论文部分内容阅读
应用品种Brock和Renard在温室和大田试验结果表明生物量与光能吸收量呈线性关系;温室受旱作物生育后期光能转化效率降低.水分亏缺主要通过降低光能吸收量,其次通过降低光能转化效率影响生物量积累.总生物量及茎鞘生物量积累都明显受到中、后期缺水的抑制,以开花前缺水的影响为甚.两品种生物量积累方式不同,Renard开花后积累转慢.缺水强化了茎鞘贮存物质的重新分配,尤以灌浆期缺水为甚.籽粒灌浆过程可用三段折线模式来拟合.开花前缺水使灌浆增强,部分地补偿了粒数的降低;后期干旱影响灌浆致使粒重降低.两品种属于不同灌浆类型,似乎短快型对避开后期干旱较有利.
The results showed that there was a linear relationship between biomass and light energy absorbed by Brock and Renard in greenhouse and field experiments, and the light energy conversion efficiency was reduced in the late growth stage of greenhouse crops. The water deficit mainly reduced the light energy absorption, The transformation efficiency could affect the biomass accumulation.The total biomass and the biomass accumulation of stem and sheath were obviously inhibited by the water deficit in the middle and late stages and were affected by the lack of water before flowering.The accumulation of biomass in two varieties was different, Slowed down. Shortage of water to strengthen the redistribution of material stored in the stems and sheaths, especially in the filling period is staggering. Grain filling process can be used three-fold line pattern to fit .Flowering before flowering to enhance grouting, partially compensated for the number of particles Of the grain weight of the two cultivars were affected by the later drought, which led to the decrease of grain weight.