不同移栽密度对“吉科稻518”茎蘖动态及产量的影响

Effects of Different Transplanting Densities on Tiller Dynamics and Yield of“Jikedao 518”

以“吉科稻518”为试材,在30 cm×13 cm、30 cm×17 cm、30 cm×20 cm三组密度梯度下进行大田试验,以明确不同移栽密度对“吉科稻518”茎蘖动态及产量的影响。结果表明:不同移栽密度对“吉科稻518”的茎蘖动态影响较小,但对其产量及产量构成因素影响较大,30 cm×13 cm处理每穗粒数显著高于其它处理;30 cm×20 cm处理结实率显著高于其它处理;30 cm×17 cm处理千粒重显著高于其它处理;实际产量30 cm×13 cm处理最高,并且显著高于其它处理。“吉科稻518”的产量主要受每穗粒数因素影响。综上表明,“吉科稻518”属耐密品种,推广上可以适当采用密植方式进行生产。

With“Jikedao 518”as material,field experiments were carried out under three density gradients of 30 cm×13 cm,30 cm×17 cm,and 30 cm×20 cm in order to clarify the effects of different transplanting densities on tiller dynamics and yield of“Jikedao 518”.The results showed that different transplanting densities had little effect on the tiller dynamics of“Jikedao 518”,but had great influence on its yield and yield components,the number of grains per panicle in the 30 cm×13 cm treatment was significantly higher than other treatments;the seed setting rate of 30 cm×20 cm treatment was significantly higher than other treatments;the thousand-grain weight of 30 cm×17 cm treatment was significantly higher than other treatments;the actual yield of 30 cm×13 cm treatment was the highest,and it was significantly higher than other treatments.The yield of“Jikedao 518”is mainly affected by the number of grains per panicle.In summary,“Jikedao 518”is a dense-tolerant variety,and dense planting can be appropriately used for production.