摘要
为研究不同滴灌带铺设模式下滴灌带首尾两端水平湿润半径和垂直湿润半径随灌溉时间推移的变化规律,确定棉花滴灌灌水最优时间,选取两种滴灌带铺设模式,研究滴灌带首尾两端在灌溉开始后2、4、6、8 h内土壤湿润锋的运移情况。结果表明:一膜二带和一膜三带铺设模式湿润锋达到根系附近所需时间分别为8、6 h,首端湿润锋运移速率要比尾端湿润锋运移速率快,一膜三带湿润锋运移速率比一膜二带快;两种模式灌水量相近时,一膜三带模式更加节省时间;相比一膜二带模式,一膜三带首尾两端湿润锋的形状更相近,并且达到根系要求所花时间更接近。综合当地条件,棉花滴灌推荐使用一膜三带铺设模式,灌水延续时间为6~8 h。
In order to study the variation of horizontal and vertical wetting radii at the beginning and end of drip irrigation tapes under different drip irrigation tapes laying modes with the passage of irrigation time,and to determine the optimal time for cotton drip irrigation,this research selected two drip irrigation tapes laying modes to study the movement of soil wetting fronts at the beginning and end of drip irrigation tapes within 2,4,6 and 8 hours after the start of irrigation.The results showed that the time required for the wetting fronts to reach the vicinity of the root system in the one film two tapes and one film three tapes laying modes was 8 and 6 hours,respectively.The transport rate of the wetting fronts at the beginning was faster than that at the end,and the transport rate of the wetting fronts in the one film three tapes was faster than that in the one film two tapes laying mode.When the irrigation amount of the two modes was similar,the one film three tapes mode was more time-saving.Compared to the one film two tapes mode,the shape of the wetting fronts at the beginning and end of the one film three tapes mode was more similar,and the time required to meet the root system requirements was similar.Considering the local conditions,it is recommended to use a one film three tapes laying mode and a 6-8 h irrigation duration for cotton drip irrigation.
作者
卡地尔江·米吉提
依沙克·托合提
阿布都卡依木·阿布力米提
高元勇
杨昕馨
希丽娜依·多来提
KADIERJIANG Mijiti;YISHAKE Tuoheti;ABUDOUKAYIMU Abulimiti;GAO Yuanyong;YANG Xinxin;XILINAYI Duolaiti(Xinjiang Vocational University,Urumqi,Xinjiang830013,China;Shaya County Water Management Station,Shaya,Xinjiang 842200,China;Xinjiang Zhongnong Zhishui Technology Company Limited,Changji,Xinjiang 831100,China)
出处
《天津农业科学》
2024年第12期44-49,共6页
Tianjin Agricultural Sciences
基金
新疆科技发展计划项目(2022LQ04001)
扬州市重点研发计划(产业前瞻与关键核心技术)项目(YZ2023004)
江苏省科技计划专项资金(重点研发计划现代农业)项目(BE2023340)。
关键词
棉花
滴灌带
湿润锋
水分运移
cotton
drip irrigation tapes
wetting fronts
water transport
作者简介
卡地尔江·米吉提(1985-),男,新疆伽师人,讲师,硕士,主要从事水资源高效利用技术与理论研究;通讯作者:阿布都卡依木·阿布力米提(1990-),男,新疆叶城人,高级工程师,硕士,主要从事灌溉自动化理论和技术研究。
