Physico- chemical properties of soil from six firkas in Dharmapuri district,Tamil nadu, India.

The study area consisted of six firkas in Dharmapuri district, Tamil Nadu, India: Marandahalli, Vellichandai, Palacode, Karimangalam, Pulikarai, and Periyanahalli. A GPS device was used to record the locations of soil samples. pH, EC, sand, silt, clay, BD, WHC, OC, Calcium carbonate, and available NPK were determined in the samples. After converting the data to vector layers, kriging was used to build a spatial variability map of each soil parameter.

本研究的区域为印度泰米尔纳德邦达马里普里县的六个菲尔卡（firkas），分别为马林达哈利（Marandahalli）、韦利钱代（Vellichandai）、帕拉科德（Palacode）、卡里曼加拉姆（Karimangalam）、普利卡拉伊（Pulikarai）与佩里亚纳哈利（Periyanahalli）。采用GPS设备记录土壤样本的采集点位。对采集的土壤样本开展测定，涵盖pH值、电导率（EC）、砂粒、粉粒、黏粒、容重（BD）、持水量（WHC）、有机碳（OC）、碳酸钙以及速效氮磷钾。将数据转换为矢量图层后，运用克里金法（kriging）构建各土壤参数的空间变异分布图。