垄膜沟种涌泉灌溉技术要素的试验研究

在垄膜沟种农田进行了涌泉灌灌水试验，通过对水流推进过程观测，分析了田面水流运动特性，研究了沟宽对田间灌水均匀度的影响，并对垄膜沟种涌泉灌溉技术要素进行了探讨。结果表明，涌泉灌田面水流推进曲线可用幂函数表示。随着沟宽的增大，灌水均匀度呈下降趋势。从灌水质量和管网成本两方面综合考虑，试验条件下灌水技术要素的入沟流量、沟宽和灌水器间距分别以80～100L/h、20-30cm和4～5m为宜。

Experimental Research on Technical Parameters of Bubble Irrigation under Ridge Film Mulching and Furrow Planting

Through bubble irrigation experiments conducted in ridge film mulching and furrow planting farmland, based on the obserration of water advance process, the flow characteristic of field water and the influence of furrow width on the irrigation uniformity were analyzed in this paper. Furthermore, the technical parameters of bubble irrigation under ridge film mulching and furrow planting were discussed. The research results showed that the water advance process could be described by a power function and the irrigation uniformity showed a decreasing tendency with the increase of furrow width. Based on integrated consideration with the irrigation performance and the cost of pipe net, the optimal combination of inflow discharge, furrow width and space between irrigator are from 80 to 100 L/h, from 20 to 30cm and from 4 to 5m, respectively.