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(活力中国调研行)“变废为宝”:江西猪场粪污的“绿色新生”
Zhong Guo Xin Wen Wang· 2025-07-10 05:11
Core Viewpoint - The article highlights the successful implementation of the "N2N" agricultural recycling model in Jiangxi Province, transforming pig manure and straw into valuable resources for energy and soil improvement, thereby benefiting local farmers and promoting environmental sustainability [1][5]. Group 1: N2N Model Overview - The "N2N" model focuses on large-scale biogas projects and organic fertilizer production, linking upstream livestock farms and downstream agricultural enterprises to create a resource recycling system for agricultural waste [3]. - The process involves three main steps: centralized waste collection from 142 pig farms producing 600,000 pigs annually, conversion of waste into electricity, biogas, and organic fertilizer through fermentation and composting, and finally returning the resources to the fields [3][4]. Group 2: Benefits to Farmers - Farmers like Liu Weiliang report significant cost savings, with annual expenses for waste management reduced by 50,000 RMB due to the services provided by the ecological agriculture company [4]. - Rice farmer Liu Daigen benefits from selling straw to the company and purchasing organic fertilizer, effectively making the fertilizer cost-neutral while increasing rice yields [4]. - Citrus growers, such as He Cheng, note that organic fertilizer improves soil moisture and quality, leading to a 20% to 30% reduction in fertilizer costs and a 5% to 8% increase in yield [4]. Group 3: Policy and Recognition - The "N2N" model aligns with China's agricultural green development goals, as outlined in the "14th Five-Year" national agricultural green development plan, which emphasizes the resource utilization of livestock waste and straw [4]. - The model has been recognized as a national example of green circular agriculture and included in the national ecological civilization pilot reform initiatives by the National Development and Reform Commission [5].