Simulation Research on the Wheat Lodging Disasters of the Gale or Rainstorm
In order to find out the lodging on wheat growth and yield influence,the author carried out two years of gale rainstorm lodging simulation test. The results show that after wheat lodging,lower leaves were rotten,and plant diseases and insect pests increased,while photosynthetic rate decline. The earlier lodging,the“negative geotropism zigzag” effect was more significant. It is most significant in earring stage. Production analysis results showed that the lodging time earlier,the effective spikelet,grain number and thousand seed weight were lower, the higher the rate of production. Yield decreased by 65.6% in the early lodging stage and anthesis was 50.4%. In the middle of the grouting after lodging,reduction rate began to decline. The production rate of medium and late grouting stages were 29.5% and 16.3% respectively. Cut rates in pubertal distribution,in the middle of the grouting was a inflection point and it was more influence on yield. Therefore,wheat heading stage and later, People should take measures as soon as possible to lodging defense and post-disaster remedy,especially before in the middle of the grouting when wind storm weather occurs.
NETL
NSTL
万方数据
维普
