人民黄河Issue(12)：98-100,103,4.DOI:10.3969/j.issn.1000-1379.2013.12.031
豫北引黄灌区水稻控制灌溉节水技术试验
Experimental Study on Rice Water-Saving Technique by Controlling Irrigation Carried out at the Yellow River Diversion Irrigation Area in Northern Henan Province
摘要
Abstract
A series of control irrigation tests on rice with control indicator of up-layer (0-40cm)soil moisture content at 50%,60%,and 70%(SMC)respectively together with flush irrigation were carried out and the contrast testing results show that the irrigation efficiencies of control irri-gation at water content of 50% and 60%(SMC)are higher than that of the flush irrigation but the grain yields are lower. However,both irrigation efficiency and grain yield reach the peak when the control proportion is set as 70%(SMC),and also the multifold benefits such as grain production increase,water saving and irrigation management works decrease can be achieved at the same time. The control irrigation can only be practiced after the transplanted seedling turn green completely,i. e. the yellow color at the end of the lamina fades away and the seedling begin reviving,in case the growth of the crop may suffer seriously. The time to carry out the control irrigation can be predicted according to the field monitoring results as well as the interval of irrigation and characters of the soil. Generally speaking,the rice needs one control irrigation (when MC of the up-layer soil reaches 70% SMC)every 4 to 6 days if no rain water is available,and the exact interval depends on the temperature level.关键词
水稻/控制灌溉/水分利用效率/试验/引黄灌区Key words
rice/control irrigation/irrigation efficiency/experiment/Yellow River diversion irrigation area分类
农业科技引用本文复制引用
程顺中,李中生,路振广,马宁宁..豫北引黄灌区水稻控制灌溉节水技术试验[J].人民黄河,2013,(12):98-100,103,4.基金项目
河南省重大公益性科研项目（101100911100）。 （）
