论文部分内容阅读
为了加速滨海垦区盐土改良,省垦区水利土壤改良研究所进行了“竖井排水改良盐土”的试验研究,并于1984年12月通过技术鉴定。我省滨海垦区,耕地一千万亩以上,现在还有重盐地一百一十万亩左右。本区潜水埋藏浅,水质矿化度高、土质通透性差、易产生次生盐渍化。如何快速改良盐土,竖井排水是个新路子,其效益有五个方面:1.排降地下水位:雨后地下水埋深接近地面,要排到1.5米以下,距井25～250米比
In order to speed up the improvement of saline land reclamation in Binhai reclamation area, the Institute of Water Conservancy and Soil Improvement in Land Reclamation conducted a pilot study of “Shallow drainage improvement salt soil” and passed the technical appraisal in December 1984. Coastal reclamation area in our province, cultivated land more than 10 million mu, and now there are 1,100 acres of heavy salt land. Diving buried in this area shallow, high water mineralinity, poor soil permeability, easy to produce secondary salinization. How to quickly improve salt, shaft drainage is a new path, the benefits of five aspects: 1. Drainage of groundwater levels: Groundwater depth after the rain close to the ground, to be discharged to 1.5 meters below the well 25 to 250 meters