海冰水灌溉对土壤盐分和玉米产量的影响  

Effect of irrigation with sea ice water on soil salinity and corn yield

作　　者：吴之正[1] 顾卫[1] 许映军[1] 林叶彬[1] 张国明[2] 

机构地区：[1]地表过程与资源生态国家重点实验室,北京100875 [2]北京师范大学地理学与遥感科学学院,北京100875

出　　处：《干旱地区农业研究》2010年第5期166-170,共5页Agricultural Research in the Arid Areas

基　　金：国家863计划重点项目课题(2006AA100206);国家自然科学基金项目(40801230;40335048;30870467);国家科技支撑计划重大项目课题(2006BAB03A03)

摘　　要：渤海海冰盐度一般在4~11 g/kg之间,经处理可以作为农业灌溉用水。采用不同盐度（1、3、5 g/kg）,不同灌溉水量（4509、00、1 350 m3/hm2）的海冰水进行农田微区试验。结果表明：（1）灌溉处理的试验终期的土壤盐度没有显著的增加,在降水的淋溶下可以保持在较低水平;在第二年返盐高峰时土壤盐分也保持在较低水平。（2）玉米籽粒产量随灌溉海冰水的盐度增加而轻微下降,在低盐度（1 g/kg）的处理时,随灌溉水量的增加而增加,在高盐度（3、5 g/kg）时则相反。玉米秆的产量也呈现出和籽粒相似的规律。The salinity of Bohai sea ice is usually 4 to 11 g/kg and sea ice can be used for irrigation after desalination.Farmland experiment was carried out with different irrigation water salinity（1 g/kg,3 g/kg and 5 g/kg） and different irrigation water quantity（450 m3/hm2,900 m3/hm2,1 350 m3/hm2）.The results showed that（1） At the end of the experiment,the soil salinity of 10 disposals didn＇t increase remarkably on account of the washing and leaching of precipitation;and the soil salinity was also maintained at a lower level in the second year of salt return peak.（2） The corn yield dropped lightly with the increasing of the irrigation salinity.When the irrigation water salinity was 1 g/kg,the corn yield would increase along with the increasing irrigation water quantity.When the irrigation water salinity was 3 g/kg or 5 g/kg,the corn yield would decrease along with the increasing irrigation water quantity.The corn stalk yet showed the similar law.

关 键 词：海冰水 灌溉 盐度 玉米产量 

分 类 号：S274[农业科学—农业水土工程]