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应用不同浓度的稀土对黑穗醋栗品种“新宾”进行了不同喷施次数的试验。结果表明，叶面喷施稀土后对黑穗醋栗叶片叶绿素含量、光合速率：光量子通量密度、气孔导度和蒸腾作用均有良好影响。喷２次效果略好于喷１次。
The application of different concentrations of rare earth black barley varieties “Xinbin” were sprayed at different times of the test. The results showed that the leaf chlorophyll content, photosynthetic rate: photon flux density, stomatal conductance and transpiration all had a good effect on the leaf of black currant. Spray 2 times slightly better than spray 1 times.