作　　者： ;

机构地区： 台州师范专科学校生物化学系

出　　处： 《台州师专学报》 2000年第3期69-72,共4页

摘　　要： 本文较系统地研究了退化羊草草原上金狗尾草的季节生长动态及其与8种土壤因子的关系,结果表明:金狗尾草在整个生长季节中,其生长主要集中在7～8月,生物量增幅为40.74·g·m^(-2),最大值为90.54g·m^(-2)(8月),土壤pH值、电导率、速效钾和水解氮对金狗尾草生长的影响较小,而土壤含水量、温度、有效磷和土壤活性有机质对其影响较大,是金狗尾草生长的主控因子。 The dynamic status of S. lutescens' growth and the relationship with 8 soil factors were systematically studiedon degenerative grassland. The results show that S. lutescens grows best from Jult to August, its biomass'gowth range is40.74·g·m～(-2), and its biggest biomass is 90.54 g·m～(-2) in August. The effect of soil pH, electric conduct rate, available Kand hydrolytic N on S. lutescens' growth is rather small; the effect of soil water conent, temperature, available P and activeorganic matter on S. lutescens' growth is rather great, which is chief effective factor of S. lutescens' growth.

关 键 词： 退化羊草草原 金狗尾草的生长 土壤因子

领　　域： [农业科学] [农业科学] [农业科学]