不同叶面肥对晚稻叶片衰老和产量的影响  

Effects of Different Foliar Fertilizers on Leaf Senescence and Yield in Late Rice

作　　者：何虎[1] 杨宙[1] 邱在辉[1] 肖宇龙[1] 帅鹏 付高平 HE Hu;YANG Zhou;QIU Zai-hui;XIAO Yu-long;SHUAI Peng;FU Gao-ping(Rice Research Institute,Jiangxi Academy of Agricultural Sciences/National Engineering Laboratory for Rice(Nanchang)/Nanchang Rice Improvement Center(Nanchang Sub-center),Nanchang 330200,China;Seed Administration Bureau of Jiangxi Province,Nanchang 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]江西省种子管理局,江西南昌330046

出　　处：《江西农业学报》2020年第7期1-5,共5页Acta Agriculturae Jiangxi

基　　金：环鄱阳湖区双季稻绿色规模化丰产增效技术集成与示范(2018YFD0301101);南方多熟制粮油机械化生产种植模式与配套农艺研究(2018YFD0700701);江西优质晚粳新品种选育及机械化轻简化栽培技术研究(JXXTCX201701)。

摘　　要：以晚稻品种五优308为材料,在不同生育时期喷施3种叶面肥,对叶片生理指标和产量性状进行了测定。结果表明:喷施叶面肥的水稻叶片MDA含量普遍降低,3种保护酶(CAT、SOD和POD)的整体活性升高;叶面肥有助于维持水稻生育后期的叶绿素含量,并减弱剑叶和倒二叶的横向衰减,延缓衰老进程;水稻产量性状受叶面肥类型的影响较小,主要与喷施时期有关;有6个喷施处理表现出明显的增产效果,其中在齐穗期或齐穗后7 d喷施谷乐丰处理的投入产出比最高,有示范推广的前景。The field experiment was carried out to spray three different foliar fertilizers on late rice variety,Wuyou 308,at different growth stages.The physiological Indexes of leaf and yield traits were measured.The results indicated that MDA content in rice leaf with spraying foliar fertilizers decreased generally,and the overall activity of three protective enzymes(CAT,SOD and POD)increased.These foliar fertilizers could help to maintain leaf chlorophyll content at late growth stage,and restrain horizontal attenuation of the flag leaf and second leaf.So the senescence program of rice was delayed.Yield traits of rice were less influenced by the type of foliar fertilizer,and mainly correlated with the spraying stage.Six spraying treatments exhibited significant increase in yield.Two cultivation models of spraying foliar fertilizer Gulefeng at full heading stage or seven days later had the highest input-output ratios and good prospects for application.

关 键 词：叶面肥 晚稻 生理特性 保护酶 产量 叶片衰老 

分 类 号：S511.062[农业科学—作物学]