Straw fertilization has a wonderful method

September 01 02:21:53, 2025

In the first month before fertilization, prepare crop straw, human waste, livestock manure, and an appropriate amount of horse manure along with grain. This preparation is essential to ensure a balanced mix that promotes effective composting. Next, process the crop straw by cutting it into small pieces of approximately 3 cm in length. Then, combine the human, livestock, and poultry manure with the crushed straw in a ratio of 3:7. Add water to this mixture to maintain proper moisture levels, which is crucial for microbial activity during decomposition. After mixing, create a compost pile using prepared horse manure or sputum as a base. To generate heat, place a hot layer (a warm center) at the bottom—this can be created by adding a small amount of decomposing material or using a heated source. Layer the mixed straw on top of this warm center, forming a round pile. The height of the pile should be at least 1.5 meters to ensure efficient fermentation. Once the pile is formed, monitor it closely. Avoid people and animals from walking on it, and check the temperature daily. Maintain the internal temperature around 60°C, with a maximum limit of 70°C. This temperature range is ideal for microbial activity, accelerating the breakdown of the straw. After 7 to 10 days, turn the pile over and water it every 7 days for a total of 3 to 4 times. After about 30 days, the compost will be fully fermented. The resulting straw fertilizer will appear dark, soft, and have an earthy smell. When squeezed in hand, it should easily fall apart without clumping. For application, this compost can be used as a base fertilizer. In general farmland, apply 1 to 1.5 tons per mu. For open field vegetable plots, use 2 to 3 tons per acre. In greenhouses or controlled environments, it can be applied as a full-layer or strip application, with 3 to 5 tons per acre recommended. This method ensures nutrient-rich organic fertilizer that improves soil structure, enhances microbial activity, and supports long-term crop growth.

Frog Bolt

Other Track Bolt styles


Materials: Steel Q235, 35#, 45#; Alloy Steel 40Cr, 42CrMo, 35CrMo

Grade: 4.6/4.8/5.6/5.8/8.8/10.9/12.9, AREMA Gr5/Gr8

Standard: AREMA, UIC, DIN, BS, GOST, NF, JIS, GB/TB, AS or required specification from clients

Type: Fish Bolt/ Frog Bolt/ Clip Bolt/ Clamp bolt

Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating


Most popular bolt:

Fish bolts with button head and square head are most popular, with specifications as below:

Type
Button head oval neck fish bolt

Button head diamond neck fish bolt

Square head fish bolt

Grade
4.6
5.6
8.8
10.9

Material
Q235
35#
45#
40Cr

Mechanical properties
Tensile strength:≥400Mpa
Tensile strength:≥500Mpa
Tensile strength:≥800Mpa
Tensile strength:≥1000Mpa

Yield strength:≥240Mpa
Yield strength:≥300Mpa
Yield strength:≥640Mpa
Yield strength:≥900Mpa

Elongation:≥22%
Elongation:≥20%
Elongation:≥12%
Elongation:≥9%

Cold bending:90 degree without crack
Cold bending:90 degree without crack
Cold bending:90 degree without crack
Cold bending:90 degree without crack

Surface
Plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing

Standard refers
AS, BS 64, DIN, AREMA/SAE,NF,JIS


Accessories

* Nut:

Type: square nut/heavy square nut/hex nut/heavy hex nut/flange nut/slotted nut/lock nut/wrench nut, etc.

Material:Steel Q235, 35#, 45#; Alloy Steel 40Cr, 42CrMo, 35CrMo

Grade: 4/5/8/10/12, AREMA ,SAE J995

Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating


*Spring washer

Material: 65MN/60Si2Mn

Grade: AREMA 1967/ GB

Surface: Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro coating


Other bolt styles

*Clip bolt for tension clip



*Clamp bolt for clamp



* Frog bolt for turnout: square head bolt/thin square head drilled bolt/BHON bolt



*Tunnel bolt: Spear bolt/ curved bolt

Frog Bolt,Button Head Oval Neck Frog Bolt,Squarehead Frog Bolt,Thin Head Square Bolt

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