机构地区: 宁夏大学资源环境学院
出 处: 《水土保持通报》 2009年第2期150-154,共5页
摘 要: 采用随机区组试验设计,研究了不同灌溉量对紫花苜蓿生长特性和生物量的影响,阐明了水分状况与苜蓿生长特性的关系。(1)在苜蓿整个生育期中,各处理的叶面积从分枝期到盛花期变化趋势基本相同,都是先升后降;不同灌溉量对茎叶比产生的作用不明显;不同生育期苜蓿的植株高度随灌溉量的增加而增高。(2)现蕾期前后是苜蓿鲜生物量形成的关键时期。因此在现蕾期进行合理灌溉,对苜蓿叶面积、植株高度和产量的提高具有较大影响。 The objective of this study was to ascertain the best irrigation methods through researching the effects of different irrigation on alfalfa biological characteristics and biomass by a randomized block experiment. The main conclusions were as follows;(1) The leaf area of alfalfa increased from branching period to full flowering period;Irrigation quantity increased shoot/leaf ratio unremarkablys The bigger height of alfalfa appeared at higher irrigation quantity.(2) Budding period is the key stage affecting f...
领 域: [农业科学]