人工栽培野生草坪植物三点金成坪速度与生长特征的研究

The Research on Growth Rate and Growth Characteristics of Artificial Cultivation of Wild Leguminous Plant Desmodium tiflourum(L.)DC

人工栽培野生豆科草坪植物三点金成坪速度及其生长特征的研究结果表明,在不同季度建植的三点金草坪成坪速度差异极显著,其中夏季生长速度最快,春季次之,秋季最慢;用不同基质建植的三点金草坪成坪速度差异不显著;不同繁殖方法建植的三点金草坪成坪速度差异也不显著。三点金的成坪生长期分为:初生期、速生期、缓慢生长期3个阶段,成坪周期(时间)的长短取决于定植成活的初始盖度及成坪速度。三点金定植成活的初始盖度达40%左右时,夏季在广东地区1个月内即可成坪。研究中提出草坪日均成坪速度以盖度日均增长量来表达及草坪建植成活初始盖度是决定成坪周期(时间)的一个重要因素的观点。

The research on growth rate and growth characteristics of artificial cultivation of wild leguminous plant Desmodium tiflourum （ L ） DC showed that： It was extremely significant that the growth rate of Desmodium tiflourum（ L ）DC varies with seasons, summer was the opti- mum season, followed by spring, whereas autumn was the slowest; However, neither different matrix nor plant breeding method played a sig- nificant role in the growth rate of Desmodium tiflourum（ L. ）DE. The growing period of Desmodium tiflourum（ L ）DC was divided into three phases： newborn period, fast-growing period and the slow growth period, and the size of growing cycle （time）depends on the survival of the in- itial coverage and growth rate. For the Colonization survived, the initial cover can be up to 40% or so, only one month the turf can be formed in summer Guangdong region. The research put forward that the growth rate of lawn was represented by daily coverage density increase, and the growth rate was determined by the initial coverage density of the lawn.