不同土壤硒浓度对辣椒产量及硒含量的影响研究
Effects of Different Soil Selenium Concentrations on Pepper Yield and Selenium Content
李瑜 1张军 2张百忍 1周高新 1孙莹莹 1唐晓东 1高海娜1
作者信息
- 1. 安康市农业科学研究院,陕西 安康 725021
- 2. 安康市富硒产品研发中心,陕西 安康 725000
- 折叠
摘要
以亚硒酸钠为外源硒肥,通过在土壤中施入不同浓度硒肥的方式,探索硒肥对辣椒产量和不同生育期植株各器官对硒的富集规律,为富硒辣椒的生产及开发利用提供一定的理论依据.结果表明:施硒浓度在10 mg/kg以上时可使辣椒增产7.50%～10.8%;辣椒不同生育期植株各器官对硒的富集规律存在明显差异,在苗期时,辣椒植株硒含量随土壤硒浓度增大呈现显著的先增大后降低而后保持稳定的趋势,开花坐果期时辣椒叶部硒含量呈现持续增加态势,茎部及根部富硒规律与叶部存在明显不同;收获期时,辣椒叶部硒含量明显高于植株其他器官,各器官硒含量高低依次排序为:叶>根>果实>茎;单株辣椒果实的硒累积量变化规律与辣椒果实硒含量变化规律一致,并在10 mg/kg浓度处理水平达到最高值.综合考虑辣椒产量、硒含量及果实硒累积量因素后认为,10 mg/kg的土壤硒浓度是最适合辣椒进行富硒栽培的土壤硒浓度.
Abstract
Using sodium selenite as exogenous selenium fertilizer,different concentrations of selenium fertil-izer were applied in soil to explore the rule of selenium enrichment on pepper yield and plant organs at different growth stages.This study aims to establish a theoretical foundation for the production,development,and utiliza-tion of selenium-rich peppers.The results showed that when the concentration of selenium was above 10mg/kg,the yield of pepper increased by 7.50%～10.8%.At the seedling stage,the selenium content of pepper plants increased first,and then decreased,after that it maintained a stable trend with the increase of soil selenium con-centration.At the flowering and fruit setting stage,the selenium content of pepper plants continued to increase,and the selenium enrichment law of stems and roots was obviously different from that of leaves.At the harvest stage,the selenium content in the leaves was significantly higher than that in other organs of the plant,and the selenium content in each organ followd the order of leaves>roots>fruits>stems.The variation of selenium accumulation in single pepper fruit was consistent with the variation of selenium content in pepper fruit,and reached the highest value at 10mg/kg concentration level.After evaluating the yield,selenium content and fruit selenium accumulation of pepper,it was concluded that the soil selenium concentration of 10mg/kg is the most suitable level for cultivating selenium-rich pepper.
关键词
土壤硒浓度/辣椒/产量/硒含量Key words
Soil selenium concentration/Pepper/Yield/Selenium content引用本文复制引用
基金项目
中国富硒产业研究院富硒专项"236"计划重点科研攻关项目(2019ZKG6-01)
出版年
2024
NETL
NSTL
万方数据