Mango forest Soil Nutritional Components Analysis and Research in Dong District of Panzhihua City

Purpose: the pH value of soil determines soil properties and determines whether the activities of plants and microbes in the soil are active or not. A large number of elements such as nitrogen, phosphorous and potassium in soil can reflect a basic characteristic of soil and play a guiding role in further fertilization and soil improvement. Organic matter can reflect the amount of humus in the soil, whether the soil is fertile, the fertility of the soil, and the activities of microbes in the soil. So, this study will focus on exploring the soil pH value, N, P, K factors such as organic matter, because the subjects as the mango trees, and Panzhihua is a large amount of planting mango region, therefore, to appeal the influence of factors on the mango is very direct, hope that the result of the experiment can provide some basic data on mango cultivation, to help farmers to further understanding of the nature of soil and fertilization. Methods: chemical measuring methods were applied to determine the soil pH, organic matter and N, P, K values or concentrations. Results: the average available phosphorus in the whole experimental area is only 5.24, which belongs to a slightly lower level. Conclusions: The content of phosphorus in the soil of mango forest is very low, and the phosphorus element is very deficient. It is suggested to apply phosphorus fertilizer, irrigate mango trees and reduce the pH value to improve the situation of low phosphorus