The productivity of artificial grassland is relatively high. Most of the artificial grassland is used to modulate green hay from the 6th to the 9th month of forage grass. The processing technology is mainly used:
Field drying method: It is characterized by the first flat exposure, after a small pile of dry. After harvesting, the forage grass is exposed and exposed in the dry place in or near the place, and it is sun-dried every few hours. When the water content is reduced to about 50%, it can be piled into small piles that are 1 meter high and the grass can be piled in small piles. Dry inside. When the weather is fine, weeds spread in the early morning and can be stacked in the evening. When the weather is bad, it is best to put a plastic sheet on the outside of the haystack to prevent rain showers. When the weather is fine, it can be stacked until it is dry.
Straw drying method: that is, take a number of grass frame, when the pasture is drying in the field for half a day or one day, when the water drops to 45%~50%, the pasture is put on the shelf. Due to the hollowness of the middle of the grass frame, air can be circulated, which is beneficial to the loss of pasture water, greatly increasing the drying speed of pasture and reducing the loss of various nutrients. When stacking pastures, they should be stacked layer by layer from the bottom up. The top of the grass is down. It is best to lay the grass and put it on the grass rack. The lowest layer of pasture should be 20~30 cm higher than the ground, and the thickness of the grass layer should not be suitable. More than 70 to 80 centimeters. The pastures on the shelves should be stacked in a conical or roof shape, and should be smooth and reduce the infiltration of rainwater. Grass racks can be made from trunks or sticks, or they can be wire or triangles or rectangles. The size of the shelf is determined by the size of the harvesting field and the level of pasture production, which can vary.
Fermentation drying method: This method is a special drying method between the modulation of hay and silage. The principle is that dried grasses (about 50% of water content) are accumulated, and the respiration heat of the cells of the grass itself and the heat of fermentation caused by bacteria and mold activity are accumulated in the forage stack (sometimes the temperature of the haystack is up to 70~80°C). At the same time, the water in the forage is evaporated by drying to dry it. Because of this method, the loss of nutrients in forage grass is more, so this method is mostly used when rainy days are the last resort. The technical key points are: The castrated grasses are sun-dried on the ground or air-dried on the grass frame, so that the fresh grasses are withered. When the moisture content is reduced to 50%, they are piled into 3-6-meter-high grass piles. Should be more trample, and strive to tighten, so that the withered grass on the haystack fermentation of 6 to 8 weeks, the grass gradually dry brown hay. In order to prevent over-fermentation, each grass can be sprinkled with about 0.5% to 1.0% salt.
Stacking and Storage of Green Hay: After the hay is prepared, it must be stacked and stored in time to prevent loss. The water content of stored hay in the stack must not exceed 18%, otherwise it is easy to mold and rot. In addition, weeds should be solid and uniform, and we should minimize the area affected by rain.
The hay should be stored in a special shed. However, due to the large amount of storage of hay in production, most of them are open-air stacking. The site should be flat, dry, well drained and not far from the barn. At the end of the raft, stones, wood, straw, etc. are used to pave the floor, about 40-50 cm above the ground, and drained around the ditches. Grasshoppers are mostly round and rectangular, and they should gradually expand from the bottom up to the top and then gradually shrink into a dome to form the shape of the bottom narrow, middle and large, and round. Grasshoppers are generally 4 to 5 meters in diameter and 6 to 7 meters in height; rectangles are generally 4 to 5 meters wide, 6 to 7 meters high and 8 to 10 meters long. In the middle of the bottom of the raft, stacking stones of 30-60 centimeters in height are placed on top of the raft. Layers are placed in layers. Each layer is covered with grass from the outside, making it a slightly lower outer arch, with an arch in the middle. Each layer is about 30~ 60 cm thick. After the grasshoppers are piled up to a certain extent, they are expanded and shrunk to form a dome. After they have been stacked, move them forward until they are all piled up. Drying weeds and wheat straw are generally used to cover the top and should be pressed layer by layer. Dome can not have depressions and cracks. Grass ridge top ridges must be firmly sealed with straw ropes or mud to prevent wind blows.
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