Zhytomyr Polytechnic State University 103, Chudnivska str, Zhytomyr, 10005, Ukraine.
Knivsbrunna 37, Uppsala, Sweden.
J Environ Radioact. 2021 Feb;227:106466. doi: 10.1016/j.jenvrad.2020.106466. Epub 2020 Nov 25.
The impact of foliar fertilization with zinc (ZnSO) and manganese (MnSO on Cs uptake by spring wheat and potato was studied. The experiments were conducted during 3 years (2014-2016) in aCs-contaminated area, Zhytomyr region of Ukraine. The fertilization was carried out on podzolic loamy sand soil, poor in most of the microelements. Both crops were fertilized at four successive stages of growth. Foliar application of fertilizers caused higher yield of wheat grain/straw and potato tubers yield in 2014-2015 years but had no effect in 2016. Thus, the overall effect of fertilization between 2014 and 2016 was less pronounced and generally insignificant. Application of Zn, Mn and EDTA reduced Cs uptake by wheat grain and potato tubers, when fertilized at earlier stages of growth and development in years 2014 and 2015 by factor 1.5-2.0, while in 2016 the effect was generally statistically insignificant. It is suggested, that reduction of Cs uptake by spring wheat and potato, at least partly, was caused by an effect of radionuclide dilution due to the higher biomass of the plants. A foliar spray of EDTA at earlier stages of plant growth and development may be considered as a potential countermeasure aiming reducing Cs uptake from soil to plants, even if such effect appeared to be conditional.
叶面喷施锌（ZnSO）和锰（MnSO）对春小麦和马铃薯吸收 Cs 的影响进行了研究。该实验在乌克兰日托米尔地区的一个 Cs 污染区进行了 3 年（2014-2016 年）。施肥在贫瘠的大部分微量元素的灰化壤质沙土上进行。两种作物都在连续四个生长阶段施肥。2014-2015 年，叶面施肥导致小麦籽粒/秸秆和马铃薯块茎产量更高，但 2016 年没有效果。因此，2014 年至 2016 年期间施肥的整体效果不太明显，通常也不重要。在 2014 年和 2015 年生长发育的早期阶段施肥时，应用 Zn、Mn 和 EDTA 可降低小麦籽粒和马铃薯块茎对 Cs 的吸收，降低因子为 1.5-2.0，而 2016 年的效果通常在统计学上不显著。有人认为，春小麦和马铃薯对 Cs 的吸收减少，至少部分是由于植物生物量增加导致放射性核素稀释的影响。在植物生长发育的早期阶段叶面喷施 EDTA 可以被认为是一种潜在的对策，旨在减少从土壤到植物的 Cs 吸收，即使这种效果似乎是有条件的。
