以无氮条件(侧行施肥预定水田)的耙整土壤为供试土壤,就包括干土效应在内的迅速推测水稻生育前期土壤矿化氮量方法进行了研究。结果表明,恒温培养氮量以及用磷酸缓冲液提取的全氮量可作为其有效指标。本方法,对水稻施肥管理及生育预测具有重要意义。 The raking soil with no nitrogen fertilizer (paddy fields scheduled for paddy field) was used as test soil, and the method of quickly estimating soil mineralized nitrogen in early rice growth stage was studied, including dry soil effect. The results showed that the amount of nitrogen and the amount of total nitrogen extracted with phosphate buffer could be used as effective indicators. This method is of great significance to rice fertilization management and fertility prediction.