不同化控制剂对优质杂交稻泰优398抗倒伏特性的影响  

Effects of Different Anti-lodging Preparations on Lodging Resistance of High-quality Hybrid Rice Taiyou 398

作　　者：何虎[1] 帅鹏 尹建华[1] 邱在辉[1] 杨宙[1] 乐丽红 孙明珠 HE Hu;SHUAI Peng;YIN Jian-hua;QIU Zai-hui;YANG Zhou;LE Li-hong;SUN Ming-zhu(Rice Research Institute,Jiangxi Academy of Agricultural Sciences/National Engineering Laboratory for Rice(Nanchang)/Nanchang Sub-center,National Rice Improvement Center,Nanchang,Jiangxi 330200,China;Jiangxi Agricultural Technology Extension Station,Nanchang,Jiangxi 330046,China)

机构地区：[1]江西省农业科学院水稻研究所/水稻国家工程实验室(南昌)/国家水稻改良中心南昌分中心,江西南昌330200 [2]江西省农业技术推广总站,江西南昌330046

出　　处：《杂交水稻》2021年第2期102-107,共6页Hybrid Rice

基　　金：国家重点研发计划“粮食丰产增效科技创新”重点专项(2018YFD0301101);国家重点研发计划“智能农机装备”重点专项(2018YFD0700701);江西省优质稻米产业重大技术协同推广计划。

摘　　要：设置5种化控制剂处理,研究了拔节期前喷施不同化控制剂对优质稻泰优398茎秆配置、抗倒伏特性及产量的影响。结果表明,5种化控制剂喷施后株高均显著降低但对产量没有显著影响,其中,4种制剂喷施后能够缩短基部倒4、倒5节间长度,喷施25%多效唑悬浮剂和5%烯效唑可湿性粉剂能显著增加植株推阻和倒3节抗折力,从而增强植株抗倒伏能力。在本试验条件下的5种化控制剂中,在拔节期前喷施25%多效唑悬浮剂和5%烯效唑可湿性粉剂对优质稻泰优398的抗倒伏能力提升效果较好。Five treatments of anti-lodging preparations were used to study the effects of spraying anti-lodging preparations just before jointing stage on stem configuration, lodging resistance and grain yield of the high-quality hybrid rice Taiyou 398. The results showed that spraying any of the anti-lodging preparations reduced the plant height significantly but did not affect the grain yield significantly. Among five anti-lodging preparations, four shortened the length of the 4th and 5th internodes from the top, and the treatments of MET(25%) and S-3307(5%) significantly increased the plant push resistance and break resistance of the 3 rd internode from the top, resulting in improvement of the lodging resistance. It is concluded that the MET(25%) and S-3307(5%) have a better effect on improving the lodging resistance of the high-quality hybrid rice Taiyou 398 under the conditions of this experiment.

关 键 词：化控 优质杂交水稻 泰优398 抗倒伏 

分 类 号：S511.01[农业科学—作物学] S311