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对不同时期的大豆叶面喷施不同浓度硒肥,研究硒肥施用对大豆的光合作用的影响,为提高大豆产量提供理论依据。试验结果表明,喷施硒肥后叶面积指数及比叶重均高于对照,但高浓度(300倍液)喷施会对大豆叶片叶绿素含量产生抑制作用,适当浓度(600倍液)喷施则有利于提高叶片光合速率;喷施硒肥可以改善大豆群体结构,调节光分布。
The effects of selenium fertilizer application on the photosynthesis of soybean were studied by applying different concentrations of selenium fertilizer to the soybean foliage in different periods to provide a theoretical basis for increasing soybean yield. The results showed that the leaf area index and specific leaf weight were all higher than those of the control after spraying selenium, but spraying with high concentration (300 times) could inhibit the chlorophyll content of soybean leaves. Spraying with appropriate concentration (600 times) Which will help improve the photosynthetic rate of leaves. Spraying selenium fertilizer can improve soybean population structure and regulate light distribution.