译 名：
The Safety Leaf Age of Spraying Chemical Control Agent'Jindele' in Summer Maize Along Huaihe River
作 者：
Wang Shiji,Ruan Long,Wang Jun,Wu Wenming,Chen Hongjian(Tobacco Research Institute /Corn Research Center,Anhui Academy of Agricultural Sciences,Hefei 230031)
关键词：
' Jindele ' ;leaf age;summer maize;grain yield;agronomic traits;Huaihe River
摘 要：
Field experiments were carried out in 2010 and 2011 to investigate the best leaf age when to spray chemical control agent ' Jindele ' of summer maize along Huaihe River.In this study,spraying chemical control agent ' Jindele ' 450 mL/hm 2 plus 225 kg of water during the period of 6 leaf age to tasseling stage were examined to investigate the effects of spraying control agent ' Jindele ' on plant height,ear height,three-ear-leaves,yield,ear row number,grain number per row and 1000-grain weight.The results showed that,spraying chemical control agent ' Jindele ' during the period of 6 leaf age to tasseling stage,with the increase of leaf age,the plant height,ear height,three-ear-leaves,yield,ear row number,grain number per row and 1000-grain weight decreased first and then increased.Plant height decreased to minimum at 14 and 16 leaf age,ear height reached minimum at 14 leaf age,three-ear leaves and grain yield reached minimum at 12 leaf age,ear row number minimized at 9 leaf age,grain number per row and 1000-grain weight minimized at 12 leaf age.Spraying chemical control agent ' Jindele ' during 10 to 18 leaf age significantly decreased plant height,and ear height decreased significantly during 8 to 16 leaf age.There was no significant difference between spraying chemical control agent ' Jindele ' treatment and control of grain yield when to spray chemical control agent at 6,7,8,16,18 leaf age and post tasseling stage.The results indicated that,6 to 8 leaf age were the safety leaf age to spray chemical control agent ' Jindele ',and 8 leaf age was the best leaf age to spray chemical control agent ' Jindele '.
