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通过对不同流量的滴头，不同灌水历时条件下沙地土壤滴灌湿润体的大小与形状的观测观察，以及对滴灌停止后不同间隔时间的土壤湿润锋运移，湿润体的发展，土壤水分的分布与再分布测量分析，使之对滴灌条件下土壤湿润体的大小及发展、土壤水分的分布与再分布规律等有了比较清楚的认识。本文不进行理论上的土壤水分分布模拟，仅从众多的实测资料分析着手，揭示土壤水分分布与运移规律，旨在为砂壤地玉米滴灌的参数确定（滴头间距、流量、灌水历时等）提供基本依据。通过土壤水分与湿润体实测资料分析认为，滴灌玉米的滴头流量在２．０ｌ／ｈ左右，灌水历时２～３ｈ，滴头间距为５０ｃｍ左右为宜。过长的灌水历时（大于３ｈ）即可能导致灌溉水的无为损失，造成先进的节水灌溉技术条件下新的水浪费问题。滴头间距过密，会加大不必要的工程投资。
Through observing the size and shape of the drip irrigation wetlands under different drip irrigation durations and different irrigation durations, and analyzing the development of wetting front, the development of wetting body and the distribution of soil moisture at different intervals after drip irrigation stopped And redistribution of measurement and analysis, so that the drip irrigation under the conditions of the size and development of soil moisture, soil moisture distribution and redistribution rules have a more clear understanding. This paper does not simulate the soil water distribution in theory, but analyzes and analyzes the distribution and migration of soil moisture only based on a large number of measured data. The purpose of this paper is to determine the parameters of drip irrigation for drip irrigation in sand soil (dripper spacing, flow rate, irrigation duration, etc. ) Provide the basic basis. Soil moisture and wet body measured data analysis shows that drip irrigation corn drip flow rate of about 2.0l / h, irrigation lasted 2 ~ 3h, drop head spacing of about 50cm is appropriate. Excessive irrigation duration (more than 3h) may lead to inaction water loss irrigation, resulting in advanced water-saving irrigation technology under the conditions of the new waste of water. Dirt spacing is too close, will increase unnecessary project investment.