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

目前，澳大利亚至少有5000万公顷的表土和2300万公顷的底土受到酸化的影响，由于正在进行的酸化过程，这一面积不断扩大。表施石灰在中和底土酸度方面无效。该项目将开发一种创新的方法，通过操纵植物吸收养分的平衡来刺激根的增殖并改善土壤的酸度。该方法将在不同土壤类型和气候条件下对养分利用效率、淋失和作物产量的影响进行量化。

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.