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| DOI： |
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| Impact of Spraying Manganese Fertilizer on Leaf on Growth, Absorption and Transfer of Manganese in Spring Wheat |
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ZENG Jianguo, LI Tingliang, WEN Tao, WANG Weihua, ZUO Yuhuan, LI Jia
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College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China
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| Abstract: |
| The use efficiency of manganese is very low when applied as base fertilizer in calcareous soil. Using pot experiments, this paper investigated the efficacy of spraying MnSO4 at different concentrations on the leaf of spring wheat at different growth stages in improving its physiological traits, yield, as well as absorption and transfer of the manganese. The results showed that leaf-spraying MnSO4 solution at 0.2% to 0.5% concentration from jointing stage to filling stage increased the activities of peroxidase and catalase, as well as the content of chlorophyll. Leaf-spraying MnSO4 solution at 0.05% to 0.2% concentration at booting stage significantly improved the grains per spike and 1000-grain weight. Also, leaf-surface spraying improvedthe yield and the manganese content in different organs. With the increase in MnSO4 concentration, the distribution of manganese in the plant organs was in the order of leaf>glume>root>seed>stem. The manganese sprayed at the jointing stage was transferred mainly to the roots, while thoses prayed atbooting and filling stages were transferred to the glume and the content of manganese in the grain varied from 41.8 to 81.1 mg/kg. Considering improvement in physiological traits, yield and manganese absorption and transfer, spraying MnSO4 with 0.2% concentration at the booting stage is effective for improving yield and grain quality. |
| Key words: spraying manganese fertilizer; spring wheat; physiological index; yield; absorption and transfer of manganese |
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