Rubber Research Institute;
Chinese Academy of Tropical Agricultural Sciences/Danzhou Investigation & Experiment Station of Tropical Crops;
Ministry of Agriculture and Rural Affairs;
Danzhou;
China;
Wenchang Rubber Research Institute of Hainan State Farms;
Wenchang;
China;
Rubber Tree (Hevea brasiliensis); Soil NH+sub style="margin-left:-10px; "4-N; soil NO-sub style="margin-left:-4px; "3-N; Wenchang; Correlation;