移栽密度和方式对油菜生长发育与产量的影响

研究了密度和栽培方式对油菜产量、品质及产量构成因素的影响。结果表明,以移栽9 000株.亩-11穴2株处理的单位面积群体产量最高,达到245.93 kg.亩-1,产量较对照5 000 kg.亩-1增加了55.6%;籽粒含油量也最高,达到41.87%。随着密度的增加,单株产量及其构成因素、干物质重量呈下降趋势,而单位面积群体产量及其构成因素、群体干物质重量以及品质呈先增后减的趋势。

Effects of different transplant densities and cultivation methods on the growing development and yield and quality of rapeseed

In this paper,the effects of density and cultivation method on rapeseed yield,quality and produc-tion-related factors were studied.The results showed that the population yield per unit area could reach the highest,to 245.93 kg per 667 m2 in the density of 9 000 plants per 667 m2 with two plants per hole,which increased 55.6% of yield compared to that in the density of 5 000 kg per 667 m2;oil content in rapeseed was also the highest,reaching to 41.87%.With the increase of density,the single plant yield,the single plant yield components and the single plant matter accumulation took a downward trend,while per unit area population yield,the per unit area population yield composition,per unit area population material accumulation and per unit area population quality first increased and then decreased