作物根区无压地下灌溉技术灌水指标研究  

Experiment of Non-pressure Subsurface Drip Irrigation in Crop Root

作　　者：陈新明[1] 蔡焕杰[1] 王健[1] 

机构地区：[1]西北农林科技大学,陕西杨凌712100

出　　处：《灌溉排水学报》2005年第2期5-9,共5页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(50479051);国家重大科技专项(2002AA2Z4031)

摘　　要：作物根区无压地下灌溉技术是一个正在研究开发的新的节水灌溉技术。通过在温室大棚种植黄瓜、番茄,采用不同供水压力和不同灌溉方式试验,研究分析了根区无压地下灌溉对作物根区土壤水分、耗水量、产量和作物品质等指标的影响。研究表明该技术能够满足黄瓜和番茄需水量要求;与传统沟灌相比能够节约灌溉水量30%以上;它并不降低作物产量,反而提高了水分利用率和水分生产率,并使黄瓜和番茄作物品质得到了显著改善。The new technique of Non-pressure Subsurface Drip Irrigation, a way to control irrigation water in crop roots zone, is developed. The paper studies the impact relationship between soil moisture movement in crop roots zone, crop water requirement and yield and quality of cucumber and tomato under the condition of Non-pressure Irrigation in greenhouse with different irrigation level. The results indicate that the new technique can be used in cucumber and tomato and irrigation water can be saved by 30% compared to furrow irrigation. The trial also indicates that crop outcome is not influenced, but quality of cucumber and tomato is improved and water application efficiency is added.

关 键 词：指标研究 无压 灌水 节水灌溉技术 作物品质 水分生产率 水分利用率 研究开发 大棚种植 灌溉方式 供水压力 根区土壤 地下灌溉 研究分析 灌溉水量 作物产量 黄瓜 番茄 耗水量 需水量 温室 沟灌 

分 类 号：S275.4[农业科学—农业水土工程]