摘要
对国内外12个紫花苜蓿品种产量及土壤水分状况变化规律的研究结果表明:紫花苜蓿产量与土壤水分状况关系密切。不同品种、不同刈次产量其土壤水分状况存在差异,不同土层深度土壤水分状况也存在差异。不同刈次土壤含水量的变化趋势呈现出高—低—高的"V"字型变化,这种规律性变化与苜蓿生长发育特点、产草量、土壤水分运动及外界降水有关。西香、阿尔冈金、WL-323、WL-323Ml等引进品种能吸收深层土壤的水分,具有较强的增产潜力和抗旱能力。
The study was carried out to investigate the yield and regularity of soil water condition of 12 alfalfa cultivars. The results showed that there was a close relationship between yield of alfalfa and soil water condition. The yield and soil water condition were different among various cultivars and different harvest stages. Soil water condition also varied among different soil depth. Soil moisture content at different harvest stages showed the regularity of high-low-high which was related to the growth and yield of alfalfa, the soil water movement and the rainfall distribution. Cimmaron, Algoquin, WL-323 and WL-323ML could absorb water in deeper layers, and had higher potentiality to increase production and sharp ability of drought resistance.
出处
《干旱地区农业研究》
CSCD
北大核心
2004年第3期14-18,共5页
Agricultural Research in the Arid Areas
基金
农业部948项目"澳大利亚多年生及一年生苜蓿品种引进"(961013)
关键词
紫花苜蓿
品种
产量
土壤水分
alfalfa
yield
soil water condition
soil water storage
