膜下滴灌油葵光合作用及补充灌溉制度研究  

Study on photosynthesis and supplementary irrigation program of drip irrigation oil sunflower under mulch

作　　者：王怀博 唐瑞 鲍子云 杜历 

机构地区：[1]宁夏水利科学研究院,宁夏银川750021

出　　处：《黑龙江水利》2016年第10期1-5,共5页

基　　金：国家科技支撑计划项目(2011BAD29B07);宁夏科技攻关计划重大专项项目(2011ZDN04)

摘　　要：针对宁夏中部干旱带水资源短缺和生态环境恶劣的问题,该文研究补充灌溉对油葵产量和节水效果的影响。采用膜下滴灌种植模式,设置3个水平的滴灌定额,研究不同补充灌溉定额对油葵成活率、叶面积指数、光合指标及水分利用效率的差异,与微集雨条件下的油葵进行对比。研究发现,随着灌溉定额的增加,油葵的成活率提高,油葵叶片光合速率随光合有效辐射、叶片温度与空气温度之差增加而增大,反之,则蒸腾速率增大,最适宜的处理(675m^3/hm^2)产量较对照增加12.13%,较灌溉定额最大的处理(1050m^3/hm^2)节水20.46%。For the problem of water resources shortage and ecological environment degradation in middle Ningxia. This paper researched the effect of supplementary irrigation on yield and water saving of oil sunflower. Using drip irrigation under mulch cultivation model, setting three levels of drip irrigation quota, studying different supplementary irrigation quota on the survival rate of oil sunflower , leaf area index, photosynthetic indexes and the differences of water use efficiency compared with oil sunflower under the condition of micro rainwater irrigation. The study found that with the increasing of irrigation quota the survival rate were improved, photosynthetic rate added with the increasing of photosynthetically active radiation, leaf temperature and the difference of air temperature, on the contrary the transpiration rate increased, the yield of optimum treatment （675m^3/hm^2） increased by 12. 13% than control, compared with the largest irrigation quota （1050 m^3/hm^2） water-saving 20.46%.

关 键 词：宁夏中部干旱带 油葵 补充灌溉 光合速率 水分利用效率 

分 类 号：S152.7[农业科学—土壤学]