Citrus fertilization methods, in general, soil fertilization and root dressing, also known as foliar fertilization.    1. Soil fertilization must be applied to the root distribution layer according to the distribution characteristics, which is convenient for root absorption, so it is also called “root fertilizationâ€. The fibrous roots (absorbed roots) of citrus are concentrated far outside the canopy, and the roots are fertilized. The growth direction is often transferred to the fertilization site. Young trees should be fertilized to induce horizontal roots and absorbing roots. Generally, organic fertilizer should be applied slightly deeper from the root layer, slightly further, and induce roots to grow deeper and deeper, forming a strong root group. Mountain Orchard Fertilizers should open ditch 30 - 40 cm deep, shallow open top dressing fertilizer generally. The position of fertilization ditch should be outside the vertical projection of the canopy (commonly known as the drip line outside the canopy), and should not be applied under the tree head.    Fertilization method: ( 1 ) Fertilization in the ring ditch. Drip the line along the canopy, digging a depth of 15 - 20 cm, a width of 30 cm, and applying the soil after the application. Used mostly for saplings. ( 2 ). Fertilization in the radiation ditch. 1 from the trunk in the crown - ditching 1.5 meters, according to the size of the crown, radially outwardly trenching 4--6 strip groove deep with a width of the annular groove, but to pay attention to the outer shallow depth, to avoid injuring the large root. Change the location every year. ( 3 ) Fertilization. Within the canopy, dig a few holes, cover the soil after application, and stagger the position every year. ( 4 ) Fertilization in the trench. It is a common method, in the outer edge of the two sides of the canopy, the depth of 20 - 30 cm, the width of 30 cm of the groove, the groove length depends on the size of the crown. Rotate the position each time.    2 , the top of the top dressing is simple and easy to use, with a small amount of fertilizer, play a fast role, can meet the urgent needs of fruit trees in a timely manner, and can avoid the fixation of certain elements in the soil and fail. But root dressing is not a substitute for soil fertilization .    After spraying the fertilizer onto the leaves, it is generally absorbed from 15 minutes to 2 hours. The young leaves absorb faster than the old leaves, and the leaf back absorbs faster than the leaves. Therefore, the leaf back should be sprayed more. In addition, young shoots, branches, stems and fruits can be absorbed.    It has an important role in the topdressing of the roots, the promotion of flower bud differentiation and the preservation of flowers and fruits. Fertilizer and concentration used for top dressing: urea 0.3 - 0.5 %, potassium dihydrogen phosphate 0.2 - 0.4 %, magnesium sulfate 0.5 - 1 %, zinc sulfate, manganese sulfate 0.1 - 0.2 % (plus 0.25 - 0.1 % slaked lime) borax 0.1 - 0.2 %, 0.05 % ammonium molybdate .
A gasket is made of paper, rubber or copper, placed between the two planes to strengthen the sealing material, to prevent fluid leakage between the sealing elements of the cover.
Gaskets are mechanical seals between two objects. They are usually used to prevent pressure and corrosion between two objects, and naturally expand and shrink in the pipeline. Because machined surfaces can not be perfect, the use of gaskets can fill the irregularity. Gaskets are usually made of sheet material, such as pads, rubber, silicone rubber, metal, cork, felt, chloroprene rubber, NBR, glass fiber or plastic polymers (such as polytetrafluoroethylene). Asbestos may contain asbestos for specific applied gaskets.
A gasket is a leak (usually in the middle) of a thin plate (usually in the middle), usually used for the distribution of load thread fasteners. Other uses are spacers, springs (Baer vill gaskets, wave gaskets), wear resistant pads, pre display devices, locking devices. Rubber gaskets are also used in faucets (valves) to cut off flowing liquids or gases. Rubber or silicon gaskets can also be used to reduce fan vibration. Usually the outer diameter of the gasket is about two times the diameter of the inner diameter.
Gaskets can be classified into non-metallic gaskets, metal gaskets and metal nonmetallic gaskets according to their material and structural characteristics, and they can be subdivided into several types.
Metal gasket:
The metal annular gasket can be divided into
The gasket washer pad between the connector and nut is usually a flat metal ring. Aluminum Gaskets,Sealing Gaskets,O Ring Gasket,High Pressure Gasket HeBei GuangHao Pipe Fittings Co .,LTD (Cangzhou Sailing Steel Pipe Co., Ltd) , https://www.guanghaofitting.com
Nonmetal gasket
Rubber gasket
Asbestos free fiber rubber gasket
Flexible graphite metal composite gasket
PTFE gasket
Polytetrafluoroethylene coated gasket
Other types of nonmetallic gaskets
Metal nonmetal composite gasket
Waveform gasket
Metal winding gasket
Metal toothed composite gasket
mjg
Metal wave tooth composite gasket
Other types of metal composite gaskets
Metal flat gasket
Corrugated metal gasket
Metal toothed gasket
Metal ring gasket
Metal lens gasket
Metal O ring pad
Octagonal ring pad
Oval ring pad
RX and BX self tight seal ring pad
Non metallic gaskets non-metallic gasket are made of gaskets made of asbestos, rubber, synthetic resin, polytetrafluoroethylene, etc.
A non-metallic gasket non-metallic jacket gasket is coated with a non-metallic gasket, such as synthetic resin.
Semi metal gaskets semimetallic gasket gaskets made of metal and non-metallic materials, such as wound gaskets and metal gaskets. A spiral wound gasket spiral wound gasket consists of gaskets made of spiral belt wrapped by metal belt of V or W section.
1) inner ring inner ring is installed in the inner ring of the winding gasket metal ring.
2) outer ring outer ring is mounted on the metal ring of the outer ring of the wound gasket. B metal coating
Metal gaskets metallic gasket are gaskets made of steel, aluminum, copper, nickel or Monel alloy.
Winding gasket is a gasket with metal band (generally V type steel strip) and non-metallic belt twisted into ring. It is intertwined alternately with non-metallic belt. Because of its good elasticity, it is widely used in the flange seal structure of petrochemical, chemical, electric and other industries. The inner layer or outer layer of the gasket can be added to the steel ring according to the specific position. Position or strengthen.
How is the citrus fertilization method?
Total 1 | <First <Prev 1 Next> Last> |
share to: