未加利用的宜林、宜农、宜草的、可开垦的、荒芜的土地。
沿海滩涂作为重要的土地后备资源，加快对其开发利用已非常迫切。
Coastal area as important land reserve resource, accelerate and develop and utilize to it already very urgent.
为了能够尽快利用这片土地后备资源，进行促淤并陆研究是非常必要的。
In order to make use of this potential land resource as early as possible, it is indispensable to study of promoting deposit and merging mainland of Tiaozini sands.
近代黄河三角洲是山东省土地垦殖率最低，土地后备资源最丰富的地区。
The recently-formed delta of the Yellow River is the region where there are the lowest rate of reclamation and the richest reserve land resources in shandong province.
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