Calcium superphosphate is used as a seed fertilizer to improve phosphorus nutrition at the seedling stage. However, superphosphate with good quality, high phosphorus content, and no more than 0.5% trichloroacetaldehyde content should be used to prevent seed germination. When superphosphate is used as a seed fertilizer, it can be used in combination with organic fertilizer, or it can be applied separately. It is advisable to apply 20 kg to 25 kg per mu. When using calcium superphosphate, it should be used with the mixture. Long-term storage after seed dressing; when transplanting rice, it can be used to root, and the effect is also very good.
Three-material superphosphate is also called heavy superphosphate. This kind of phosphate fertilizer is suitable for all kinds of soils and all kinds of crops. As long as the application method is proper, it can receive a significant increase in production. When making fertilizers, due to the high content of this phosphate fertilizer, the application amount should be reduced by half and attention should be paid to uniform application. Generally, it is appropriate to apply 5 to 7.5 kilograms per acre, which can be applied to a plant, acupuncture, or furrow, and it should be applied as much as possible. This can reduce the contact with the soil, reduce the fixation of phosphorus in the soil, and increase the effective utilization of phosphorus. .
The diammonium phosphate diammonium phosphate can be used as a base fertilizer for seed fertilizer or top dressing application, but it is better to use base fertilizer and seed fertilizer. When using it as a seed fertilizer, the amount should not be too much, 2.5 to 5 kg per mu should be used, and Attention should be paid to segregation with seeds to prevent burning seedlings. When soaking, 2% diammonium phosphate solution, ie 1 kg of diammonium phosphate, is dissolved in 50 kg of water, soaking corn seeds for 50 kg, for 24 hours, dipping. After a little dry, you can sow.
When ammonium sulfate is used as a seed fertilizer, there is no adverse effect on seed germination or seedling growth. When sowing wheat, it is necessary to ensure that the seeds and fertilizers are dry, and be sure to follow the mixing and sowing. When rice is transplanted, ammonium sulfate and decomposed organic fertilizers can also be added into water to form a paste.
Types of wheelchairs
1. According to material classification, aluminum alloy, light material and steel aluminum alloy, light material and steel.
2. According to the type, it can be divided into manual Wheelchair and electric wheelchair, among which manual wheelchair can be divided into manual push and self-service type.
3. According to people's needs, it can be divided into single side wheelchair, toilet wheelchair, sports wheelchair and lying wheelchair.
4.According to whether it can be folded It can be divided into foldable and unfoldable wheelchairs.
Wheelchair
Medicare Wheelchair,Multifunction Wheelchair,Wheelchair Rehabilitation,Folding Electric Wheelchair
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