花生群体光合速率发展动态和日变化  

DEVELOPMENTAL TREND AND DIURNAL CHANGES OF CANOPY APPARENT PHOTOSYNTHESIS RATE IN PEANUT(ARACHIS HYPOGAEA L.)

作　　者：傅金民[1] 苏芳[1] 张庚灵 

机构地区：[1]山东农业大学农学系

出　　处：《中国油料》1995年第3期17-21,28,共6页

摘　　要：花生叶面积系数（ＬＡＩ）、群体净光合速率和群体呼吸速率分别在播后８２、９０和９０９５天达到高峰。ＬＡＩ与群体净光合速率的关系可分为播后８２天前的相关和其后的非相关阶段。ＬＡＩ与群体呼吸速率在播后５０天前同步增长；５０—８２天ＬＡＩ增加快，群体呼吸速率增加慢；８２９０天ＬＡＩ逐渐下降．群体呼吸速率迅速增加；９８天后同步下降四个阶段。群体净光合速率与群体呼吸速率的关系可分为播后５０天期间同步增长；５０—８０天关系不明显和９８天后同步下降的三个阶段。在不同生育时期，群体呼吸速率一天中均呈单峰曲线变化。群体净光合速率因品种而异，在苗期，海花１号一天中呈双峰曲线变化，并有严重午休现象，鲁花１１号则呈偏峰型。播种３０天后，两品种的群体净光合速率一天中均呈单峰曲线变化，１２∶００时达到高峰，早上６∶００７∶００时前、晚１７∶３０－１９∶００时后为负值。Two peanut cultivars,Haihua No.1 and Luhua No.11,were planted in a randomized complete block experimental design with three replications at Taian Experimental Farm,Shandong Agricultural University.Leaf area index(LAI),canopy apparent photosynthesis rate(CAP)and canopy respiration rate(CKR)were measured in the field.LAI,CAP and CRR reached their peak on the 82nd,90 th and from 90th to 95th day after sowing.LAI was linealy related to CAP prior to the 82nd day,but not afterwards.The increase before the 50th day and the decrease after the 98th day of LAI and CRR synchronized with a quicker enhancement of LAI and slower that of CRR from the 50th to 82nd day and with the gradual decline of LAI and quick increase of CRR from the 82nd to 98th day.The increase before the 50th day and the decrease after the 98th day of CAP and CRR were synchronous, but the relationship between CAP and CRR was complicated from the 50th to 98th day.At different stages, CRR in two cultivars changed in a one-side peak curve in a day.However,at the seedling,CAP in Haihua No.1 varied in a two-peak curve in a day and that in Luhua No.11 in a one -side peak curve.After the 50th day, Diurnal change of CAP in two cultivars shew.a one -peak curve with maximum at 12 oclock and was minus before 6 to 7 oclok and after 17:30 to 19 oclock.

关 键 词：花生 群体呼吸速率 群体光合速率 叶面积系数 

分 类 号：S565.201[农业科学—作物学]