杂交水稻特优多系1号播插适期的初步研究

Suitable sowing and transplanting periods of hybrid rice Teyouduoxi 1

通过对特优多系 1号分期播种试验 ,考察该组合的生育期、经济性状、叶面积、干物重等性状 ,分析该组合在早、晚季栽培季节的适应性和播插适期。试验结果表明 ,其作早稻种植季节适应性较广 ,漳州地区可在 2月中旬开始播种 ,4月上旬前后栽插 ,秧龄在 45 d以内为宜 ;晚季种植夏季高温易使其营养生长期缩短 ,一般掌握在 8月上旬栽插 ,以秧龄 2 0 d,不超过 2 5 d来确定播插期。同时要注意秧龄较长的须多插基本苗 ,以保证足够穗数达到高产。

Based on the interval sowing trial for Teyouduoxi 1, its growing period,economic feature,leaf area,dry weight ect was observed,and its adaptability and suitable seeding time in early and late season was analysed.The test proved that Teyouduoxi 1 had broad adaptability in its early season.It began to be sowed in the middle Feb.and transplanted in the early April. The seedling age was better to be controlled within 45 days.In later season,the vegetative growth would be shortened because of high temperature in summer.So the suitable transplanting time was selected in the early Aug.,but the rice seedling age ranging from 20 to 25 days was better.In order to get enough number of panicle for high yield,the more high basic seedling number should be planted for older seedlings.