Spatial Variability and Regionalized Management of Soil Nitrogen in the Rubber Plantation in Danzhou,Hainan
The spatial variability and regionalized management technology of soil nitrogen nutrient in rubber plantation with an area of about 720 km2was studied using geo-statistics. The results showed the rubber plantations in Danzhou were widely deficient in N. The maximum correlative distance of total N,available N in content in different soil layers were between 36.97 km and 69.24 km. It revealed that the variation in content was developed in large block scale,which is useful to the regionalized management of soil nitrogen nutrients. By overlaying method of the space,the whole investigated region could be regionalized into 10 management units of nitrogen nutrient.