干旱缺水地区根系分区交替灌溉技术探讨

干旱缺水地区的科学合理灌溉模式不仅能为作物提供适宜的水分,降低ET损耗,还能使土壤中的水、气、热维持在良好状态,给作物生长发育带来良性刺激,有利于提高作物产量.本文探讨干旱缺水地区地表滴灌与地下滴灌相结合的作物根系分区交替灌溉模式,包括两种布置方式:1)滴灌带单行直线布置;2)滴灌带双行直线布置.两种布置方式有其不同的适用性,但地表及地下滴灌带单行铺设易于在生产实际中得到推广.地表灌溉与地下灌溉相结合的灌溉模式对于干旱缺水地区推广精准灌溉,发展现代农业具有重要的意义.

Discussion on Root Partition Alternate Irrigation Technology in Water Shortage Area

The scientific and reasonable irrigation model in water shortage area not only can provide appropriate moisture for crop and reduce ET loss, but also can keep the soil water, gas and heat in good condition, thereby bringing positive stimulus to the growth of crop, which is beneficial to increase crop yield. This paper discusses the root partition alternate irrigation mode combining surface drip irrigation and subsurface drip irrigation in water shortage area, including two kinds of arrangement modes: 1) drip irrigation belt single linear arrangement; 2) drip irrigation belt double linear arrangement. Two kinds of arrangement modes have different applicability, but surface and subsurface drip irrigation belt single line pavement is easy to get promotion in actual production. The irrigation mode combining surface irrigation and subsurface irrigation has great significance for promoting accurate irrigation and developing modern agriculture in the water shortage area.