不同灌溉模式对水稻田间水利用系数的影响  

Influences of Different Irrigation Modes on Rice Field Water Utilization Coefficient

作　　者：蔡长举[1] 付杰[1] 李长江[1] 邓文强[1] 

机构地区：[1]贵州省水利科学研究院,贵阳550002

出　　处：《节水灌溉》2014年第7期19-21,共3页Water Saving Irrigation

基　　金：贵州省农业科技攻关专项计划(2011GZ71611)

摘　　要：通过在马家屯水稻灌区进行系统试验观测,采用年度灌溉净用水总量推求田间水利用系数的方法,在贵州省降雨较为丰沛条件下,推求"普灌"、"科灌"、"科蓄"等3种不同灌溉模式下的田间水利用系数,科学论证不同灌溉模式对田间水利用系数的影响,为节水灌溉技术及田间管理在农田灌溉节水环节中的作用提供理论依据。通过试验,得出3种灌溉模式下的田间水利用系数分别为0.944、0.950、0.954。结果显示,"科蓄"灌溉模式下田间水利用系数大于"科灌","科灌"灌溉模式下田间水利用系数大于"普灌"。因此,大力推广先进灌溉模式,是达到农业节水的有效途径。The systemic experimental observation is conducted in Majiatun rice irrigation district and the method for calculation of the field water utilization coefficient through annual net total irrigation water quantity is adopted to calculate the field water use coeffi- cients under three different irrigation modes, i.e. ordinary irrigation mode, scientific irrigation mode and scientific storage mode, un- der the condition of abundant rainfall in Guizhou province. Then the influence of different modes on the field water use coefficient is studied to provide theoretical basis for the effect of water saving irrigation technology and field management in farmland water saving irrigation. The experimental result shows that the field water use coefficients under the three irrigation modes are 0. 944, 0. 950 and 0. 954, which belong to ordinary irrigation mode, scientific irrigation mode and scientific storage mode, respectively. So intensively promoting the advanced irrigation modes is the effective approach for agriculture water saving.

关 键 词：田间水利用系数 科灌 科蓄 

分 类 号：S274.3[农业科学—农业水土工程]