不同施肥条件下小麦光合器官对单穗产量的影响

Effect of Wheat Photosynthesis Organs on Grain Yield of Single Ear in Different Fertilizations

为了解小麦光合器官对产量的作用以及施肥的调节效应,通过剪叶、包穗、包穗下节等处理,研究了不同施肥条件下小麦光合器官对千粒重、穗粒重、穗粒数的影响以及对千粒重贡和穗粒重的贡献率。结果表明,施肥既影响叶器官也影响非叶器官对产量的效应,且氮磷钾配合方式对小麦不同光合器官之间增产效果的影响差异显著。非叶光合器官中穗对产量的影响最大,主要是对千粒重影响明显,叶光合器官中旗叶对产量影响较大,叶主要是对穗粒数的影响显著。

Through the treatments of defoliate, darken ear and darken peduncle, we studied the effects of wheat photosynthesis organs on five items, such as 1000-grain weight, grain weight/ear, grain number/ear, contribution to 1000-grain weight and contribution to grain weight/ear in different fertilizations. It also indicates that there are significant differences in increasing grain yield of different photosynthesis organs among different combinations of N, P, K. The ears have the most influence to the grain yield among the non-leaf organs, mainly through increasing 1000-grain weight. The flag leaf affect the grain yield obviously among leaf organs, mainly through increasing the grain numbers/ear.