Timely cutting and storage of pasture

Timely castrated pastures can be fed on a green basis and dried hay and silage can also be used to prepare for winter and spring feed shortages. Different grasses produce at different growth stages and their quality varies greatly. Taking alfalfa as an example, the content of crude protein and crude fiber in dry matter, the vegetative growth period was 26.1% and 17.2%, the budding period was 22.1% and 23.6%, the flowering period was 18.2% and 18.5%. For 12.3% and 40.6%, it can be seen that with the extension of the growth stage, the crude protein content gradually decreased, while the domestic animals did not absorb the digested crude fiber significantly. However, if the castration is too early, the yield is low. Therefore, it is necessary to determine the most appropriate period of castration. Determine the optimum cutting period, that is, not simply based on the yield, but also on the quality, but the two should be combined, must be based on the amount of nutrients within the unit area to determine. In general, leguminous pastures can obtain the highest nutrient content per unit area from flower buds to early flowering stages. At the same time, in terms of perennial forage, cutting is not only a product harvest but also a field management measure. Due to the appropriate cut time. Whether it is suitable or not has a great influence on the growth of pasture. The number of cuttings should be based on the biological characteristics of pasture, climate conditions in different regions, and the level of cultivation and management techniques. The last time before the winter can not be castrated too late, there must be sufficient regeneration time to allow plants to accumulate enough nutrients to improve the ability of the roots to resist cold and safely winter. Should generally be carried out 3-4 weeks before winter. The height of stubble must also vary according to pasture. If 苜蓿 茬 4-5 cm is appropriate. In addition to the use of cultivated pastures, they are mainly used to prepare hay or silage for use in winter and spring. High-quality hay has high nutritional value, good palatability, and all kinds of livestock prefer eating. Storage of large amounts of hay can guarantee the nutritional needs of livestock in winter and spring. The dry speeds of stems and leaves of grasses are relatively uniform and relatively easy to dry. The stems and leaves of leguminous pasture have different drying time. The leaves are drying fast and the stems are drying slowly. They often lose a lot of leaves during the drying process and reduce the nutritional value of hay. Drying hay should first consider the local climatic conditions, to select the sunny dry season. After the castration, it is leveled on the ground. After a sunny day, the leaves are withered and the water content is about 45-50%. The haystack is about 1 meter high. After 2-3 days, when the hay can be twisted into the straw rope, When it is not cracked, it will have dropped to about 20% of water content and can be transported back to the nearby stockyard for storage. However, at this time, the moisture content of pasture is unsafe, and it should be promptly ventilated and cooled in the wet weather. The drying process must avoid rain, mildew, to ensure the quality of hay. After stacking, special attention should be paid to the grasshoppers not being infiltrated by water so that the hay rots and molds. China Agricultural Network Editor