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本研究采用３因素５水平最优设计得出东乡红壤丘陵区中低产稻田的主要限制因子为钾，其次是氮。肥料优化投入方案为每公顷７７．８５～９４．５ｋｇＮ、４４．２５～５５．５ｋｇＰ＿２Ｏ＿６、１５０．６～１７０．４ｋｇＫ＿２Ｏ，并结合江西省长期定位试验结果，提出配以３０％有机肥，为持续稳产、高产打下基础。
In this study, the optimal design of 3 factors and 5 levels led to the conclusion that the main limiting factor for middle and low-yield paddy fields in Dongxiang hilly red soil was potassium, followed by nitrogen. The optimized plan of fertilizer was 77.85 ~ 94.5kgN, 44.25 ~ 55.5kgP_2O_6 and 150.6 ~ 170.4kgK_2O per hectare, and combined with the long-term positioning test results of Jiangxi Province, it was proposed that with 30% organic fertilizer, Stable production, high-yield lay the foundation.