地下水位及矿化度对作物生长发育的影响苗济文罗代雄马云瑞张益民（宁夏农林科学院土肥所银川７５０００２）银北地区地势低平，排水困难，盐、渍害已成为该地区影响农业生产的两大障碍因素。近年来，我区的农业专家已从多方面研究了盐分对作物的危害以及危害的临界值，但... Effects of groundwater level and salinity on crop growth and development Miao Jizhen, Luo Daixiong, Ma Yunrui, Zhang Yimin (Soil and Fertilizer Institute, Ningxia Academy of Agriculture and Forestry, Yinchuan 750002) Low terrain, difficulty of drainage, Two major obstacles. In recent years, agricultural experts in our region have studied the harm of salt to crops and the critical value of harm from many aspects, but ...