Orchard soil fertilization

Orchard soil fertilization

Organic fertilizers and most inorganic fertilizers (fertilizers) should be applied below the surface of the soil, which is beneficial to the absorption of the roots, and the robust trees, which can also reduce the loss of fertilizer.

First, fertilize the entire garden fertilizing the whole garden, spread the fertilizer and soil with hoe or turn it into the soil. Under the conditions of grass, sprinkle the fertilizer on the grass. After the fertilization in the whole garden, it is suitable for irrigation and has high efficiency. This method has a large area of ​​fertilization, which facilitates root absorption and is suitable for adult trees and densely planted trees.

Second, ring (ring) fertilization ring groove should be opened under the projection of the outer edge of the crown, when the fertilization amount is large, the ditches can be excavated and deepened. Apply soil immediately after fertilization. Suitable for saplings and early fruit trees, too densely planted trees should not be used.

Third, the radiation groove (radial) fertilization from the canopy under the outer groove, the inside of the end of the tree from the outer edge of the projection of a little inside, the outer end of the canopy extends beyond the outer edge of the projection. Ditch 4-6, width and depth depending on the amount of fertilizer. Cover soil after fertilization. This method of fertilization has less root damage and can promote root absorption. It is suitable for adult trees. Trees that are too densely planted are not suitable for use. In the second year of fertilization, the position of the ditch should be staggered.

Fourth, the ditch and fertilization between the rows of fruit trees to open the ditch, you can open more than one, with the ditch with fertilization, timely cover soil. This method is convenient for mechanical or animal work. Many foreign orchards use this method to fertilize and have high efficiency. However, it is required that the orchard be flat on the ground, and it is necessary to facilitate the operation and irrigation of the ditch.

Source: New Rural Business Network

Welded Bed Plate For Flanges Of Ship Pipe

The flange welded single-sided seat plate is mainly installed on the top, side wall and bottom of the cabin or cabinet as the entrance and exit of the cabin or cabinet. Valves, accessories or pipes can be installed directly on the single-sided seat plate.

Flange welded single-sided seat plate is suitable for seawater, fresh water, oil, air and steam pipelines below 300 °C. The commonly used nominal diameter is 15~150 mm, and the nominal pressure is lower than 1.6 MPa. The shape of the single-sided seat plate is similar to the corresponding lap-welded Steel Flange.

Flange welded double-sided seat plates are generally used when pipelines pass through decks and tanks, and the two sides of the seat plate are respectively connected to valves, accessories or pipes.
Compared with the single-sided seat plate, the double-sided seat plate has an extra shoulder and double-sided mounting stud bolts. The outer diameter of the shoulder is 10~20 mm larger than that of the corresponding flange, and the thickness of the shoulder is 6~12 mm.
Its scope of application and other structural dimensions are basically the same as those of the single-sided seat plate.
The manufacturing and installation methods of the flange-welded double-sided seat plate are basically the same as the single-sided seat plate, but when the screw holes are drawn, the positions of the upper and lower screw holes of the seat plate must be staggered from each other and must not overlap; deck or bulkhead The diameter of the hole on the top is 2~3 mm larger than the diameter of the seat plate.

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