摘要
使用(微)咸水进行农业灌溉可以有效缓解干旱半干旱地区淡水资源紧缺的问题,适宜矿化度水源灌溉棉田可以保证作物产量。为探明不同矿化度水质对棉花生长的影响,开展测坑试验,设置1 g/L、2 g/L、3 g/L、4 g/L、5 g/L、6 g/L等6个不同矿化度灌溉水源情景,分析其棉花株高、茎粗、叶面积指数、叶绿素及产量的影响。结果表明:灌溉水矿化度<4 g/L时,会对棉花株高、茎粗、叶面积和叶绿素含量有积极的促进作用;当灌溉水矿化度>4 g/L时,棉花的生长发育受到不同程度的抑制;当矿化度为4g/L时,产量也高出淡水处理0.02%,因此使用(微)咸水作为棉花的灌溉水源时,矿化度不宜高于4 g/L。
The use of(slightly)brackish water for agricultural irrigation can effectively alleviate the shortage of fresh water resources in arid and semi-arid areas.Irrigating cotton fields with suitable salinity water source can ensure crop yield.In order to explore the influence of water quality with different salinity on cotton growth,pit test was carried out,and 6 irrigation water source scenarios with different salinity were set,including 1 g/L,2 g/L,3 g/L,4 g/L,5 g/L and 6 g/L,to analyze the influences of cotton plant height,stem diameter,leaf area index,chlorophyll and yield.The results showed that when the salinity of irrigation water was less than 4 g/L,the plant height,stem diameter,leaf area and chlorophyll content of cotton were positively promoted.When the salinity of irrigation water was higher than 4 g/L,the growth and development of cotton were inhibited in different degrees.At the same time,when the salinity is 4 g/L,the yield is 0.02% higher than that of the fresh water treatment.Therefore,the salinity should not be higher than 4 g/L when the salt water is used as the irrigation source of cotton.
作者
花永辉
刘洪波
Hua Yonghui;Liu Hongbo(Xinjiang Research Institute of Water Resources and Hydropower,Urumqi 830049,Xinjiang)
出处
《陕西水利》
2023年第3期70-72,共3页
Shaanxi Water Resources
基金
自治区公益性科研院所基本科研业务经费资助项目(KY2022127)。
关键词
矿化度
微咸水
灌溉
棉花
生长发育
Salinity degree
slightly brackish water
irrigation
cotton
growth and development
