为了探明土壤调理剂对酸化稻田土壤理化性状及连作晚稻产量的影响效应，挖掘甬优538高产潜力，设置了土壤调理剂32%氨基质钙镁肥不同用量试验。结果表明， 施用土壤调理剂对甬优538有明显增产效应，其中每hm2施600 kg、900 kg、1 125 kg的处理比未施用对照增产8.31%~9.52%，达显著水平；其增产效应主要在于增加有效穗数和提高千粒重；施用土壤调理剂还能有效改善酸化稻田土壤理化性状，促进碱解氮、有效磷及速效钾的释放利用和有机质提升。通过一系列数学关系模型分析后发现，在生产上土壤调理剂施用量以600~900 kg/hm2为宜。

In order to find out the effects of soil conditioner on soil physical-chemical properties and the yield of continuous cropping late rice, exploit high yield potential of Yongyou 538, the 32% soil conditioner application amount experiment was carried out. The results showed that the yield of Yongyou 538 was accelerated with the increase of soil conditioner application, about 8.31% to 9.52%. The soil conditioners not only improved the chemical and physical properties of acid soil, increased the soil available organic, nitrogen, phosphous and ptotassium, but also increased the effective panicles and 1 000-grain weight. The suitable amount of acid soil conditioner is 600~900 kg/hm2.