排灌机械工程学报Issue(5)：448-455,8.DOI:10.3969/j.issn.1674-8530.13.0070
咸水灌溉对覆膜棉花生长与水分利用的影响
Effects of irrigation with saline water on growth and water use efficiency of film-mulched cotton plant
摘要
Abstract
In order to reveal the characteristics in growth and development of a cotton plant for re-sponse to irrigation with saline water,effects of water salinity on germination,plant height,leaf area, number of fruit branches,aboveground biomass,yield,water consumption and water use efficiency etc were studied for cotton plants by means of small-scale field trial.The results showed that germination rate and qualified seedling rate decreased with increasing salinity of water,and there is statistical sig-nificance between the 5 and 7 g/L total dissolved solid (TDS ) salinity treatments and the control group,but not for 3 g/L TDS treatment.In the case of whole gap filling through transplanting plants, the saline water exhibited an inhibitory effect on the morphological indices of growth and development of cotton plants,and the higher the water salinity,the stronger the effect.Particularly,the plant height,leaf area and aboveground biomass were affected most significantly by the salinity in bud stage,but gradually less influenced after boll stage.Additionally,the number of fruit branches and boll growth were decreasingly affected with growth of cotton plants.There was no statistical significance in the water consumption among various treatments.The cotton seed yield and water use efficiency were decreased gradually in 3 ,1 ,5 ,7 g/L treatments,among which there is statistical significance between the 7 g/L treatment and the control group.Compared with the initial salt content in 0-40 cm soil la-yer,after the irrigation trails the salt content in the soil layer remained unchanged in 1 g/L and 3 g/L treatments,but was increased in 5 and 7 g/L treatments.These results can provide an important refer-ence for productive use of saline water.关键词
棉花/咸水灌溉/矿化度/生长/水分利用率Key words
cotton/saline water irrigation/salinity/growth/water use efficiency分类
农业科技引用本文复制引用
张俊鹏,冯棣,曹彩云,孙景生,孙池涛,郑春莲,刘浩..咸水灌溉对覆膜棉花生长与水分利用的影响[J].排灌机械工程学报,2014,(5):448-455,8.基金项目
国家自然科学基金资助项目（51179193）；现代农业棉花产业技术体系建设专项资金资助项目（CARS-18-19）；公益性行业（农业）科研专项经费资助项目 （）
