In order to prevent lodging,to achieve high and stable maize was treated by chemical control agent-ethephon to study its effect on main traits.The results showed that,characters of length of three ear-leaves,basal internode length,plant height,ear position,ear length and individual plant yield of maize treated was lower than that of the control,which inhibitory effect of length of three ear-leaves,internode length followed the turns:earlier stage ＞mid stage ＞late stage.At the same time,with the dose increasing length of three ear-leaves,plant height,ear position,ear length and individual plant yield decreased gradually and internode length showed no significant difference.With the time delaying,height of ear position showed the tendency of high-low-high; plant height gradually decreased; ear length didn't change significantly; Except for yield decreasing reduction of ‘Jinfeng 50' by ethephon showing the following tendency of low-high-low,yield decreasing reduction of ‘Jinfeng 50' and AH2067 by "XISHIMEI",or AH2067 by ethephon showing the tendency of high-low-high.Effect of chemical control agent on the ear rows and bald length was not significantly affected.
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万方数据
