本文阐述了近年生物钾肥寻求和应用的简况。分析了稻草回田的供钾特点、施用方法和钾素肥效,概述了水花生、水浮莲、红萍等水生绿肥的富钾能力和特点,以及生物钾肥对水稻生长的有效性,比较了几种生物钾肥的施用方法及其供钾效益。本文对生物钾肥开发与应用提出看法和建议,并讨论了今后寻求富钾植物的潜力和可能的途径。 This article describes the recent bio-potash seek and application of the brief. The potassium supply characteristic, application method and potassium fertilizer efficiency of rice straw returning field were analyzed. The potassium enrichment ability and characteristics of aquatic green manure such as peanut, water lettuce and rhizome were summarized, and the effectiveness of biological potassium fertilizer on rice growth was compared. Application Methods of Several Biological Potassium Fertilizers and Their Potassium Supply. In this paper, opinions and suggestions on the development and application of bio-potash fertilizer are put forward, and the potential and possible ways of seeking potassium-rich plant in the future are discussed.