求翻译：盐渍土是世界性的低产土壤 ，甚至是不毛之地 ，也是引起生态环境恶化的主要原因之一，但是作为一种重要的土地资源，被世人所关注，盐渍土的改良利用成为世界性的课题 。是什么意思？

Saline soil is a worldwide low-yielding soils, even barren land, is caused by one of the main reasons for the deterioration of ecological environment, but as an important land resources in the world concerned about the improvement and utilization of saline soils has become a world subject.

Soil salinity is a world-wide, even low-yielding soil barren, deterioration of the ecological environment, but one of the main reasons as an important land resources, the world is concerned about the salt stains and improved utilization has become a world issue.

The pickling earth is worldwide basis produces the soil lowly, even is the barren land, also causes one of primary causes which the ecological environment worsens, but took one kind of important land resource, is paid attention to by the common people, the pickling earth improvement uses into the wo

Low yield soil saline soil is worldwide, even barren land, is caused by one of the main reasons for the deterioration of the ecological environment, but as an important land resources, being the world concern, improvement and utilization of saline soil became a world topic.

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