关键词: 草莓, 硒, 富集, 叶片, 果实, 重金属

Abstract: ‘Beinong 3’strawberry was sprayed Se-fertilizer on leaves in different growing stages at the Na2SeO3 concentrations of 0，0.5，1.0，2.5，5.0 and 10.0 mg .8226. L-1. The Se，Cd and Pb content and other physiological indexes of leaves were detected after Se-fertilizer was sprayed. Heavy metal cadmium（Cd）and lead（Pb）accumulation affected by spraying Se-fertilizer to strawberry leaves. The changes of metabolic mechanism of strawberries after exogenous selenium being sprayed，and the interactive effects of selenium and heavy metal was investigated. The research results show that the strawberry had the highest absorption capacity of Se in the leaf-expansion period and full opening flower period，and Se can slow down the damage of cell membrane integrity by removing malonaldehyde（MDA）accumulation of membrance lipid peroxidation. Further，the toxic action of heavy metals was reduced，and the deposition of Cd and Pb in the strawberry leaves and fruits was effectively controlled. This research shows spraying Se-fertilizer to leaves is a sound method for supplementing selenium to the strawberries and suitable amount of selenium can alleviate the toxic action to the strawberry caused by heavy metal.

Key words: strawberry, selenium, accumulation, leaf, fruit, heavy metal