Nitrogen (N) deficiency is the single biggest cause of the yield gap in Australian wheat production. Nitrogen fertiliser is a costly input and prediction of crop seasonal demand for N in Australia’s variable climate is difficult, so farmers are conservative with investment in N fertiliser, leading to under-fertilisation and over reliance on soil organic N.

中文翻译：

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氮肥决策系统在半干旱环境中以有利可图的方式缩小粮食产量差距的比较


氮 （N） 缺乏是澳大利亚小麦生产产量差距的最大原因。氮肥是一种昂贵的投入，在澳大利亚多变的气候中，很难预测作物对氮的季节性需求，因此农民对氮肥的投资持保守态度，导致施肥不足和对土壤有机氮的过度依赖。