沙田柚系列专用肥对柚果产量和品质的影响

Effects of Special-Purpose Fertilizer Series for Citrus Grandis on Yield and Fruit Quality

报道了沙田柚产区土壤养分状况、沙田柚营养需求特性和叶片与果实对营养元素吸收的季节性变化模式、沙田柚果实品质指标与各时期树体营养元素含量的相关性，以及磷肥活化剂的使用。分析了沙田柚产量和品质提高的因素。研制出了沙田柚系列专用肥，并探讨了其使用的效果和经济效益。

This paper reports the soil nutrient, nutrition requirement characteristics of Citrus grandis, seasonal change model of nutrient element absorption by leaf and fruit, relationship between fruit quality index and nutrient element concentration in trees in various periods, as well as the application of phosphorus activation-matter. Finally, the economic benefit of the special-purpose fertilizer series for Citrus grandis is also discussed.