Unravelling the links between plant transpiration, soil water and nitrate movement: impact of high atmospheric CO2 and irrigation strategy.

澳大利亚严重的环境问题，土壤盐分和酸度，可能会受到大气中二氧化碳含量上升和灌溉策略的极大影响。 如果土壤水分和硝酸盐的运动随蒸腾作用而改变，就会发生这种情况。 我们将通过改变牧场上方的大气CO2和葡萄园的灌溉策略来产生不同的蒸腾速率。 该商业合作伙伴新开发的土壤传感器首次实现了土壤水分和硝酸盐的实时三维测量。 研究结果将回答长期存在的问题，即蒸腾速率对植物氮吸收的影响，并为牧场和园艺作物的可持续管理提供有价值的新知识。

Australia's serious environmental problems, soil salinity and acidity, may be greatly affected by rising atmospheric CO2 and irrigation strategies. This will occur if the movement of soil water and nitrate changes with transpiration. We will generate different transpiration rates by varying atmospheric CO2 above pastures and irrigation strategies in vineyards. The commercial partner's newly developed soil sensors allow, for the first time, simultaneous 3-D measurement of soil water and nitrate in real-time. The results will answer long-standing questions about impacts of transpiration rates on plant nitrogen uptake and generate valuable new knowledge for sustainable management of pastures and horticultural crops.