Deep application of calcium, magnesium, iron, aluminum, phosphorus easily fixed in the soil, and the mobility is small, and therefore should be applied in the vicinity of the phosphorus fertilizer deep root crops, can increase the chance of contact with the phosphate root, both absorbed by the plants and Reduce weed consumption and increase utilization. It can be used for seed dressing, strip application, hole application, etc., and the effect is very good.

Early applied as basal fertilizer to be applied early, due to the critical period of crop phosphorus seedling stage. Phosphorus is not deficient in the seedling stage, and there is little phosphorus deficiency in the middle and late stages of crop growth. Therefore, phosphate fertilizer has a good effect on the base fertilizer.

Mixed fertilizer and fertilizer or manure heap higher quality after the mixing composting organic fertilizer, phosphate fertilizer can hardly soluble phosphorus crop conversion can use, and because the P and organic manure composting, reduced soil Direct contact can reduce the fixation of phosphorus and improve fertilizer efficiency.

Single application of phosphorus should not be administered separately, administration and preferably with nitrogen. Nitrogen, phosphorus and potassium according to the ratio of production efficiency and increase yield administration, any of which good than single application, generally nitrogen, phosphorus and potassium ratio of 1: 0.4: 1.2 as well appropriate amount of phosphate fertilizer long administration, application group 1 manageable 2--3 crop, it is unnecessary for each crop are P fertilizer, generally 1--2 years once administered group. At the same time, the appropriate amount should be calculated according to the target yield and soil fertility of different crops, and the balance of nitrogen, phosphorus and potassium should be considered .

Crop foliage performed before and after flowering foliar application with superphosphate, late root crop aging, diminished ability to absorb nutrients, often resulting Tuofei, when spraying with a water-soluble phosphate works well, spraying a concentration of 0.5 - 2% time should be in the morning or evening.

Due to soil and fertilizer application i.e. superphosphate fertilizer is acidic, suitable neutral, alkaline soil application, preferably with calcium and magnesium phosphate in acidic soils.

It is administered by the most suitable fertilizer phosphorus particularly sensitive crops, in the application emphasis on beans, cotton, wheat, potato, melon, good economic benefits. In addition, the phosphate fertilizer should be applied in a concentrated manner. It is precisely this meaning that “a large piece of fertilizer is applied, which is not as good as a long line”. The dosage is small and the effect is large.

Can not be mixed with alkaline ash applying fertilizers, lime and other substances are strongly alkaline, if mixed administration, will significantly reduce the effectiveness of the fertilizer, yield benefits of phosphorus supplement, should generally be staggered 7--10 administered one day.