TY - Acta Geographica Sinica A1 - Yang Shixiu, Lei Zhidong T1 - SPATIAL STRUCTURE OF SOIL WATER CONTENT AND SAMPLING NUMBER DETERMINATION IN THE FIELD Y1 - 1993-09-15 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 447 EP - 456 VL - 48 IS - 5 UR - {https://www.geog.com.cn/EN/10.11821/xb199305008} N1 - 10.11821/xb199305008 ER -