Corn straw cultivation of Coprinus comatus


Main materials: corn straw, bran, superphosphate, lime, urea, fine soil, etc.
Method: 3% bran, 1% calcium superphosphate, 2% lime, 0.2% urea and mix well. Choose fresh and mold-free corn straw and dry it. Depending on the water content of the corn straw, add water. The ratio is 1: (1 - 1.8). Take a piece of plastic film, depending on the height of the corn straw, the length depends on the amount of material. Spread the plastic sheet on the ground, place the corn straw on the end of the plastic sheet, the thickness is 20 cm, then spread the auxiliary material evenly on the corn straw, flip it slightly with your hand, and mix the auxiliary material with the corn straw. Then put a layer of corn straw and then spread the auxiliary. By analogy, after pushing 5-7 layers of corn straw, fold the plastic sheet and surround the fermentation. When the temperature reaches 65 °C, start to turn the corn straw, turn it over to the bottom, and turn it underneath. Above, then cover it again, and the pile is completed when the temperature reaches 65 °C.


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Double-plug cement head is a special tool for injecting cement slurry and releasing rubber plug. Can be installed with two rubber plugs at the same time, which can be used for both conventional double-plug cementing and continuous two-Stage Cementing operations. 1. Equipped with quick-fit joints, easy to connect, and can be connected with API long round buckle/short round buckle/partial trapezoid buckle, with a wide range of applications. 2. The double-balanced pipe structure makes the pressure at the upper and lower ends of the rubber plug the same when using the lower interface for cementing operations, eliminating the impact of negative pressure suction on the stop pin, and opening the stop pin is easy.
3. The double indicator structure accurately displays the passage of the rubber plug, which is convenient for the operator to judge.
4. The main body is made of thick-walled seamless pipe, which is resistant to high pressure and has a long service life.
5. The top cover and union nut adopt large pitch trapezoidal thread, which is convenient for disassembly and assembly.

Double Plug Cement Head

Cementing Tools Equipment,Double Floating Collar,Metallurgy Cement Head,API Floating Collar

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