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运用秋发冬壮栽培技术,对3个油菜品种(中油杂1号、中双4号和中油821)进行超高产栽培,结果早薹率较高的品种中双4号(早薹率60.0％)和中油821(早薹率26.7％)的产量均达到了超高产水平(3750kg/hm~2)。在分析江汉平原油菜早薹后受冻概率和补救措施的基础上,认为江汉平原油菜超高产栽培应大胆采用秋发冬壮栽培技术途径,不应过分担心早薹所致的减产风险,以提高超高产栽培成功的概率。
By using autumn and winter cultivation techniques, the three rapeseed varieties (Zhongyouza 1, Zhongshuang 4 and Zhongyou 821) were super-high-yielding cultivated. The results showed that the varieties with early bolting rate Zhongshuang 4 (early bolting rate 60.0% ) And PetroChina 821 (early bolting rate was 26.7%) reached the level of super-high yield (3750kg / hm ~ 2). Based on the analysis of the probability of freezing and the remedial measures after the early bolting of the rapeseed in the Jianghan Plain, it is concluded that the super-high-yielding cultivation of rape in the Jianghan Plain should be boldly adopted the autumn and winter cultivation techniques and should not be overly concerned with the risk of yield reduction caused by bolting, Probability of super high yielding cultivation success.