草业学报Issue(4)：213-219,7.DOI:10.11686/cyxb20140426
土壤水分胁迫对新疆大叶苜蓿的生长及生物量的影响
The effect of water stress on growth and biomass of Medicagosativa cv.Xinjiangdaye
罗永忠 1李广1
作者信息
- 1. 甘肃农业大学林学院，甘肃 兰州730070
- 折叠
摘要
Abstract
The effects of growth and biomass accumulation under different soil water stress (90%of field capac-ity,70%,40%,20%)on Medicago sativa cv.Xinjiangdaye were studied in the pot method.The results showed that height,diameter,number of branches and lateral roots were higher than other treatments,fresh biomass and dry biomass of leaves,stems,root were the largest.When soil moisture content was 70%of field capacity and it was the most fitted for the growth of M. sativa cv.Xinjiangdaye.It was not conductive to the formation of M. sativa cv.Xinjiangdaye biomass when the soil moisture content is too high (90% of field ca-pacity)or too low (20%,40% of field capacity).Soil moisture stress inhibited growth of M. sativa cv.Xin-jiangdaye.Height and diameter growth rates were slowed with water stress intensification.The results helped to understand the response of M. sativa cv.Xinjiangdaye to water stress and provided a theoretical basis for the spreading and cultivation of M. sativa cv.Xinjiangdaye under water-saving irrigation in the arid zone agricul-ture as well as establishing lasting,stable and high-yielding grassland production system.关键词
新疆大叶苜蓿/土壤水分胁迫/生长/生物量Key words
Medicago sativa cv.Xinjiangdaye/water stress/growth/biomass分类
农业科技引用本文复制引用
罗永忠,李广..土壤水分胁迫对新疆大叶苜蓿的生长及生物量的影响[J].草业学报,2014,(4):213-219,7.
