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通过人工遮光与田间试验,论证了光照时数对供试大豆品种从第二片复叶到生理成熟的各发育期都有后效应,即前期光照短可加速其随后发育期之发育,前期光照长则相反。在自然条件下大豆某发育期发育的快慢,就光、温来说,决定于前期光照的后效应与本期光、温等三因子作用方向(促或延)与强度。光照后效应的发现对改进大豆物候期预报与加深对大豆发育规律的认识具有一定意义。
By artificial shading and field experiments demonstrated that the number of light hours on the test soybean varieties from the second compound leaf to the physiological maturation of each developmental period have a post-effect, that is, the early light can accelerate the development of its subsequent development, pre-light The opposite is true. Under natural conditions, the development of soybean at a certain developmental period depends on the light and temperature, and is determined by the post-photoperiod effect and the current light and temperature effects of the direction of the three factors (stimulation or delay) and intensity. The discovery of the light effects has some significance to improve the forecast of soybean phenophase and deepen the understanding of the law of soybean development.