摘要
硒是人体所必需的微量元素,随着人们对硒产品认识程度逐渐加深,富硒食品在市场上出现的越来越多。以乐陵金丝小枣为对象,于枣果幼果期、果实膨大期、转色期叶面喷施纳米硒肥,探究不同浓度梯度(0、4.8、9.6、14.4 mL/L)纳米硒肥对枣产量和品质的影响。结果表明,叶面喷施纳米硒肥可显著增加金丝小枣的产量和品质,随着喷施硒浓度的增加,金丝小枣枣果中硒含量逐渐增加,但产量出现先增加后降低的趋势,叶面喷施硒肥可显著增加可溶性固形物含量、维C含量以及枣果中和叶片中矿质元素含量,以9.6 mL/L浓度处理下效果最佳,产量增加33.0%,可溶性固形物显著增加8.4%,维C含量显著增加53.5%,且枣果中硒含量达0.28 mg/kg,较空白对照显著增加171.8%,矿质元素磷、钾、钙、镁、硼、铁的含量增加最为显著。综合分析,叶面喷施纳米硒肥浓度为9.6 mL/L时增产提质效果最佳。
Selenium is a necessary trace element for the human body. As people’s understanding of selenium products gradually deepens,more and more selenium-rich foods appear on the market. In this study,the Leling Ziziphus jujube was used as the object,and the nano meter selenium fertilizer was sprayed on the foliar surface of the jujube in the young fruit stage,fruit expansion stage,and color transformation stage to explore the effects of different concentration gradients(0,4.8,9.6,14.4 mL/L) of nano meter selenium fertilizer on the yield and quality of jujube. The results showed that the foliar application of nano meter selenium fertilizer significantly increased the yield and quality of Ziziphus jujube. With the increase of selenium concentration,the selenium content in Ziziphus jujube fruit gradually increased,but the yield first increased and then decreased. The foliar application of selenium fertilizer significantly increased the contents of soluble solids,vitamin C and mineral elements in jujube fruit and leaves. The best effect was occurred when treated with 9.6 mL/L selenium,the yield increased by 33.0%,the soluble solids increased significantly by 8.4%,the content of vitamin C increased significantly by 53.5%,and the content of selenium in jujube fruit reached 0.28 mg/kg,with a significant increase of 171.8% compared with the blank control. The content of mineral elements,such as phosphorus,potassium,calcium,magnesium,boron,and iron,increased most significantly. Comprehensive analysis shows that the effect of increasing the yield and quality is best when the concentration of nano meter selenium fertilizer is 9.6 mL/L with foliar application.
作者
宋会明
贺敬芝
梁军
马文凤
张宏彦
SONG Hui-ming;HE Jing-zhi;LIANG Jun;MA Wen-feng;ZHANG Hong-yan(College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193;Agricultural Bureau of Shandong Leling,Leling Shandong 253600)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2021年第4期203-207,共5页
Soil and Fertilizer Sciences in China
基金
“十三五”国家重点研发计划项目(2016YFD0200401)。
关键词
金丝小枣
叶面喷施
纳米硒
产量和品质
Ziziphus jujube
foliar spray
nano meter selenium
yield and quality
