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一、牧草收获和加工的必要性和市场需求我国有广阔的天然草原4亿hm2(折合60亿亩)其中人工草地占1.7%,近年来配合西部大开发和改善生态环境在全国范围推行退耕还草,因此牧草的种植面积迅速扩大,2003年全国苜蓿播种面积已达3200余万亩。人工草地每公顷可产4500kg干草(折合每亩300kg)天然草场平均亩产干草30-50kg,人
I. The Necessity and Market Needs of Forage Harvesting and Processing China has a vast natural grassland of 400 million hm2 (equivalent to 6 billion mu) of which artificial grassland accounts for 1.7%. In recent years, in line with the large-scale development of the western region and the improvement of ecological environment, Therefore, the planting area of pasture rapidly expanded. In 2003, the sown area of alfalfa reached more than 3,200 mu. Artificial grassland can produce 4500kg of hay per hectare (equivalent to 300kg per mu) Natural grassland average yield hay 30-50kg, person