Combating subsoil acidity for sustainable production through managing plant cation-anion uptake

通过管理植物阳离子-阴离子吸收来对抗底土酸性，实现可持续生产

• 批准号: LP0562504
• 负责人: Prof Caixian Tang
• 金额: $ 17.69万
• 依托单位: La Trobe University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2006
• 资助国家: 澳大利亚
• 起止时间: 2006-02-28 至 2010-12-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0562504
• 关键词: Combating; subsoil; acidity; sustainable; production

At least 50 million hectares of topsoil and 23 million ha of subsoil of Australian land are presently affected by acidity, with this area expanding due to the ongoing processes of acidification. Surface liming is ineffective in neutralizing subsoil acidity. The project will develop an innovative method that stimulates root proliferation and ameliorates subsoil acidity through manipulating the balance of nutrient uptake by plants. The effects of the developed method on nutrient use efficiency and leaching loss, and crop yields will be quantified under different soil types and climatic conditions.

目前，澳大利亚至少有5 000万公顷的表土和2 300万公顷的底土受到酸度的影响，由于正在进行的酸化过程，这一面积正在扩大。表面施石灰对中和底土的酸性是无效的。该项目将开发一种创新方法，通过控制植物养分吸收的平衡来刺激根系增殖和改善底土酸度。将在不同土壤类型和气候条件下量化所开发的方法对养分利用效率和淋失以及作物产量的影响。