1. Paper analyzed formation and characteristics of light sierozem in Ningxia, put forwards existing problems during developmental sierozem, and discussed ways of its amelioration and utilization.
在分析了宁夏淡灰钙土现状的基础上,阐述了淡灰钙土开发利用中存在的问题,探讨了改良利用的途径。
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2. Paper analyzed formation and characteristics of light sierozem in Ningxia, put forwards existing problems during developmental sierozem, and discussed ways of its amelioration and utilization.