关键词: 农牧交错带, 种草养畜, 奶牛, 成本收益分析

Abstract: In order to provide the basis for the configuration adjustment of agriculture and animal husbandry by local farmer and government,the costs and benefits of cultivating forage to raise livestock were evaluated based on the survey and data collection on the spot in Saibei precinct of Zhangjiakou city,a typical region of the farming-pastoral zone.The results show: 1.Net benefit-cost ratio of the main forage grasses and feed crops varied from 45.2% to 125.1% with the priority of silage corn>highland barley>gramineous grass≥leguminous grass;2.The production costs of silage corn were 44.4% to 59.1% of their purchased price,and those of the perennial forage grass were 48.6% to 68.9%;3.The mostly limiting factor was lack of funds and raw materials for benefit amplification of silage corn production;4.In the mode of ’all-time pen feeding’,the net benefit of dairy cattle raising with annual milk production from 4550 to 6300 kg/cow were-86.5 to 1544.2 RMB/cow,the net benefit-cost ratios were-1.1% to 15.5%,and the profit and loss critical milk production were 4588.1 to 4789.8 kg/cow;5.In the mode of ’pen feeding+warm-season grazing’,the net benefits from cultivating forage to raise dairy cattle with annual milk production of 4550 to 6300 kg/cow were 1453.6 to 3435.2 RMB/cow,above 51.0% of whose net benefits derived from forage cultivation,the net benefit-cost ratios were 22.7 to 42.5%,and the profit and loss critical milk production were 2850.0 to 3182.8 kg/cow.

Key words: Farming-pastoral zone, Livestock raising based on forage cultivation, Dairy cattle, Cost and benefit analysis