本文重点讨论了水稻旱种土壤养分问题.主要阐明:水稻旱种与淹水种植土壤养分的区别、水稻体内三要素的变化、氮素利用状况以及水稻体内养分运转率的区别等.同时提出,水稻旱种与淹水种稻在氮素营养的来源方面差异较大.淹水种稻应增施有机肥料,培肥土壤,而水稻旱种应适当增施一些无机氮肥. This paper focuses on the issue of soil nutrients for dry cultivation of rice, mainly clarifying the difference of soil nutrients between inoculation and inundation, the changes of three elements in rice, the utilization of nitrogen and the nutrient utilization rate in rice, Rice cultivars and submerged paddy cultivars vary greatly in their sources of nitrogen nutrition, and organic fertilizers should be added to fertilize paddy soils, whereas inorganic fertilizers should be applied to dry cultivation in paddy soils.