Abstract:

In order to study the feasibility of constructing the national level "Whole County-wide Promotion Project" for the resource utilization of livestock and poultry manure in Nan'an, the land carrying capacity of livestock and poultry manure was studied by analyzing the supply of manure nitrogen nutrients and the demand for nitrogen nutrients of crops based on the statistics of various crop yields and livestock storage in 2018. The results showed that the land carrying capacity of livestock and poultry manure was 659361 pig equivalent, which was 153758 pig equivalent more than the actual stock of livestock. Therefore, using the whole manure fertilizer in local area is feasible.

Key words: livestock and poultry manure, integrated crop-livestock production, circular agriculture, green development, land carrying capacity