杂交水稻种子纯度海南田间种植鉴定（南鉴）是国家标准规定、纯度鉴定最常用的方法，对保障杂交水稻生产安全意义重大。本文回顾了江苏杂交水稻南鉴的历程，阐述了南鉴现状、取得的成效、当前存在的薄弱环节及应采取的关键措施，并讨论了江苏杂交水稻南鉴未来发展的趋势。

Purity identification of field planting in Hainan （PIFPHN） is the most commonly used method for purity identification stipulated by national standards, which is of great significance to ensure the safety of hybrid rice seed production. This paper not only reviewed the history of hybrid rice PIFPHN of Jiangsu province, but also expounded the present situation, achievements, weaknesses and key measures of PIFPHN, and discussed the future development trend of hybrid rice PIFPHN of Jiangsu province .