Research On The Technical Specification Of Returning Feces From Livestock And Poultry Breeding To Field In Henan Province

Henan province is a aquaculture province,In recent years,the livestock and poultry breeding industry has developed rapidly,and a large number of breeding wastes have been produced.However,due to the weak awareness of pollution prevention and control of breeding practitioners and the lag of manure treatment and utilization technology of farms,the environmental problems caused by these problems are becoming increasingly serious.It is urgent to establish a technical standard system for the utilization of manure resources to standardize the return of livestock and poultry manure to the field,The utilization rate of manure returning to field should be improved.Therefore,through the methods of data access,field investigation and statistical analysis,supported by the relevant documents and technical specifications of the national manure treatment and return to field utilization,this study carried out the research on the technical specifications of livestock and poultry manure return to field utilization in Henan Province1.Based on the data analysis and field survey,it is concluded that the treatment and utilization modes of farm manure suitable for the regional characteristics of Henan Province mainly include storage + agricultural utilization,anaerobic treatment+ agricultural utilization and energy ecological type.According to the two key factors of farm scale and supporting farmland area,the farms in Henan Province are divided into seven types,The optimal treatment and utilization modes of different types of farm manure were determined.2.In Henan Province,the demand of nitrogen and phosphorus for agricultural planting is 266.52 t and 63.03 t respectively,and the production of nitrogen and phosphorus for livestock and poultry breeding is 115.63 t and 13.08 t respectively.According to the theory of nutrient balance,the carrying capacity of livestock and poultry in different main planting types of land in Henan Province was calculated quantitatively.Under the 10 planting patterns of wheat + corn,wheat + peanut,wheat+ rice,wheat + cotton,wheat + soybean,wheat + pepper,wheat + watermelon,corn +rape,single cropping rice and single cropping peanut,the farmland area per unit pig equivalent was 0.23,0.14,0.24,0.16 18,0.18,0.16,0.24,0.48 and 0.20 mu.3.In view of the key problems existing in the prevention and control of livestock and poultry breeding pollution in Henan Province,based on the national standard requirements and technical methods for livestock and poultry waste treatment,the construction requirements of facilities in each link of collection,treatment,storage,transportation and utilization were studied from the perspective of harmlessness and reduction by establishing a standardized mode of returning manure to the field,To form a set of technical specifications for livestock and poultry manure returning to the field,which is suitable for Henan Province,so as to present to the breeding practitioners in a more intuitive way and strengthen the practical operation of the policy.