在农业发达国家如澳大利亚对有机农业已进行大量研究,在涉及土壤管理和有机添加物的使用方面获得大量研究经验和成果。在土壤管理方面,澳大利亚通过对土壤实施禁牧措施恢复土壤物理状态,通过采用短期(3年内)及长期(3-10年)两种不同时间跨度对土壤物理性质进行研究观察和分析,结果表明,土壤实施长期的禁牧和停止农业生产可以有效改善土壤物理性质,尤其是土壤中大于30μm的孔隙度因禁牧而大量出现,明显提高了土壤的排水和吸收能力。此外,澳大利亚对各种有机添加物的施用量和效果进行了较多研究,发现有机添加物可改善土壤耕作性能;结合有机农业的周边产业,将其副产品转化为有机添加物,实现废弃资源再利用。广西有机农业的发展起步于20世纪末,目前在土壤管理方面的研究仍有不足,有关有机添加物的研究尚未与周边产业结合进行。今后,在广西有机农业的土壤管理中,须开始或保持禁牧;有机农业公司与本土周边产业进行合作利用,将生产废弃物制成有机添加物,从而循环利用生产资源。
The organic agriculture in developed countries such as Australia has already obtained decades of ex- perience and research achievements, particular in soil management aspect and the application of organic amend- ments. Australian is carrying out grazing exclusion treatment in order to recover soil physical condition. Its studies were through a short-term of less than three years and a long-term of over three to up to ten years comparative observations, and the results clearly stated that the volume of macro pores, which has capabilities to drain water and liquid nutrients through the soil, occurred increasingly. This observation in fact provides reference value to soil management in terms of stop grazing and farming. In addition, the application of different organic amendments in Australian studies stated the improvement of soil cultivation capability, and Australian listed a number of organic amendments and linked them with peripheral industries' byproducts. In Guangxi, organic agriculture has been de- veloped since late 20th Century, but the research in soil management is deficiencies and the implementation of or- ganic amendments yet to be concerned with regional peripheral industries. In the future, organic business in Guangxi should begin or maintain grazing exclusion treatment to their soils. Constructing collaboration between or- ganic agriculture firms and their regional peripheral firms in Guangxi would be further studied.