随着化肥的普遍施用和高产耐钾品种的推广,尤其是杂交水稻的发展推动了钾肥的应用研究,有的甚至把施用钾肥作为杂交水稻高产栽培的重要措施。目前,我国的钾肥大部分是靠进口,如何经济、合理施用钾肥仍有深入研究的必要。为此,我们应用放射性核素(86)~Rb示踪,并结合其他分析方法进行了杂交稻钾素营养的研究,以探明杂交稻各生育时期的吸钾特点以及对钾肥肥效的反应,为正确施用钾肥提供科学依据。 With the widespread application of chemical fertilizers and the promotion of high yield potassium tolerant varieties, the development of hybrid rice in particular has promoted the application of potash fertilizer, and some even used potassium fertilizer as an important measure for high yielding cultivation of hybrid rice. At present, most of China’s potash is imported, how to economy, rational use of potash is still necessary for further research. To this end, we used radionuclide (86) ~ Rb tracer, and combined with other analytical methods of hybrid rice potassium nutrition in order to explore the hybrid rice growth characteristics of potassium and potassium fertilizer response, Provide the scientific basis for the correct application of potassium fertilizer.