油菜杂交种和常规种干物质积累及营养吸收的比较

THE DIFFERENCE OF DRY MATTER ACCUMULATION AND NUTRITIONAL ABSORPTION BETWEEN HYBRID AND CONVENTIONAL RAPE

以油菜杂交种黄杂１号和常规种中油８２１为供试材料。结果指出，黄杂１号各生育期植株干物质和氮、磷、钾积累的变化与中油８２１相似，为由弱变强的上升过程，但均大于中油８２１。另外，两品种各生育期植株氮、磷、钾浓度变化亦相似，为由高到低的下降过程。虽然黄杂１号在大部份生育时期各器官的氮、磷、钾浓度高于中油８２１，但中油８２１在五叶期的氮、盛花期和终花期的磷、抽薹期以前茎叶以及盛花期后分枝的钾浓度比黄杂１号较高。

With the materials of hybrid rape Huangza NO,1 and conventional rape Zhongyou 821,the results showed the accumulation of dry matter and N,P,K of Huangza No.1 in different growth stages were similar to that of Zhongyou 821.It was a rising process from low to high.But the accumulative strength of Huangza No.1 was greater.The concentration of N,P,K of Huangza No.1 in different growth stages were also similar to that of Zhongyou 821.It was a dropping process from high to low. The concentration of N, P,K of Huangza No.1 were higher in most growth stases. But Zhongyou 821's N concentration in five -leaf stage,P concentration in flourishing flower stage and ending flower stage,K concentration in above ground plants before sprouting stem stage and in branches after flourishing flower stage were higher.It indicated the nutritional difference between two rape varieties was significant.