收割时间和留桩高度对泰优390再生稻产量的影响  

Effects of Harvest Time and Stubble Height on Yield of Ratoon Rice“Taiyou 390”

作　　者：陶瑶 汤卫强 管建丰 TAO Yao;TANG Wei-qiang;GUAN Jian-feng(Shangrao Meteorological Bureau of Jiangxi Province,Shangrao 334000,China;Guangfeng District Meteorological Bureau of Shangrao,Shangrao 344600,China)

机构地区：[1]江西省上饶市气象局,江西上饶334000 [2]上饶市广丰区气象局,江西上饶344600

出　　处：《江西农业学报》2023年第10期21-25,共5页Acta Agriculturae Jiangxi

基　　金：江西省气象局科研重点项目“江西省再生稻种植气候适宜性试验及示范推广研究”;上饶市气象局科研项目“基于多元分析的早稻产量预报模型研究”。

摘　　要：为探索不同头季稻收割时间和留桩高度对再生稻生长发育和产量的影响,以杂交水稻泰优390为试验材料,开展了不同头季稻收割时间和留桩高度对其生育期和产量结构的影响研究。结果表明,在20~40 cm留桩高度范围内,再生稻的生育期随留桩高度的增加而缩短;头季稻十成熟度收割时全年产量最高,且十成熟度收割的头季稻产量明显高于八、九成熟度收割的,而头季稻九成熟度收割萌发的再生稻可以获得较高的产量;头季稻收割时留桩高度40 cm对再生稻产量形成比较适宜。综合考虑头季稻+再生稻全年的产量及效益,头季稻宜选择在十成熟度、40 cm留桩高度收割。研究结果可为泰优390再生稻在长江中下游种植提供实践依据。In order to explore the effects of different harvest time and stubble height on growth and yield of ratoon rice,hybrid rice“Taiyou 390”was taken as experimental materials in 2019,and the effects of different harvest time and stubble height on the growth and development dynamics,yield and yield components of ratoon rice were studied.The results showed that as the stubble height increased at the range of 20~40 cm,the growth period of ratoon rice shortened.The total yield of the first season rice with 10 maturity was the highest,and the yield per unit area of first season rice with 10 maturity was significantly higher than that of first season rice with 8 maturity and 9 maturity.The ratoon rice could obtain higher yield when the first season rice harvested at 9 maturity.Ratoon rice with stubble height of 40 cm had better yield.Comprehensive analysis of the yield and benefits of first season rice and ratoon rice,the first season rice should be harvested at 10 maturity and 40 cm stubble height.The results provided technical basis for planting ratoon rice“Taiyou 390”in the middle and lower reaches of the Yangtze River.

关 键 词：再生稻 泰优390 产量 收割时间 留桩高度 

分 类 号：S511.03[农业科学—作物学]