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中国农学通报 ›› 2018, Vol. 34 ›› Issue (35): 135-142.doi: 10.11924/j.issn.1000-6850.casb17080089

• 工程 机械 水利 装备 • 上一篇    下一篇

紫花苜蓿田间滴灌毛管布置优化研究

刘洪波,白云岗,张江辉,曹彪   

  1. 新疆水利水电科学研究院,新疆水利水电科学研究院,新疆水利水电科学研究院,新疆水利水电科学研究院
  • 收稿日期:2017-08-21 修回日期:2018-11-20 接受日期:2018-04-25 出版日期:2018-12-16 发布日期:2018-12-16
  • 通讯作者: 白云岗
  • 基金资助:
    水利部技术示范项目“新疆牧区饲草高效节水技术集成与示范”(SF-201733)。

:水利部技术示范项目“新疆牧区饲草高效节水技术集成与示范”(SF-201733)。

  • Received:2017-08-21 Revised:2018-11-20 Accepted:2018-04-25 Online:2018-12-16 Published:2018-12-16

摘要: 【研究目的】为了进行苜蓿浅埋滴灌技术的推广与示范,确定出适宜的苜蓿优质高产的浅埋滴灌布置方式,通过建立数学模型,利用Hydrus-2D软件模拟田间毛管不同埋深和不同间距下的水分入渗特征,采用大田试验进行验证,与模拟结果进行对比分析。结果表明:HYDRUS-2D模拟结果可靠,可用于模拟苜蓿地下滴灌土壤水分运移规律,鉴于埋深5 cm和埋深20 cm时,间距为60 cm时能获得较优产量,且产量相差不大,且由于埋深为5 cm时更容易进行浅埋作业,建议在该地区采用地下滴灌埋深为5 cm,毛管间距为60 cm的布置方式。

Abstract: The paper aims to promote and demonstrate the shallow subsurface drip irrigation of alfalfa, and optimize its scheme for alfalfa production with superior quality and high yield. We established a mathematical model, simulated the infiltration characteristics under different buried depths and separation distances of underground drip irrigation in field by using the HYDRUS-2D model, and conducted the field experiment for verification and comparative analysis of the simulation results. The results showed that: the numerical simulation with HYDRUS- 2D was reliable, and it was a suitable method to simulate the soil moisture movement in alfalfa field; higher yield was obtained with buried depth of 5 cm and 20 cm, and separation distance of 60 cm. As the yield is similar between the buried depth of 5 cm and 20 cm, and subsurface drip irrigation is easy to be conducted with the depth of 5 cm, it is suggested that the layout of buried depth of 5 cm and separation distance of 60 cm should be taken in this area.