In the later stage of yam, it is difficult to dissolve the phosphorus and potassium compound fertilizer, and it is not good to open the ditch and cover the soil. What should I do?

There are two main options available for application: First, you can spray the crop with a solution of potassium dihydrogen phosphate (KHâ‚‚POâ‚„) in the later growth stage. The recommended concentration is between 0.3% and 0.4%, and it should be applied 2 to 3 times. Alternatively, you can use a filtrate made from water ash or superphosphate, which provides similar benefits. This method helps improve the plant's nutrient absorption and enhances overall yield. The second option involves applying high-nitrogen compound fertilizer. It is advised to use 1 to 2 applications, with each dose ranging from 10 kg to 15 kg per acre. This type of fertilizer dissolves easily in water, making it an efficient way to provide essential nutrients directly to the roots. It ensures that the plants receive a balanced supply of nitrogen, which is crucial for healthy growth and development. Both methods are effective and can be chosen based on the specific needs of the crops and the availability of resources. Itâ€™s important to follow the recommended dosages and timing to avoid over-fertilization, which can harm the plants. By using these techniques, farmers can significantly improve their harvest quality and productivity.

SP metal Vertical Slurry Pumps

Naipu SP metal Vertical Slurry Pumps are vertical, centrifugal slurry pumps submerged in sump to work.They are designed for delivering abrasive,large particle and high density slurries.These pumps have no need of any shaft seal and sealing water. They can also be operated normally for insufficient suction duties.Wet parts of type NP-SP pump are made of abrasion-resistant metal. All parts of type NP-SP(R) pump immersed in liquid are lined with rubber outer liner.They are suited to transport non-edge angle abrasive slurry.

Typical Applications---

Sump drainage washdown
Floor drainage
Mill sumps
Carbon transfer
Monitoring

Magnetite mixing

Showing Component

Main Part Number At The Drawing

1.Discharge Pipe
2.Column
3.Strainer
4.Back Liner

5.Impeller
6.Pump Casing
7.Lower Pipe

Materials of Construction

	IMPELLERS	CASING	COLUMN	DISCHARGE	SEALS
Standard	High Chrome Alloy Rubber	High Chrome Alloy Rubber	Mild Steel Mild Steel Rubber Lined	Mild Steel Mild Steel Rubber Lined	Natural Rubber Rubber
Options	Butyl EPDM Hypalon Polyurethane 316 SS W 151	Neoprene Butyl EPDM Hypalon Nitrile 316 SS W 151	Neoprene Butyl Nitrile 316 SS	Neoprene Butyl Nitrile 316 SS	Nordel Neoprene Viton Hypalon Butyl EPDM

Selection Chart

NP-SP SUMP PUMP PERFORMANCE PARAMETERS

Type	Allowable Mating Max. Power(Kw)	Range Of Performance					Impeller
		Capacity/Q		Head/m	Speed/rpm	Max Efficiency/%	No. of Vanes	Impeller Diameter/mm
		mÂ³/hr	L/S	Head/m	Speed/rpm	Max Efficiency/%	No. of Vanes	Impeller Diameter/mm
40PV-NP-SP	15	19.44-43.2	5.4-12	4.5-28.5	1000-2200	40	5	188
65QV-NP-SP	30	23.4-111	6.5-30.8	5-29.5	700-1500	50	5	280
100RV-NP-SP	75	54-289	15-80.3	5-35	500-1200	56	5	370
150SV-NP-SP	110	108-479.16	30-133.1	8.5-40	500-1000	52	5	450
200SV-NP-SP	110	189-891	152.5-247.5	6.5-37	400-850	64	5	520
250TV-NP-SP	200	261-1089	72.5-302.5	7.5-33.5	400-750	60	5	575
300TV-NP-SP	200	288-1267	80-352	6.5-33	350-700	50	5	610

Sp Metal Vertical Slurry Pumps,40Pv Vertical Slurry Pump,100Rv Vertical Pump,Vertical Sump Pump

Shijiazhuang Naipu Pump Co., Ltd. , https://www.naipu-pump.com