随着国家西部大开发、退耕还林还草及农区禁牧政策的推行,大力引进、试验、示范、推广优良牧草种植,发展农区畜牧业,对于改善生存环境,防止水上流失,维持生态平衡具有极其重要的作用。现介绍几个优良 With the implementation of the national western development, the implementation of the policy of returning farmland to forestland and grazing ban in rural areas, vigorously introduce, test, demonstrate and promote good forage grazing and develop animal husbandry in the farming areas, improve the living environment, prevent water loss and maintain the ecology Balance has an extremely important role. Now introduce a few good