Straws of crops such as wheat straw and corn stalks are important sources of livestock feed. Many farmers are used to smashing straw to livestock, which is unscientific. Because the straw in the crop contains a lot of lignin, cellulose and hemicellulose, it is difficult to be digested and absorbed. If the straw is treated before use to hydrolyze and expand the cellulose, the absorption and utilization rate will be greatly improved. Several commonly used methods of alkalization are introduced as follows:
First, the caustic soda solution treatment method
The caustic soda is also called caustic soda. It is dissolved in 80-100 kg of water per 100 kg of straw, dissolved in 80-100 kg of water, and placed at room temperature for 8 to 10 hours. The pulverized straw can also be sprayed, moistened, mixed, and stacked with a caustic soda solution to form a block feed for long-term use.
Second, lime solution treatment method
For every 100 kg of mashed straw, use 12 kg of quicklime, add 200-300 kg of water, add 0.51 kg of salt, mix well and stack it on the concrete floor for 24~36 hours.
Third, mixed liquid treatment method
Spread the whole straw into a layer of 15~20 cm thick, spray 1.5% caustic soda and the same concentration of quicklime mixture to make the water content of the straw reach about 70%. After compaction, lay it layer by layer. Spray, spray 80 kg of mixed liquid per 100 kg of straw, and use it after 7 to 10 days of stacking.
Fourth, ammonia treatment method
The straw is first mashed and packed into a crucible for compaction. Then, according to each kilogram of straw, 12 kg of 25% ammonia aqueous solution or 19 kg of 15% ammonia aqueous solution is used, and the temperature inside the crucible is not lower than 20 ° C. After sealing and storage for 5 days, it is taken out and air-dried, and the ammonia smell can be used after disappearing.
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