农业工程学报2012，Vol.28Issue(12)：122-126,5.DOI:10.3969/j.issn.1002-6819.2012.12.020
垄沟集雨对干旱半干旱区土壤水热条件及老芒麦产草量的影响
Effects of ridge and furrow rainfall harvesting system on soil hydrothermal condition and yields of Elymus sibiricus L. in arid and semiarid regions
摘要
Abstract
The study about the effects of ridge and furrow rainfall harvesting system (RFRH) on Elymus sibiricus yield was carried out in Bashang agro-pastoral region during 2009 to 2010 years. The aim was to maintain and increase perennial grassland yields. The soil hydrothermal conditions and roots biomass distribution and yield of E. sibiricus was measured. The results showed that RFRH system could improved soil hydrothermal condition, including increase of soil surface volumetric water content by 9.67%-26.94%, and the soil water storage of 30 cm depth by 13.38%-24.92%, and the soil surface daily minimum temperature, which improved soil surface roots biomass distribution, promoted yields increase by 98%-230%. Treatment of MR60 with 60cm-ridge and 30 cm-furrow had the highest yield 5.34 t/hm2. Compared with the control with the yield of 1.62 and 1.18 t/hm2 of the two year respectively, the average yield of MR60 with 5.34 and 2.79 t/hm2 of the two year increased by 230% and 136%, respectively. RFRH system could significantly increase and maintain E. sibiricus growth and yields under rainfall decreasing and erratic distribution conditions.关键词
土壤水分/温度/生物量/垄沟集雨/老芒麦Key words
soil moisture/ temperature/ biomass/ ridge and furrow rainfall harvesting system/ Elymus sibiricus分类
农业科技引用本文复制引用
何峰,王堃,李向林,徐柱..垄沟集雨对干旱半干旱区土壤水热条件及老芒麦产草量的影响[J].农业工程学报,2012,28(12):122-126,5.基金项目
"十二五"国家科技计划(2011BAD17B01) （2011BAD17B01）
国家牧草产业技术体系(CARS-35-12) （CARS-35-12）
中国农业科学院院所基金项目2012cj-9. （）
