关键词: 常规粳稻, 安徽沿江稻区, 特征特性, 高产栽培技术

Abstract: Field experiment was carried out to explore the characteristics of japonica rice in Tongcheng City along the Yangtze River in Anhui Province in 2010 to 2015, using indica hybrid rice, japonica hybrid rice, conventional indica rice as control. The results showed that conventional japonica rice has the characteristics of dwarf and strong stem, straight and short leaves, short and erect spikes; compared with conventional indica rice, conventional japonica rice showed strong photosensitivity, weak tillering rate, high spike rate, late flowering, sensitive to high temperature at booting stage and heading stage, and higher fertilizer tolerance at late stage. The effects of different sowing date on economic traits of conventional japonica rice were mainly on effective panicles and total grains per panicle, and had little effects on seed setting rate and 1 000-grain weight. With the delay of sowing date, the biology yield was decreased and the harvest index was increased. In brief, the dominant conventional japonica rice varieties along the Yangtze River in Anhui Province were sowing in late May, heading in late August or early September, and the high yield cultivation techniques were suggested in this paper.

Key words: conventional japonica rice, rice region along the Yangtze River in Anhui Province, characteristics, high yield cultivation techniques