Allocation Of Grassland And Livestock For Family Ranch In Agricultural-pastoral Areas

In this study,the family pasture of agriculture-pastoral area in Zhalute Banner of Tongliao was taken as the research example,and the basic parameters of models such as livestock,grassland,economy and meteorology were collected,using the model simulation to simulate the current situation of the local ranch,and analyzed the problems in the process of the current allocation of grassland resources,and realizing the optimal allocation of grassland and livestock for economic-ecological win-win through more suitable allocation adjustment of the existing local resources,in order to promote the development of local livestock industry,and to provide reference for the development of livestock industry in agriculture-pastoral area in China.The results show as follows.1.Grassland utilization is severe in the study area.Livestock energy surplus only occurs in July and August when the grass grows most vigorously,and in December and January when a large amount of supplementary feeding is carried out,and the remaining amount was shortage.Livestock energy is a little deficient in other months.2.It was found that with the increase of artificial grassland area,the total energy deficiency of livestock began to decrease,and the total energy surplus and methane emission of livestock began to increase.3.The optimal production model was used to simulate the income and expenditure of herdsmen under different livestock structure and different artificial grassland layout.The net income of sheep was the highest when all sheep were reared,which increased by 0.94 million yuan directly compared with the current situation.When 80%(2.5ha)artificial grassland was planted,the artificial grassland brough the greatest income for animal husbandry4.Comprehensive economic and ecological benefits as a whole,the optimum results are as follows:after eliminating all goats,raising sheep in all areas,planting 40%artificial grassland,60%cropland,the energy deficiency value of livestock is reduced by about 0.96MJ·SE-I·d-1,and the methane emission of livestock is reduced by 83.95 kg in the whole year.The net income of animal husbandry can be increased by 13.2 million yuan and the total income of ranch can be increased by 27.9 million yuan.