The measuring soil sample chooses the purple soil which wide distribute in southwest.
Potassium fertilizer should be applied to red-brown-purple soil especially paddy soil to supplement and maintain the K level in soil.
Al, Fe accumulation is clearly found in the red-purple soils.
Soil in hilly regions in the middle of Sichuan Province is mainly a type of purple soil which has been developed from the purple shale rock.
The main chemical properties of yellow soil and acid purple soil in tea gardens in the west of sichuan province, are fully described and analysized.
Meanwhile, slope gradient had a great impact on purple soil erosion processes.
Paddy soil had significantly higher contents of TN and AN than yellow soil and purple soil.
Heavenly bamboo was planted to POTS with three different types of soil (black limestone soil, yellow soil and purple soil) in order to study the differences of heavenly bamboo.
The typical and representative purple soils in Sichuan Basin are red purple soil (acidic), gray-brown purple soil (neutral), and red-brown purple soil (calcareous).
