不同植物生长调节剂复配对水稻产量性状的影响

Effects of Different Plant Growth Regulator Groups on Rice Yield Traits

为明确不同植物生长调节剂组合对水稻产量性状的影响,为植物生长调节剂在水稻增产上的应用提供参考,本试验以喷清水为对照(CK),设置单独施用海藻素以及以相同用量的海藻素分别与不同植物生长调节剂复配,于水稻拔节孕穗期进行3次叶面喷施,比较叶面喷施不同植物生长调节剂后水稻在产量、分蘖、株高以及地上部干重的差异。结果表明,施用海藻素后水稻产量提高9.4%~36.9%,主要表现在有效穗数、每穗粒数和结实率的增加;海藻素与其他植物生长调节剂复配施用后的效果更好,较单独施用海藻素增产12.9%~25.1%,其中以添加海藻素和复硝酚钠处理增产最为显著,主要表现在有效穗数、每穗粒数、分蘖数和地上部干物重的增加;海藻素+胺鲜酯处理有利于提高有效穗数和每穗粒数;海藻素+芸苔素内酯处理可促进有效穗数、每穗粒数、分蘖数和地上部干物重的提高。

In order to clarify the effects of different plant growth regulator groups on rice yield traits,and to provide references for application of plant growth regulators in rice yield enhancement,this experiment used clear water as the control(CK),and applied seaweed alone or mixed with different plant growth regulators with the same amount of seaweed.The foliar spraying was carried out three times at the jointing and booting stage of rice,and the differences in yield,tiller,plant height and above-ground dry matter accumulation of rice after foliar spraying with different plant growth regulators were compared.The results showed that the rice yield increased by 9.4%-36.9%after applying seaweed,mainly in the number of panicles,the number of grains per panicle and the grain setting;the combined application of seaweed and other plant growth regulators had better effects,and the yield increased by 12.9%-25.1%compared with the application of seaweed alone.Among them,treatment of addition of seaweed and sodium nitrophenolate had the most significant yield-increasing effect,mainly in the number of panicles,grains per panicle,tiller number and above-ground dry matter weight;treatment of addition of seaweed and diethyl aminoethyl hexanoate was beneficial to increasing the number of panicles,grains per panicle;treatment of addition of seaweed and brassinolide was beneficial to increasing the number of panicles,grains per panicle,tiller number and above-ground dry matter weight.