CAJ | 학술논문

为明确晚播冬小麦合理的群体结构，以济麦22为试验材料，研究了种植密度对晚播冬小麦叶绿素荧光动力学参数和产量的影响。结果表明，增加种植密度到300万～420万/hm2时，可改善晚播小麦叶片光合功能，提高灌浆期最大光合速率（ Pm ）、初始斜率（α）和最小半饱和光强（ Lk ）；其SPAD值、PSⅡ最大光化学效率（ Fv/Fm）、PSⅡ潜在活性（ Fv/Fo）、实际光化学效率（ΦPSⅡ）、荧光光化学淬灭系数（ qP）和非光化学猝灭系数（ qN ）等叶绿素荧光动力学参数较优，最终产量明显高于其他处理。表明合理的种植密度可改善晚播冬小麦光合功能，提高籽粒产量水平。
위명학만파동소맥합리적군체결구，이제맥22위시험재료，연구료충식밀도대만파동소맥협록소형광동역학삼수화산량적영향。결과표명，증가충식밀도도300만～420만/hm2시，가개선만파소맥협편광합공능，제고관장기최대광합속솔（ Pm ）、초시사솔（α）화최소반포화광강（ Lk ）；기SPAD치、PSⅡ최대광화학효솔（ Fv/Fm）、PSⅡ잠재활성（ Fv/Fo）、실제광화학효솔（ΦPSⅡ）、형광광화학쉬멸계수（ qP）화비광화학졸멸계수（ qN ）등협록소형광동역학삼수교우，최종산량명현고우기타처리。표명합리적충식밀도가개선만파동소맥광합공능，제고자립산량수평。
In order to definite a reasonable population composition of late-sowing winter wheat ,we selected Ji-mai 22 as field experimental material ,and studied the effect of planting density on fluorescence induction kinetic pa-rameters and yield of late-sowing winter wheat .The results indicated that the treatments of planting density of 300 ×10 4 -420 ×10 4/ha could improve photosynthetic function of late-sowing wheat ,and increased maximum pho-tosynthetic rate ,initial slope and the minimum half-saturated light intensity .The maximum photochemical efficiency (Fv/Fm),the PSⅡpotential activity(Fv/Fo),actual photochemical efficiency of PSⅡ(ΦPSⅡ),photo chemical quenching coefficient ( qP) and non photo chemical quenching coefficient ( qN) were higher of flag leaves and grain yield were higher in treatments of planting density of 300-420 10 4/ha.In result,the reasonable planting density could improve photosynthetic function of late-sowing wheat and increase grain yield .