,在实践中已收到效果。
Casuarina equisetifolia is a tropical xerophyte species and can adapt in ighlt salinized soil.With the increase of salt content in soil, the parenehyma especially the pith cells of the C. equisetifolia increase obviously. The content of water and ash of C. equisetifolia showed marked increase, but the marked descend of the osmosis potentia. The C. glauca grows with the highest rate and is most strong in resistance to wind. The nutrient in the soil around the old trees of C. equisetifolia become very poor. This is one of the main reasons for poor growth of second generation of C. equisetifolia in the same soil.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
1990年第1期99-104,共6页
Journal of Fujian Normal University：Natural Science Edition
关键词
木麻黄
含水量
营养元素
渗透势
casuarina equisetifolia, xerophytes, osmotic potential, water content, nutritional element
