2011•Shanghai nongye xuebaoRequires access
Effects of N fertilizer rate on seed yield and quality of rape cultivar 'Suyou 4'
Huang Meng
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Abstract
Field experiments with rape cultivar 'Suyou 4' were conducted under various N fertilizer rates to investigate the effects of N fertilizer rate on the rapeseed yield and quality.The results showed that the suitable N fertilizer rate for 'Suyou 4' was 270～313 kg/hm~2,and increasing N fertilizer rate improved the rapeseed yield mainly due to the increase of effective pods.Increasing N fertilizer rate less influenced the primary branches but had a greater impact on the secondary branches.With the N fertilizer rate increasing, the oil and protein contents of rapeseed gradually increased and then decreased but there were no direct effects on the erucic acid and glucosinolate contents of rapeseed.