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作物生育期的预测是作物动态模型的重要功能之一,而其中重要的一步就是确定作物对光周期反应的各个时期。前人研究将作物对光周期的反应分为光周期诱导前期(BVP)、诱导期(PSP)和诱导后期(PPP),本研究以大麦为例,通过不同光照时间试验,定量的确定大麦的光周期反应中的各个时期的天数及它们之间的变化规律,结果表明,利用BVP、PSP和PPP可以较好的反应大麦受光周期变化的影响;由短光照条件移到长光照条件下的诱导期PSPS大于由长光照条件移到短光照条件下的PSPL,且所获得的各个发育参数与长日条件下的最短发育天数具有显著相关,而与短日条件下的最长发育天数相关不显著;并根据大麦品系的花前生育期长短,将它们分为偏冬性、弱春性与强春性3个类型。
Prediction of crop growth period is one of the important functions of crop dynamic model, and an important step of the crop identification is the period of crop response to photoperiod. In previous studies, the response of crops to photoperiods was divided into BVP, PSP and PPP. In this study, barley was used as an example to determine the effects of barley The results showed that the use of BVP, PSP and PPP could better reflect the change of photoperiod of barley; the induction from short-light to long-photoperiod The PSPS was significantly longer than the PSPL under long-light conditions and short-term light conditions, and all the developmental parameters were significantly correlated with the shortest developmental days under long-day conditions, but not significantly with the shortest days According to the length of pre-anthesis of barley lines, they were divided into three types: partial winter, weak spring and spring.