论文部分内容阅读
以大花生品种606为材料,设置基肥∶拔节期∶始花期比例为35%∶35%∶30%,调查同比例的普通复合肥和控释复合肥施用后麦套花生叶片光合性能及产量和品质变化,以期探明花生叶片光系统II性能对不同肥料类型的生理反应机制。结果表明,花生结荚后期,各处理叶面积指数(LAR)、叶绿素含量(Chl)和净光合速率(Pn)均呈降低趋势;与施用普通复合肥处理相比,施用控释复合肥显著增加了花生叶片Chl含量,提高了LAR和Pn,延缓了叶片衰老。JIP-test分析表明,施肥可以引起荧光诱导曲线(OJIP曲线)显著变化,其中K、J和I点的荧光强度值明显降低。JCRF处理显著提高叶片捕获的激子将电子传递到电子传递链中QA下游的其他电子受体的概率(Ψo)和以吸收光能为基础的性能指数(PIabs),降低K点的可变荧光FK占Fj–Fo振幅的比例(Wk)和J点的可变荧光Fj占振幅Fo–Fp的比例(Vj),表明PSII反应中心电子传递链综合性能以及供体侧和受体侧的电子传递能力均明显提高,其中受体侧性能的改善大于供体侧。与普通复合肥处理相比较,控释复合肥处理的荚果产量和籽仁产量分别提高11.3%和15.2%,同时显著增加了花生籽仁蛋白质、脂肪和可溶性糖含量,提高了脂肪中油酸/亚油酸(O/L)的比值。因此,在等N-P2O5-K2O比例和等养分条件下,控释复合肥较普通复合肥可显著改善麦套花生叶片光合性能,有利于提高产量和改善品质。
The experiment was conducted to investigate the photosynthetic characteristics and yield of wheat peanut (Arachis hypogaea L.) peanut with the same proportion of common compound fertilizer and controlled release compound fertilizer after the same proportion of 35%, 35%, 30% Quality changes in order to identify the peanut leaf photosystem II performance of different types of fertilizer physiological response mechanism. The results showed that the leaf area index (LAR), chlorophyll content (Chl) and net photosynthetic rate (Pn) of all treatments decreased at the late podding stage. Compared with the application of common compound fertilizer, the application of controlled release compound fertilizer significantly increased Chl content of peanut leaves increased LAR and Pn, delayed leaf senescence. JIP-test analysis showed that the fertilization induced a significant change in the fluorescence-induced curve (OJIP curve), in which the fluorescence intensity values at K, J and I sites were significantly reduced. JCRF treatment significantly increased the probability (Ψo) of electron-trapping of electrons captured by the traps to deliver electrons to other electron acceptors downstream of QA in the electron transport chain, and the performance indices (PIabs) based on absorbed light energy, reducing the variable fluorescence at point K The ratio of FK-F amplitude (Wk) to J-point variable Fj-amplitude Fo-Fp (Vj) indicates the overall performance of the PSII reaction center electron transport chain as well as the donor and acceptor side electron transport Ability were significantly improved, of which receptor side performance improvement than the donor side. Compared with the treatment of common compound fertilizer, the yield and kernel yield increased by 11.3% and 15.2%, respectively, while the content of protein, fat and soluble sugar in peanut seeds increased and the content of oleic acid / Oleic acid (O / L) ratio. Therefore, under the condition of equal N-P2O5-K2O ratio and equal nutrients, the controlled-release compound fertilizer can significantly improve the photosynthetic properties of wheat-peanut leaves compared with ordinary compound fertilizers, which is beneficial to increase yield and improve quality.