汾河灌区春玉米不同灌溉模式节水增产效果试验研究

Experimental Study on the Effect of Water-saving and Production-increasing for Spring Maize Under Different Irrigation Modes in Fenhe River Irrigation District

针对汾河灌区目前普遍采用的河水冬灌一水+井水夏灌一水、井水春灌夏灌各一水和河水春灌一水的灌溉模式,进行了试验测试,结果表明,在试验年份条件下,不同灌溉模式春玉米的耗水量变化于241.5~438.7 mm,日均耗水量变化于1.68~3.13 mm;春玉米耗水量和产量、水分利用效率之间的关系均呈二次抛物线形式;在分析不同灌溉模式下抗旱效果的基础上,提出了切合灌区生产实际、比较科学合理的灌溉模式。

Three irrigation scheduling, which are once irrigation with river water in winter and once well water in summer（ model 1 ）, 2 times well water in spring and summer（model 2）, river water once in spring（ model 3 ）, were carried out in Fenhe irrigation district. Under the test year, The results show that water consumption of spring maize changes in 241.5 - 438.7 mm for different irrigation scheduling,the daily water consumption changes in 1.68 - 3.13 mm;The relationship between the yield and water consumption, and the relationship between water use efficiency of spring maize and water consumption, all are a quadratic parabola form; The yield of model 1 is the highest, more than ones of mode 2 and mode 3 by 9.4% and 7.1% respectively. The mode 1 is more realistic, scientific and reasonable for the irrigation district.