Quantitative allocation analysis of “raising by planting” in the mountain’s system combining fruits and poultry in headwaters of Dongjiang River

[目的]促进东江源区果畜结合系统的养分循环利用，控制生猪养殖和脐橙种植产生的面源污染。[方法]以江西省定南县龙塘镇杏林农庄“猪-沼-果-鱼”生态农业模式为研究对象，在分析畜禽养殖粪尿排泄量与利用量的基础上，针对果园“养猪-沼气-果树-养鱼”四位一体的物质循环和能量梯级利用运行模式，对“以种定养”进行了定量化分析。[结果]基于果树对养分N的需求，一亩脐橙园可承载的生猪为2.72头，配套建设沼气池1.88 m3，可培养浮萍 1 166.67 kg，鱼塘可套养草鱼25.57条；一亩温柑园可承载的生猪为1.96头，配套建设沼气池1.35 m3，可培养浮萍841.53 kg，可套养草鱼18.44条。[结论]该研究结果为在东江源区推广种养结合模式时匹配“猪-沼-果-鱼”间的量化关系提供了重要的科学参考依据。 [Objective] The aim was to promote nutrient cycling and utilization in the mountain’s system combining fruits and poultry and to control non-point source pollution produced from swine raising and navel orange planting in headwaters of Dongjiang River. [Method] The quantitative analysis was mainly conducted for the so called “raising by planting” which is about material cycle in “pig-methane-fruit-fish” model and energy cascade utilization, based on relationship between excreted amount by livestock and the utilized quantity in Xinlin Farm in Longtang Town, Dingnan County, Jiangxi Province. [Result] Considering N requirement by fruit trees, a navel orange orchard (