1、 Suitable plants

Superphosphate is widely used in rice, wheat, corn, sorghum, cotton, melons, fruits, vegetables and other food crops and cash crops. At the same time, it can be applied in most soils, such as red soil, yellow soil, brown soil, yellow tide soil, black soil, cinnamon soil, purple soil, Albic Soil and so on, especially in phosphorus deficient areas such as North China, northeast and Northwest China. Calcium superphosphate can be used as base fertilizer, topdressing outside the root and foliar spraying, which can promote the germination, long root, branching, fruiting and maturity of plants. Pure calcium superphosphate is dark gray or gray white, powder, sour, corrosive and soluble in water.

2、 How

The utilization rate of superphosphate is low, generally only 10% ~ 25%. The main reason is that after being applied to the soil, the water-soluble phosphoric acid in the fertilizer is easy to be fixed and the moving distance is short. Therefore, the application of calcium superphosphate is best to reduce the contact area with soil and increase the contact opportunity with roots.

Whether as base fertilizer, seed fertilizer or topdressing, the effect of centralized application will be better. It can also be applied in layers. Calcium superphosphate is applied to the bottom or middle layer of the soil during deep tillage and deep ploughing, and to the surface layer of the soil during sowing or planting. Secondly, it can also be mixed with organic fertilizer, which can reduce the fixation of phosphorus. In addition, it can also be made into granular fertilizer to increase the fertilizer efficiency time. In addition, spraying calcium superphosphate outside the root can prevent phosphorus from being fixed in the soil and can be directly absorbed by crops.