有机肥料是保持和提高土壤肥力的重要物质基础,它是土壤有机质最主要的来源,同时又是作物养分,特别是氮素的补给源。在这方面前人已作了不少的研究。可是对有机肥料中钾的回收利用却注意不够。据日本报道:厩肥中钾的利用率约为90—70％,稿秆直接还田,钾素的回收率达90％。为了解决我省钾肥不足,本文主要探讨水田施用不同的有机肥钾素回收利用的情况。 Organic fertilizer is an important material basis for maintaining and improving soil fertility. It is the most important source of soil organic matter, and is also the supply of crop nutrients, especially nitrogen. In this regard, many studies have been made by our predecessors. However, the recovery of potassium in organic fertilizer is not enough attention. According to reports from Japan: The utilization rate of potassium in manure is about 90-70%. The straw is returned directly to the soil and the recovery rate of potassium reaches 90%. In order to solve the lack of potash fertilizer in our province, this paper mainly discusses the recovery and utilization of different organic fertilizer potassium in paddy fields.