【摘要】 地下滴灌方式有诸多优点，已成为微灌技术应用的典型形式之一，近年来已引起国内业界人士的重视。本文对地下滴灌技术的发展及应用现状进行了综述，并讨论了研制出一种既具有良好压力流量关系又可抗负压堵塞能力的灌水器（ 滴头） ，以促进我国推广应用地下滴灌技术。更多还原

【Abstract】 Subsurface drip irrigation (SDI) with a lot of advantages has become one of typical application measures of micro-irrigation technique, which has already paid a great attention to by personnel irrigation area in domestic since resent years. This paper summerizes development and application situations of the SDI, and a necessity is put forward to develop emitters that they are possessed of both good pressure-discharge relation and peformance of resistance to negtive pressure with the aim of spreading in nationwide.\;更多还原