减肥配施微生物菌剂对五优稻四号抗倒性和产量的影响

Effect of Reduced Fertilizer and Utilization of Microbial Inoculant on Lodging Resistance and Yield of Wuyoudao 4

采用田间小区对比试验方法,研究减肥配施微生物菌剂对常规优质稻品种五优稻四号抗倒性和产量的影响。试验设置4个处理:A为对照,常规施肥;B减施化肥20%配施微生物菌剂;C减施化肥30%配施微生物菌剂;D减施化肥40%配施微生物菌剂。结果表明,与常规施肥相比,化肥减量配施微生物菌剂处理均能降低五优稻四号株高,提高其抗倒伏能力。就产量而言,相比常规施肥处理,减肥30%配施复合微生物菌剂产量最高,为5574.75 kg/hm^2,略高于对照,减肥40%配施微生物菌剂产量为5388.75 kg/hm^2,略低于对照,但处理间产量差异均不显著。可见,施用复合微生物菌剂可以在一定程度上抵消化肥减少对水稻产量的影响,该研究结果对化肥减施合理配比微生物菌剂保障作物产量有一定的指导意义。

The field plot contrast test was used to study the effect of fertilizer reduction combined with microbial agents on the lodging resistance and yield of Wuyoudao 4.The test had three treatments:20%reduction of fertilizer combined with microbial agents,30%reduction of fertilizer combined with microbial agents,40%reduction of fertilizer combined with microbial agents and conventional fertilizer(control).The results showed that three treatments of fertilizer reduction combined with microbial agents could decrease the plant height of Wuyoudao 4 and improve its lodging resistance,compared with conventional fertilization.In terms of yield,the yield of 30%reduction of fertilizer combined with microbial agents was the highest,which was 5574.75 kg/hm^2 and slightly higher than that of the control.The yield of 40%reduction of fertilizer combined with microbial agents was 5388.75 kg/hm^2,slightly lower than that of the control.The difference of the yield between the treatments was not significant.It can be seen that the application of compound microbial agents can offset the impact of chemical fertilizer reduction on rice yield to some extent.The results of this study have certain guiding significance for the reduction of fertilizer reasonably combined with microbial agents to guarantee crop yield.