“野香优保姆”对野香优676抗倒性及产量的影响

Effect of Yexiangyoubaomu on Lodging Resistance and Yield of Yexiangyou 676

以优质稻新品种野香优676为材料,选用硅肥+多效唑作为对照药剂,正常施肥为空白对照,研究了“野香优保姆”对其倒4节间倒伏指数及产量性状的影响。结果表明:“野香优保姆”在第1次追肥时与正常施肥肥料混合伴施,其结果主要是通过缩短水稻基部的节间长度,降低了倒伏指数;同时提高了水稻的穗粒数、结实率和千粒重,促进了水稻增产,增产达17.22%。施用硅肥+多效唑同样有效降低了倒伏指数,促进水稻增产,增产为12.67%。

The 4^(th) internode lodging index and yield performance of Yexiangyou 676 treated with plant growth regulators Yexiangyoubaomu and silicon fertilizer combination with paclobutrazol were investigated,results showed that mixed use of Yexiangyoubaomu and traditional fertilizers for first top dressing,shortened the basal internode length,decreased lodging index,increased spikeletes per panicle,seed setting rate and 1000-grain weight,and the grain production increased by 17.22%.Use silicon fertilizer and paclobutrazol also decreased lodging index,and increased yield by 12.67%.