丘陵地区水平棚架梨园节水灌溉技术研究

Study on Water-saving Irrigation Technology of Trellis Cultivation Pear Orchard in Hilly Area

为了筛选丘陵地区水平棚架梨园节水灌溉的方法,为梨园科学灌溉提供依据,对5种不同灌溉方式进行比较,从成本投入、灌溉效果等方面进行分析。结果表明,旋转微喷和平面雾化微喷灌溉方式折算成本投入,每年只需1 455元/hm^(2);同时其灌溉均匀度、水分利用率、节水率均在90%以上,灌溉效果最佳。对旋转微喷进行不同处理的试验比较,在现有油浸式水泵和输配水管道的条件下,最适灌溉面积为0.248 hm^(2),灌溉时间在4~5 h为最佳。

In order to screen the water-saving irrigation method of trellis cultivation pear orchard in hilly area,and provide the basis for scientific irrigation of pear orchard,five different irrigation methods were compared from the aspects of cost input and irrigation efficiency.The results showed that it only need 1455 yuan/hm^(2)per year by the irrigation methods of rotating micro jet and plane atomization micro-spary.Besides,the irrigation uniformity,water utilization rate and water saving rate were all above 90%.So the irrigation effects were the best by the irrigation methods of rotating micro jet and plane atomization micro-spary.The experimental comparison of different treatments on the rotating micro jet showed that the optimal irrigation area was 0.248 hm^(2),and the optimal irrigation time was 4-5 h under the condition of the existing oil-immersed pump and water distribution pipeline.