Soil nutrient fastness tester statistically analyzes the spatial variability of nutrients
The soil nutrient space has a certain correlation, because it changes the type, scale, and sampling method of soil nutrient variability at the time of research. Relatively speaking, the spatial variability of soil nutrients is relatively weak in the karst areas of Southwest China. weak. The spatial variability of soil nutrients in small-scale down-slope farmland in this area was analyzed by a soil nutrient fastness meter, and the environmental factors were used to influence the variability of soil nutrients, which provided references for soil quality assessment and rock desertification prevention and treatment in the area. Forged Ring,Stainless Steel Ring,Rolled Aluminum Rings,Aluminum Forged Rings Suzhou SNK Machinery Equipment Co.,LTD , https://www.snkforging.com
The spatial distribution of soil nutrient fastness meter was sampled at fixed points. A 100 m×100 m standard sample plot was set on the slope cultivated land on the edge of the trough and 25 sampling plots were placed at a grid spacing of 20 m×20 m, and 5 plots were taken for each plot. After the soil samples were evenly mixed, a total of 25 soil samples were obtained for the soil samples representing the sample. Due to the high degree of rocky desertification in the sampled area, large slope, and thin soil layer, sampling takes 0~20cm of surface soil for indoor physical and chemical analysis.
The soil nutrient measurement method was used to test the normal distribution of soil nutrient content values. The skewness and kurtosis coefficients and the KS normality test results showed that the content of soil nutrients in the sloping farmland of the karst area was positive. State distribution. Regular statistical analysis of soil nutrients showed that the average content of soil organic matter in the test plots was 9.35 g/kg, which was in the middle-lower level; the average content of total nitrogen was 0.92 g/kg, which was a moderate level.
Through the relevant measurement and analysis of the soil nutrient speedometer, it can be seen that the differences among the five different test points are relatively close, and the reason for this is that the nutrients contained in the five points are affected and controlled by the same factors, such as common crop types, terrain, and slopes. Wait. The largest difference in soil nutrient velocity measurement was 81.93%, which was mainly due to the amount of tillage and fertilizer applied.