| 吴之正,顾卫,许映军,林叶彬,张国明.海冰水灌溉对土壤盐分和玉米产量的影响[J].干旱地区农业研究,2010,28(5):166~170 |
| 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 |
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| DOI：10.7606/j.issn.1000-7601.2010.05.31 |
| 中文关键词: 海冰水 灌溉 盐度 玉米产量 |
| 英文关键词:sea ice water irrigation salinity corn yield |
| 基金项目: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） |
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| 中文摘要: |
| 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（450、900、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。 |
| 英文摘要: |
| 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. |
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