荆门地区节水耐旱水稻品种播期试验

Sowing Dates Study of Water-saving and Drought-resistance Rice Varieties in Jingmen Area

荆门市属于亚热带季风气候,近年来,农业气象灾害特别是高温干旱天气频发,对水稻生产造成了一定的影响。本研究以节水耐旱水稻品种旱优3号、旱优116作为试验材料,研究不同播期对其生育期、穗粒性状、产量等的影响。结果表明:随着播期的推迟,两个品种全生育期相应缩短,结实率也相应下降;两个品种均为中穗型品种,着粒均较稠密,分蘖力均为中等;产量方面,旱优3号以5月24日播期处理最高(9247.5 kg/hm^(2)),旱优116以5月29日播期处理最高(9967.5 kg/hm^(2))。

Jingmen City has a subtropical monsoon climate,and agrometeorological disasters,especially high temperature and drought occurred frequently in recent years,which had a certain impact on rice production.This paper used water-saving and drought-resistance rice varieties Hanyou 3 and Hanyou 116 as experimental materials to study the effects of different sowing dates on their growth period,panicle and grain traits,yield,etc.The results showed that as the sowing date was postponed,the growth period of the two varieties correspondingly shortened,and the seed setting rate also decreased accordingly;both varieties were medium panicle type,with dense grains and moderate tillering ability;in terms of yield,May 24th sowing date treatment of Hanyou 3 had the highest yield(9247.5 kg/hm^(2)),while May 29th sowing date treatment of Hanyou 116 had the highest yield(9967.5 kg/hm^(2)).