穗肥施用时期对喀斯特区域杂交稻产量及农艺性状的影响  

Effects of Panicle Fertilizer Application Stage on Yield and Agronomic Characteristics of Hybrid Rice in Karst Region

作　　者：杨敏 何志旺 张恒栋 张发丽 YANG Min;HE Zhiwang;ZHANG Hengdong;ZHANG Fali(Guizhou Qianxinan Karst Regional Development Research Institute,Xingyi,Guizhou 562400,China)

机构地区：[1]贵州黔西南喀斯特区域发展研究院,贵州兴义562400

出　　处：《中国稻米》2018年第4期132-134,共3页China Rice

基　　金：黔科合院士站[2015]4002

摘　　要：为探讨喀斯特区域杂交水稻穗肥施用时期,进一步稳定水稻产量,于2015年以Y两优1号、渝优7109、江优919为材料,开展了不同穗肥施用时期对杂交稻产量和农艺性状的影响试验,结果表明,3个杂交水稻品种均以倒3叶期施穗肥的处理水稻产量最高,比其他处理分别高4.26%~9.01%、2.12%~19.22%、3.43%~9.93%,差异显著;倒3叶期施穗肥的处理水稻千粒重、穗长都最大,分别比其他处理高0.20%~6.42%和0.85%-11.77%;水稻的株高、上3叶长和叶宽,均表现为随着穗肥施用时期的推迟而降低。A field experiment was conducted to explore the application stage of panicle fertilizer on yield and agronomic characteristics of hybrid rice in 2015,using Y-Liangyou-1,Yuyou 7109 and Jiangyou 919 as materials.The results showed that,applying panicle fertilizer at inverse 3rd leaf could get highest yield in all the three hybrid rice,and the yield were increased by 4.26%~9.01%,2.12%~19.22%,3.43%~9.93%compared with the other treatments;the 1000-grain weight and panicle length were also highest in applying panicle fertilizer at inverse 3rd leaf;the plant height,the length and the width of the top three leaves were decreased with the delaying of panicle fertilizer application period.

关 键 词：水稻 穗肥 施肥时期 产量 农艺性状 

分 类 号：S511.062[农业科学—作物学]