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在应用Ｈｕｎｔｅｒ网（温）室研究法明确广东不同类型水稻土养分限制因子的基础上，进行了相应土壤的中微量元素限制因子大田定性效应试验和有效限制因子的多因素水平的定量化指标研究。结果表明，５种代表性水稻土的回归方程具有生产的实用性，可预测最佳产量和选择最佳肥料的配方，广东水稻土中微量元素的最佳施肥量为每亩锌肥０．８３ｋｇ、镁肥５．９１ｋｇ、铜肥０．１８ｋｇ、硼肥０．３０ｋｇ，电脑推荐氮磷钾加施锌、镁、铜、硼的稻谷产量比电脑推荐氮磷钾分别增产１１．２８％、１５．２４％、９．４８％、１３．１９％和５．８２％，与最高施肥量所得的产量相近，但施肥量相对减少，肥料的产投比相应提高。
Based on the study of nutrient limitation factors of different types of paddy soils in Guangdong by using Hunter net (warm) chamber method, the qualitative and quantitative determinants of multifactorial levels of soil available trace elements . The results showed that the regression equations of the five representative paddy soils had the practicality of production, the best yield and the best choice of fertilizers. The optimum amount of trace elements in paddy soils in Guangdong was 0.83kg , 5.91 kg of magnesium fertilizer, 0.18 kg of copper fertilizer and 0.30 kg of boron fertilizer. The computers recommended that the yield of paddy with nitrogen, phosphorus, potassium and zinc, magnesium, copper and boron increase by 11.28% .24%, 9.48%, 13.19% and 5.82%, respectively, which were similar to those of the highest fertilization, but the relative decrease of fertilization and the corresponding increase of fertilizers’ yields.