There are five commonly used perennial forage pasture safety management measures: First, timely harvest to determine the harvest period of perennial forage, not only to consider the yield and quality of pasture, but also consider overwintering in favor of pasture. Under normal circumstances, the growth period of more than one month after harvest should be conducive to the safe wintering of perennial forage. Second, a reasonable height of stubble remaining stubble when harvesting the last year of the year, a direct impact on the growth rate of regenerative grass. Stay high, regeneration speed is fast, otherwise slow. The remaining height of the last rush is directly proportional to the wintering rate of the perennial pasture. However, excessive stubble will affect the grass yield of the former valerian. Therefore, the height of stubble harvested before the perennial pasture is overwintering should be between 5 and 10 cm. Third, the "Mongolia headland soil" For the ridge cultivation of perennial grass, can be used to improve the overwintering rate of forage grass. The method is to use machinery for bauxite before freezing and control the depth of the cover soil by adjusting the speed of the traction machine. The use of this method should pay attention to the following two aspects: 1. Time: Generally, it should be carried out within 10 days before freezing. 2, cover soil depth: should be about 5 cm, too deep will affect the return of green grass in the coming year. Fourth, pouring seal frozen before pouring frozen frozen water, can improve the survival rate of overwintering pasture more than 30%. Fifth, the cover is suitable for overwinter protection of small areas of pasture. It can be adapted to local conditions. Covering about 10 cm thick straw, straw, etc., on the perennial grass planting plots, and clearing the coverings in time before returning green grasses in the next year can effectively increase the overwintering rate of pastures.
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