How to store corn stalks? We want to know how to do it.
Key points of straw micro-storage operation:
1, straw processing and crushing treatment
Straw used for micro storage must be free from mildew, deterioration and pollution. When fermenting in the pit, the sheep is cut into 3 ~ 5cm and the cattle into 5 ~ 8cm, which is convenient for compaction, improves the utilization rate of the pit and ensures the production quality. Straw fermented in plastic bags needs to be broken to 0.5 ~ 1 cm. Convenient compaction, improving space utilization, better ensuring anaerobic sealed fermentation and improving material quality.
2. Preparation of Nongshengle straw fermentation broth
Prepare enough Nongshengle feed fermentation broth in proportion, and dilute it with proper warm water (1 kg straw fermentation broth with 400-500 kg corn straw).
3, material moisture control
Whether the moisture content of micro-storage feed is appropriate is one of the important conditions to determine the quality of silage. Therefore, it is necessary to check whether the moisture content of straw is appropriate and uniform at any time during spraying and compaction, and pay attention to the moisture cohesion between layers, so that no dry layer can appear. Test method of water content: grab the straw sample and twist it with both hands. If there is water dripping down, its water content is above 80%. If there is no dripping water, it is obvious that the water content on your hands is about 60%. If there is water on your hand (reflecting light), it is about 50-55%. Feel about 40-50% wet on your hands; The humidity shall not be lower than 40%.
4. Layered loading: lay a layer of plastic cloth at the bottom and around the cellar, and then lay straw, each layer is 30cm. Sprinkle corn flour, barley flour or wheat bran evenly in layers according to 0.5% of the weight of dry straw to provide certain nutrition for probiotics in the initial stage of fermentation. The specific gravity of wheat straw is 100kg/m3, and that of dry corn straw is 1 10kg/m3. Spray the water and diluent of Nongshengle straw fermentation liquid in layers as evenly as possible, and there shall be no dry layer at the fingertips of each layer. Layered compaction, reduce material gap, try to achieve sealed anaerobic fermentation.
5. Cover and seal the cellar
Fill the pit layer by layer until it is 40 ~ 50 cm above the pit surface. After filling, sprinkle a layer of salt evenly on it, and the dosage is 250g/m3. Then, completely compress the seal. Cover with plastic sheets, then cover with 20 ~ 30cm thick dry straw, and cover with15 ~ 20cm soil.
6. Management of straw fermentation process
After the straw is slightly stored, the materials in the cellar will slowly sink, so it is necessary to cover the soil in time to make it higher than the ground, and dig a drainage ditch about one meter away from the cellar to prevent rainwater from penetrating. Always check in the future. When cracks appear on the top of the cellar, cover the soil and tamp it in time to prevent air leakage and rainwater infiltration. It is best to build a rain-proof shed above the pit to avoid material deterioration caused by rainwater infiltration.
7, quality standards
The cellar was sealed for 2 1 day in high temperature season, and the micro-storage fermentation was completed after 30 days in low temperature season, and the cellar was opened for quality inspection.
Handle: The high-quality micro-stored feed feels loose in your hand, and the texture is soft and moist. Sticky or sticky, loose, but dry and hard are all bad feeds.
Look: the color of high-quality silage green corn stalk feed is olive green. If it is brown or dark green, the quality is poor.
Smell: High-quality feed has mellow fruity aroma and slight sour taste. If there is a strong sour taste, it means that too much acetic acid is caused by too much water and high temperature fermentation. If it is rancid and moldy, it can't be fed.