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采用“3414+1”回归设计,在融安县石灰性稻田进行了超级稻施用氮、磷、钾、锌肥的效果试验。结果表明:氮、磷、钾肥合理搭配结合施用锌肥,可以显著提高超级稻的产量。通过建立模型和综合分析,最后选择以磷的一元二次肥效模型作为该地超级稻生产的推荐施肥模型,该模型提供的施肥参数为施纯氮210 kg/hm2、五氧化二磷72.7 kg/hm2、氧化钾210kg/hm2,超级稻理论最高产量为10429 kg/hm2。
Using the “3414 + 1” regression design, the effects of nitrogen, phosphorus, potassium and zinc fertilizer on the super rice were tested in calcareous paddy field of Rongan County. The results showed that the combination of nitrogen, phosphorus and potassium fertilizers with zinc fertilizer could significantly increase the yield of super rice. Through the establishment of the model and the comprehensive analysis, we choose the bivalent fertilizer model of phosphorus as the recommended fertilization model for super rice production. The model provides fertilization parameters of 210 kg / hm2 of pure nitrogen, 72.7 kg / hm2, potassium oxide 210kg / hm2, super rice theoretical maximum yield of 10429kg / hm2.