Simplified method for estimating the optimal cut-off time of closed-end border irrigation*,Irrigation and Drainage

当前位置： X-MOL 学术 › Irrig. Drain. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Simplified method for estimating the optimal cut-off time of closed-end border irrigation*
Irrigation and Drainage ( IF 1.9 ) Pub Date : 2020-11-23 , DOI: 10.1002/ird.2554
Wei‐Bo Nie ₁ , Yi‐Bo Li ₁ , Xiao‐Yi Ma _{2,

3}

Affiliation

Closed-end border irrigation has been widely used in China; however, such irrigation is usually associated with poor performance. Therefore, the performance of closed-end border irrigation must be improved. The objectives of this study were to develop and verify a simplified method for estimating the optimal cut-off time (T_cop) for closed-end border irrigation. The simulated results revealed that the relationship between T_cop and the time when water advanced to 75% of the length of the border (T_0.75L) can be characterized by using a power function. The comprehensive irrigation performance indicator Y (which is the geometric mean of the application efficiency and Christiansen's uniformity) obtained using the proposed method was consistent with that obtained using existing methods. The mean absolute value of the relative error and the standard error of Y between the proposed method and existing methods was 3.35 and 0.69%, respectively. This result indicates that the proposed method has high reliability. Moreover, in the proposed method, only T_0.75L is required to determine T_cop for closed-end border irrigation. Therefore, the proposed method has high practicality and can be used to improve the performance of closed-end border irrigation.

更新日期：2020-11-23

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南

全部期刊列表>>