不同秧龄移栽对优质杂交晚稻产量和稻米品质的影响  

Effects of Different Transplanting Seedling Ages on Grain Yield and Quality of High-quality Late Hybrid Rice

作　　者：张桂莲[1,2] 刘逸童 向超豪 蔡志欢 唐文帮 ZHANG Gui-lian LIU Yi-tong XIANG Chao-hao CAI Zhi-huan TANG Wen-bang(College of Agronomy, Hunan Agricultural University, Changsha , Hunan 410128, China Southern Regional Collaborative Innovation Center for Grain and Oil Crops, Changsha, Hunan 410128, China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]南方粮油作物协同创新中心,湖南长沙410128

出　　处：《杂交水稻》2017年第5期66-70,共5页Hybrid Rice

基　　金：湖南省科技计划项目(2016NK2126);湖南省教育厅重点项目(17A100);湖南省做优做强湘米产业项目;作物学开放基金资助项目(ZWKF201504)

摘　　要：在大田条件下以桃优香占、隆晶优1号为材料,研究了不同秧龄移栽对优质杂交晚稻生育期、产量和稻米品质的影响。结果表明:随着秧龄期延长,齐穗期、成熟期推迟,全生育期延长,大田生育期缩短;随着秧龄期延长,产量呈现先增加后降低趋势,以25 d秧龄移栽的处理产量最高,长秧龄(35 d)移栽的处理产量最低;此外,25 d秧龄移栽的处理整精米率高、垩白粒率和垩白度低、蒸煮品质好。为实现优质高产,桃优香占的适宜秧龄为25~30 d,隆晶优1号的适宜秧龄为20~25 d。Using Taoyou Xiangzhan and Longjingyou 1 as the materials, a field experiment was carried out to study the effects of different transplanting seedling ages on the growth period, grain yield and grain quality of high-quality late hybrid rice. The results showed that with the seedling age prolonged, the full heading stage and maturity stage were delayed, resulting in a prolonged whole growth period but a shortened growth period from transplanting to maturity stage in the main field. With the delay in seedling age, the grain yield firstly increased then decreased gradually. The highest grain yield occurred when the seedling age was 25 days while the lowest yield occurred when the seedling age was 35 days for both of Taoyou Xiangzhan and Longjingyou 1. Besides, the treatment with 25 days of seedling age had the highest head rice rate but the lowest chalky rice rate and chalkiness degree, and it had also a better cooking quality. To achieve both high yield and high quality, the appropriate seedling age was found to be 25 - 30 days for Taoyou Xiangzhan and 20 - 25 days for Longjingyou 1.

关 键 词：优质杂交晚稻 秧龄 产量 稻米品质 

分 类 号：S511.01[农业科学—作物学] S311