摘要
为了探究石羊河流域咸水资源的利用方式,在甘肃省石羊河流域开展了为期两年的制种玉米咸水灌溉田间试验,研究咸水灌溉条件下土壤水盐分布规律及对制种玉米产量的影响。研究结果表明:不同灌水矿化度处理,高灌水矿化度处理由于盐分胁迫严重,会改变土壤剖面水分分布规律,且这种规律会随着咸水灌溉使用时间的增长而越明显;咸水灌溉会使土壤盐分在土壤各土层累积,并且灌水矿化度越大,盐分累积量也越大,对作物产量及其构成因素的影响也越大,3g/L的咸水在短时期可以用来进行农田灌溉,盐分不会在土壤中产生大量累积,对作物产量的影响也较小,但长时期利用3g/L的微咸水进行灌溉,对土壤水盐分布及作物产量的影响,还需进一步的研究。
To obtain the suitable alternative of saline water irrigation for seed maize in Shiyang River basin, field experiments were conducted for two years to study the effects of saline water irrigation on the soil water-salt distribution and seed maize yield in Shiy- ang River basin of Gansu Province. The research results show that the treatment with high salinity of irrigation water can change the soil water distribution in soil profile because salt stress and this phenomenon are obvious as a long period of saline water irrigation in different treatments of saline water irrigation. The salt is accumulated in each soil layer under saline water irrigation. It is noticed that the greater salinity of irrigation water, the more salt accumulation amount. The treatment with high salinity of irrigation can al- so change seed maize yield and its components. The saline water irrigation with 3 g/L can be irrigated in a short period and salt is not abundantly accumulated in soil profile. It cannot affect the seed maize yield. But the saline water irrigation with 3 g/L is irrigated for in a long period, it must further study the effects on soil water-salt distribution and seed maize yield.
出处
《中国农村水利水电》
北大核心
2016年第7期1-5,10,共6页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(51179166)
高校博士点专项科研基金项目(20123250110004)
关键词
石羊河流域
咸水灌溉
土壤水盐分布
Shiyang River Basin
saline water irrigation
soil water-salt distribution
