摘要
黑龙江省西部地区盐碱地水稻生产潜力巨大,为探究外源硅调控寒地盐碱地水稻耐盐碱的机理,本试验以绥粳306为材料,选用在盐碱土盆栽中种植和在盐碱地水田常规种植两种栽培方式,研究2.0 mmol·L^(-1)外源硅对水稻叶片、茎和根部器官主要无机离子的含量变化影响,明确盐碱条件下外源硅对水稻植株主要离子的吸收、运输和再分配规律。结果表明,盐碱胁迫下,外源硅添加能够显著降低水稻植株中Na^(+)离子的含量,减弱盐碱地寒地水稻Na^(+)与K^(+)、Ca^(2+)和Mg^(2+)离子间的拮抗效应,有效调控了水稻根向茎、茎向叶主要无机离子的运输比和运输选择比率。施用外源硅对寒地盐碱地水稻生理生态健康发展均有积极的作用。
In order to explore the mechanism of exogenous silicon regulating the saline alkali tolerance of rice in cold saline alkali land in Western Heilongjiang Province,Suigeng 306 was used as material.Two cultivation methods,pot planting in saline alkali soil and conventional planting in saline alkali paddy field,were selected to study the effect of 2.0 mmol·L^(-1) exogenous silicon on the content changes of major inorganic ions in rice leaves,stems and root organs,to clarify the absorption,transportation and redistribution of major ions in rice plants by exogenous silicon under saline alkali conditions.The results showed that under saline alkali stress,the addition of exogenous silicon could significantly reduce the content of Na^(+)ions in rice plants,weaken the antagonistic effect between Na^(+)and K^(+),Ca^(2+)and Mg^(2+)ions,and effectively regulate the transport ratio and transport selection ratio of major inorganic ions from root to stem and stem to leaf.The application of exogenous silicon has a positive effect on the physiological and ecological health development of rice in cold saline alkali land.
作者
张茂明
丁俊杰
刘凯
杨晓贺
姚亮亮
高雪冬
邱磊
来永才
ZHANG Mao-ming;DING Jun-jie;LIU Kai;YANG Xiao-he;YAO Liang-liang;GAO Xue-dong;QIU Lei;LAI Yong-cai(Northeast Branch of National Center of Technology Innovation for Saline-Alkali Tolerant Rice,Harbin 150086,China;Jiamusi Branch,Heilongjiang Academy of Agricultural Sciences,Jiamusi 154007,China;Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China)
出处
《黑龙江农业科学》
2022年第11期22-26,共5页
Heilongjiang Agricultural Sciences
基金
国家耐盐碱水稻技术创新中心东北中心建设项目(CZKYF2020A001)
黑龙江省应用技术研究与开发计划项目(GA20B104)
黑龙江省农业科学院“农业科技创新跨越工程”专项(HNK2019CX14)。
关键词
硅
寒地
盐碱地
水稻
离子平衡
silicon
cold area
saline alkali land
rice
ion balance
作者简介
第一作者:张茂明(1974-),男,硕士,副研究员,从事盐碱地水稻栽培技术研究及作物病虫害防治研究。E-mail:zkzzmm@163.com;通信作者:来永才(1964-),男,博士,研究员,从事现代农作制度、耕作栽培及农业资源利用研究。E-mail:yame0451@163.com。
