摘要
探索黑糯玉米硒吸收利用和籽粒营养品质对叶面喷施有机硒肥的响应,对生产中合理施用硒肥,进而支撑山西“特”“优”农业高质量发展具有重要意义。本研究以品种晋鲜糯8号为试验材料,于2020—2021年连续2年在山西晋中黑糯玉米典型种植区开展田间试验,设置一次喷施不同用量有机硒0、6和12 g Se hm^(-2),以及喷施量12 g Se hm^(-2)条件下分2次喷施,共4个处理,研究叶喷有机硒对黑糯玉米产量、硒吸收利用、籽粒花青素和铁锰铜锌含量的影响。结果表明,喷硒量和喷硒次数对黑糯玉米鲜食期籽粒产量和成熟期地上部各器官干物质量无影响。相比不喷硒,喷硒可提高鲜食期籽粒和成熟期地上部各器官硒含量、硒积累。喷硒12 g Se hm^(-2)时,籽粒硒含量达到满足人体硒营养需求的最低目标值100μg kg^(–1),增幅最大,介于110~181μg kg^(–1)。成熟期,植株各器官硒积累从高到低依次为叶片、籽粒、茎秆、苞叶、穗轴。喷硒12 g Se hm^(-2),分2次喷施的平均籽粒硒强化指数和籽粒硒回收率分别为6.95(μg kg^(–1))(g hm^(-2))^(–1)和2.4%,优于1次喷施。同时,鲜食期籽粒花青素和铁锰锌含量也最高, 2年平均值分别为209、27.9、15.9和22.8 mg kg^(–1),但各处理间籽粒铜含量无差异。因此,兼顾硒吸收利用和籽粒营养品质同步提升,该区黑糯玉米生产中叶喷有机硒肥用量至少应不低于12 g Se hm^(-2),且分2次喷施效果较优。
It is of great significance to explore the responses of selenium(Se)uptake and grain nutritional quality to foliar application of organic Se fertilizer in black waxy corn,so as to provide a scientific basis for the rational application of Se fertilizer,and then guarantee the high-quality development of‘Special’and‘Excellent’agriculture in Shanxi,China.A two-year field experiment was conducted at Jinzhong in Shanxi Province,located in the typical growing region of black waxy corn from 2020 to 2021.The cultivar of Jinxiannuo 8 was used as the test crop.There were four treatments of three Se spraying rates of 0,6,and 12 g hm^(–2) at early filling stage,and spraying Se in twice under Se rate of 12 g hm^(–2).The objective of this study is to clarify the impact of spraying rates and times of organic Se fertilizer on grain yield,Se uptake,and utilization in aerial plant part,grain anthocyanins and iron(Fe),manganese(Mn),copper(Cu),and zinc(Zn)concentrations.These results showed that grain yield at fresh stage and biomass in aerial part at maturity stage were influenced by neither Se spraying rates nor spraying times.Compared with the control,foliar Se application remarkably increased both Se concentration and accumulation in grain and each organ of aerial plant part at fresh and maturity stages,respectively.Grain Se concentration at 12 g Se hm^(–2) was observed to be the highest with a range of 110–181μg kg^(–1),which reaching the minimum recommended value of 100μg kg^(–1) for better human health.At maturity stage,Se accumulation in different organ of aerial part showed the following ranking:leaf>grain>stem>bract>cob.At the rate of 12 g Se hm^(-2),the average grain Se biofortification index and Se recovery were 6.95(μg kg^(–1))(g hm^(–2))^(–1) and 2.4%under the condition of spraying twice,respectively,which were higher than spraying one time.Also,the highest grain anthocyanin and Fe,Mn,Zn concentrations were found when spraying Se twice at 12 g hm^(–2),they were 209,27.9,15.9,and 22.8 mg kg^(–1),respectively,whereas there was no difference for grain Cu concentration among the treatments at fresh stage.Therefore,the organic Se rate should be at least 12 g hm^(-2) with spraying twice,for better promoting Se uptake and utilization and grain nutritional quality synchronously during black waxy corn production in Jinzhong of Shanxi province.
作者
黄婷苗
詹昕
陆乃昆
乔月静
陈杰
杨珍平
高志强
HUANG Ting-Miao;ZHAN Xin;LU Nai-Kun;QIAO Yue-Jing;CHEN Jie;YANG Zhen-Ping;GAO Zhi-Qiang(College of Agronomy,Shanxi Agricultural University/Ministerial and Provincial Co-Innovation Centre for Endemic Crops Production with High-quality and Efficiency in Loess Plateau,Taigu 030801,Shanxi,China)
出处
《作物学报》
CAS
CSCD
北大核心
2023年第10期2845-2853,共9页
Acta Agronomica Sinica
基金
黄土高原特色作物优质高效生产省部共建协同创新中心自主研发项目(SBGJXTZX-42)
国家重点研发计划项目(2021YFD1900700)
山西省高等学校科技创新项目(2021L167)
山西省博士毕业生来晋工作奖励资金科研项目(SXBYKY2021030)
山西农业大学科技创新基金项目(2020BQ72)资助。
关键词
有机硒肥
黑糯玉米
叶喷
硒含量
花青素
微量元素
organic selenium fertilizer
black waxy corn
foliar application
Se concentration
anthocyanins
micro-element
