Research On Given Potential Of N?P In Hebei Province Based On The Combination Of Planting And Breeding

Livestock and poultry breeding environment problem is common problem faced by developed countries and developing countries,one of the livestock and poultry waste treatment is a worldwide problem,which is also a very important problem in China,when we are on the road of developing the low carbon agriculture.Livestock and poultry feed consumption need to have a certain scale of aquaculture farming output to safeguard,livestock and poultry pollution emission need to have a certain scale of planting industry to given.Land is not only the necessary conditions for the development of planting industry,also the important carrier of poultry and animal feces given,land to measure the amount of nutrient loss is the basis of livestock and poultry breeding industry development,which is also the standard of judging ability of land given.Planting and breeding is the combination of circular agriculture development,significant approach to ensure the sustainable utilization of land resources,and judgment on the basis of combining with planting and raising the level of soil nutrient loss is the basis of developing ecological agriculture,circular agriculture.Nutrients of N?P is presented in this paper,on the basis of comparative analysis of supply and demand theory research,the contents of livestock and poultry breeding discharge,fertilizer,content of soil as a source of nutrient supply,crop demand as the main way of nutrient given,from the unit area of farmland of N and P fertilization strength,given strength potential,given the potential of 11 cities in hebei province a comparative study of N,P given conditions,the following conclusions:(1)From the perspective of application of strength,according to the regulations of the EU policy,the province around the city of farmland P fertilization intensity per unit area is beyond policy;Farmland N fertilization intensity per unit area differences,langfang,baoding,hengshui,xingtai,zhangjiakou,cangzhou is less than the policy regulation,shijiazhuang,tangshan,chengde,handan,qinhuangdao beyond policy.(2)From the given strength potential perspective,the province farmland per unit area around the city of N and P supply were greater than crops given ability,extendsbeyond crops given ability,given strength in all potential state,but overweight little differences among regions.(3)From a given amount of potential perspective,the province farmland N,P loss quantity measuring surplus,namely agricultural land were greater than the crops of nitrogen and phosphorus supply given quantity of farmland has not given more around the city of livestock and poultry breeding discharge nitrogen,phosphorus and nitrogen and phosphorus fertilizer amount of potential,and excess obvious differences around the city.Land is necessary for our survival,and is also the basis to realize the sustainable development of agriculture.Farmland in hebei province N and P fertilization intensity is too large,beyond the given capacity,causing serious pollution of land,threatening the development of human society.Therefore,this article from the reasonable fertilization,livestock and poultry breeding science,ecological agriculture structure adjustment countermeasures and Suggestions,to promote healthy and sustainable development of ecological agriculture.