安徽农业科学2017，Vol.45Issue(20)：49-52,4.
施氮量和栽插密度对机插武运粳30产量形成的影响
Effects of Nitrogen Rates and Transplanting Densities on Yield Formation of Machine-transplanting Wuyunjing 30
摘要
Abstract
[Objectivve]To investigate the effects of nitrogen rates and transplanting densities on yield formation of machine-transplanting Wuyunjing 30.[Method]A field experiment was conducted to study the effects of nitrogen rates and transplanting densities on yield,yield component factors,dry matter accumulation and spike rate,and so on with four nitrogen rates (N of 225,270,315,360 kg/hm2) and three transplanting densities (planting spacing of 12 cm×30 cm,14 cm×30 cm,16 cm×30 cm) by using Wuyunjing 30 as material.[Result]With the increase of nitrogen application rate,the number of panicles per unit area increased,but the grain number per spike and seed setting rate decreased gradually.Yield was the highest when the nitrogen application rate was 270 kg/hm2,which was significantly higher than that of 225 kg/hm2 and 360 kg/hm2 treatments.Nitrogen application significantly increased dry matter accumulation at heading and maturity period,but too much nitrogen made ineffective tiller increased,spike rate decreased.As the transplanting density became smaller,the effective panicle decreased,while grain number and grain weight increased.There were no significant differences between planting spacing of 12 cm×30 cm and 14 cm×30 cm on yield,but both were significantly higher than that of 16 cm×30 cm.[Conclusion]The N of 275 kg/hm2,planting spacing of 14 cm×30 cm could give full play to the yield potential of Wuyunjing 30.关键词
武运粳30/施氮量/栽插密度/产量形成Key words
Wuyunjing 30/Nitrogen rates/Transplanting densities/Yield formation分类
农业科技引用本文复制引用
王文青,唐青,陈培峰,董明辉,顾俊荣..施氮量和栽插密度对机插武运粳30产量形成的影响[J].安徽农业科学,2017,45(20):49-52,4.基金项目
江苏省农业三新工程项目(SXGC[2016]088). （SXGC[2016]088）
