播期对花生光合性能与产量影响的研究

摘要

Field experiments with a peanut cultivar ( Arachis hypogaea L. cv Qinghua5 ) under plastic film mulching were systematically conducted to investigate the effects of different sowing date photosynthetic characteristics and Yield in Peanut. The results indicated that: there were significant differences in the photosynthetic characteristics and yield of peanut under different sowing dates. In the sowing date of 10 May ,Schlorophyll SPAD ,LAI ,Photosynthesis rate of single leaf and yield were biggest in all treatments. when the sowing time was later or earlier,their contents would be reduced. This study considered that 10th May is the suitable time for sowing peanut to get abundant harvest.%以青花5号花生品种为材料,在田间地膜覆盖栽培条件下,系统研究了不同播期对花生光合性能和产量的影响.结果表明:不同播期对花生功能叶片光合性能和产量均有显著影响,叶面积系数、叶绿素SPAD值、净光合速率、产量均以4月30日和5月10日播种的较高,过早和过晚播种均不利于功能叶片光合性能和产量的提高.研究认为,在本试验条件下,5月上旬是花生获得高产的最佳播期.