When the rose is just planted, organic fertilizer should be added as the base fertilizer. Oil, bone powder or decomposed fertilizer can be used. The dosage is 1/4-1/5 of the soil. Later, every half month of topdressing once, when weeding can be combined with weeding, and slightly loose soil, will make the rose grow better. In the winter when roses are dormant, fertilizer is buried in the mud. 20-30 cm from the base of the rose, digging a 20-40 cm deep pit. It doesn't matter if the root is broken. After adding sufficient humus soil or compost, and thoroughly mixing with the soil, each rose is mixed with 500-700 g of fermented fertilizer with a ratio of nitrogen, phosphorus and calcium of about 1:3:1. Do not fix it in one place, but apply it evenly without missing. In this case, there is no need to specialize in topdressing. The fertilizer in summer is applied in half the amount of fertilizer in winter. Because the rose is in the growth stage, don't dig the deep pit like the one dug in winter, but sprinkle it on the surface of the soil and mix it with the surrounding soil. If you dig a deep pit, you may be able to damage the roots that absorb water and nutrients. Pay attention.
Impeller normally applied in the centrifugal pumps.
Impeller is a rotating component equipped in the Pump Housing, help to transfer to energy from the motor that drives the pump to the fluid being pumped by accelerating the fluid outwards from the center of rotation.
QFAP supply various kinds of impellers to all over the world, main of our customers are from Europe, North America, Japan and Southeast of Asia.
Materials: grey Iron, ductile iron, steel castings, aluminum die castings, etc.
Surface treatment: painting, zinc plating, passivation, nickel plating, anodizing, polishing, etc.
Heat treatment: according to customer`s requirement.
QFAP have specialized in producing high precision Agriculture Parts more than 10years, Because of the long term cooperation, we could supply our customers not only the products but also our recommendation on the designs to saving costs.
Boat Impeller,Fan Impeller,Oil Pump Impeller,Blower Impeller
SHAOXING QIFENG AUTO PARTS CO., LTD. , https://www.sxqfap.com