微润灌溉技术在大棚娃娃菜种植中的应用

Application of Self-suction Micro-irrigation to Baby Cabbage Planting in Greenhouses

微润灌水器是一种新型的微灌设备,为了更好的推广应用这一设备,将微润灌溉技术在大棚中进行应用。试验通过对比微润灌与滴灌两种灌水器、灌水器地表和地下两种应用形式对娃娃菜生长、耗水及产量等的影响,结果表明:在娃娃菜生长期内,各处理灌水量、株高和日耗水量均随着生育期的进行先增大后减小;不同处理之间,微润灌溉娃娃菜全生育期灌水量、株高、展开外叶片数、根面积、根长、日耗水量、全生育期总耗水量和产量高于滴灌灌溉,且同一种灌水器,除灌水量、日耗水量和全生育期总耗水量外,地下灌溉各指标均高于地表灌溉;水分利用效率从大到小依次为地下滴灌>地下微润灌>地表微润灌>地表滴灌。由此可见,微润灌溉尤其是地下微润灌溉适宜用于温室作物灌溉。

Self-suction micro-irrigation is a new kind of water-saving irrigation equipment, to make the equipment more popularized, in this paper, it is utilized in greenhouse. Effect of self-suction micro-irrigation emitter and drip irrigation emitter, and each emitter used on the surface and in subsurface, on the growth, water consumption and yield are compared in the experiment. The results show that during the growing season, the amount of irrigation water, plant height and water consumption increased first and then de- crease; the amount of total water irrigated, plant height, number of unfold blades, root area, root length, daily water consumption, total water consumption and yield of self-suction micro-irrigation are higher than drip irrigations, and for the same emitter, sub-irri- gation was better than irrigation on surface except for the amount of irrigation water, daily water consumption, total water consumption; water use efficiency was followed by sub-drip irrigation^sub self-suction micro-irrigation〉 self-suction micro-irrigation〉drip irrigation. Therefore, self-suction micro-irrigation, especially used in subsurface, is suitable for greenhouse.