Salineland change is mainly decided by the unit oil well output and the industry output value.
盐碱地和沙地面积变化主要由单位油井产量和工业产值决定；
2
Rice controlling irrigation techniques in NingXia are studied and the model of controlling irrigation on salineland is defined in this paper.
本论文主要对宁夏盐碱耕地水稻控制灌溉技术进行了研究，确定盐碱耕地控制灌溉模式。
3
The statistics show that from 1994 to 2001 the area of land, grass, holt and exposed land increased, while the salineland, dene, gobi and wetland decreased.