摘要
为探究中微量元素肥料对超级杂交籼稻株型和干物质积累的影响,以超级稻品种‘天优3618’为试验材料,分别在2014年的早季和晚季进行大田试验。试验设置4个不同中微量元素肥料施用量处理,即CK (0 kg/hm^2)、T1 (375 kg/hm^2)、T2 (750 kg/hm^2)和T3 (1125 kg/hm^2),测定并分析株型(上三叶叶长和叶宽、剑叶叶厚、剑叶开张角)、倒1叶叶绿素相对含量(SPAD值)、群体干物质积累动态。结果表明:中微量元素肥料处理2014年早稻叶长、叶厚,叶宽呈增加趋势,说明中微量元素肥料处理影响叶片形态。另外,中微量元素肥料处理叶绿素相对含量呈增加趋势、上三叶开张角呈下降趋势,对群体干物质积累也具有一定促进作用。分析原因发现,超级杂交籼稻的株型和干物质积累不仅与施用肥料元素的种类有关,还与肥料元素间的配合施用、土壤基础地力等因素有关。本研究结果表明,中微量元素肥料375 kg/hm^2施用量处理对株型和干物质积累具有一定的积极作用,继续增加中微量元素肥料用量对株型和干物质积累的影响不大。
To explore the effects of medium and microelements fertilizer on plant type and dry matter accumulation of super hybrid Indica rice,the super rice variety‘Tianyou 3618’was used as test material,field experiments were conducted in the early season and late season respectively in 2014.Four different medium and microelements fertilizer application treatments were set as CK(0 kg/hm^2),T1(375 kg/hm^2),T2(750 kg/hm^2)and T3(1125 kg/hm^2).The plant type(including the leaf length and width of the upper three leaves,the thickness and the opening angle of the flag leaf),the relative content of chlorophyll(SPAD value)of the first leaf from the top,and dry matter accumulation dynamics of populations were analyzed.The results showed that,the leaf length,leaf thickness and leaf width had an increasing trend with medium and microelements fertilizer treatment in the early season in 2014,indicating that medium and microelements fertilizer treatment affected leaf morphology.In addition,the relative content of chlorophyll showed an increasing trend,while the opening angle of the up three leaves showed a decreasing trend with medium and microelements fertilizer applications.Medium and microelements fertilizer also had a certain promotion function on dry matter accumulation.The reasons were that the plant type and dry matter accumulation of super hybrid rice were not only related with the type of fertilizer elements,but also related with the combined application of fertilizer elements,and the basic soil fertility and other factors.The results of this research indicate that the medium and microelements fertilizer with 375 kg/hm^2 treatment has positive effects on the plant type,and further increasing the dose of medium and microelements fertilizer has no significant effect on plant type and dry matter accumulation.
作者
伍龙梅
李惠芬
张彬
黄庆
邹积祥
刘怀珍
陈荣彬
Wu Longmei;Li Huifen;Zhang Bin;Huang Qing;Zou Jixiang;Liu Huaizhen;Chen Rongbin(Rice Research Institute,Guangdong Academy of Agriculture Sciences,Guangzhou 510640;Guangdong Provincial Key Laboratory of New Technology in Rice Breeding,Guangzhou 510640)
出处
《中国农学通报》
2019年第28期1-6,共6页
Chinese Agricultural Science Bulletin
基金
广东省省级科技计划项目“华南双季机插水稻蘖位生产力调控及其配套技术的集成与示范”(2015A020209046)，“超级稻高产栽培关键技术集成与应用示范”(2016A020209002)，“高层次水稻科技人才队伍建设”(2016B070701011)，“水稻重要性状相关基因鉴定及多基因高效聚合育种研究”(2015B020231002)，“水稻抗病虫耐逆综合育种创新能力建设”(2017A070702006)
关键词
超级杂交籼稻
中微量元素
株型
干物质积累
super hybrid Indica Rice
medium and microelements
plant type
dry matter accumulation
