TWO IMPORTANT ASPECTS IN THE RESEARCH ON SOIL WATER RESOURCES AND THEIR SIGNIFICANCE TO WATER-SAVING AGRICULTURE --TAKING PLAIN AREA NORTH OF HUANGHE RIVER IN NORTH CHINA AS AN EXAMPLE

  • 土壤水资源研究的两个重要方面及在农业节水中的意义--华北黄河以北平原地区为例
目录 查词历史