摘要
对2003-2005年人工牧草草地不同深度不同时间灌水前后的水分变化特征进行研究,发现0-40 cm含水率变化大而且快称多变层;40-80 cm牧草水分利用层,80-100 cm稳定贮水层。分析美国大叶、德国大叶、沙打旺、红豆草生长状况,在相同气候和管理条件下美国大叶单株鲜重最大。用土壤水分平衡法估算美国大叶、沙打旺两种牧草的全年耗水量和土壤水分贡献系数,结果表明,在干旱缺水地区种植美国大叶是发展草产业的较好品种。
. Using the forage grass experimental materials from 2003 to 2005, the article analysis the moisture changeable quick mois characteristics of different depth and time, before and after ture consent changeable level; the moisture using level and ence environmen and accumulated condition, Under tal factors to lawn moistur temperature. Analysising e, fi the irrigation. stable wa The result was ter storage level. divided big and The big influ- rst was filed accumulated temperature, second was precipitation Meiguodaye, Deguodaye, Shadawang and Hongdoucao＇s growth the same climate and management condition, Meiguodaye grow quick and fresh weight were many. With soil moisture zero-method simulating Meiguodaye and Shadawang＇s year water consumption and soil water contribution coefficient,the result was planting Meiguodaye was more save water than planting wheat and corn in drought region. It was also first choice variety in grass industry.
出处
《草原与草坪》
CAS
2009年第2期62-67,共6页
Grassland and Turf
基金
国家科技公益项目"西北地区旱作农业对气候变暖的响应特征及其预警和应对技术研究"(项目编号:CYHY200803021)
兰州区域气象中心开放试验室(Lab2002-4)资助
关键词
灌溉地牧草
水分损耗
贡献系数
fills the membrance forage grass
the moisture content consumes
contribution coefficient
