棉花膜下滴灌湿润峰的试验研究

以试验为基础,对重壤土、中壤土和沙土的湿润峰与滴头流量间的关系,以及湿润峰的演变规律进行了研究,得出了适用于不同土壤的滴头流量和滴头间距。另外,验证了“一膜一管”布置形式的可行性,提出了该条件下棉花栽培方式的改进要求。试验结论与生产实际吻合很好。

Experimental Research about the Wetted Front of Mulch-Trickle Irrigation for Cotton

Since their governing irrigation quality directly to crop and influencing the cost of putting trickle irrigation technique into practice in field, the important parameters about the dripper discharge and the shape of wetted bulb in soil, which are the most fundamental to the design of trickle irrigation system, should be researched for this kind of technique could be utilized and spread well in field. In this paper, based on experiments, the problem of the relation of wetted front in clay loam, loam, and sandy soil with dripper discharge was studied as well as the law of the wetted front developing in soil. The available dripper discharge and the spacing between drippers were found for various soils. The layout of "one film and one trickle lateral line" was practically verified , but the mode of cotton planting should be reformed. The experimental results fell in well with practical conditions.