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当前位置: 首页 > 文章 > 我国南方红黄壤地区优质油菜营养特性与施肥效应研究Ⅰ.不同油菜品种的氮磷营养特性 中国油料作物学报 2000,22 (4)
Position: Home > Articles > Plant nutritional aspects and effects of fertilizer application in rapeseed in red yellow soils of south China Ⅰ. Nature of nitrogen and phosphorus nutrition in different rapeseed varieties Chinese Journal of Oil Crop Sciences 2000,22 (4)

我国南方红黄壤地区优质油菜营养特性与施肥效应研究Ⅰ.不同油菜品种的氮磷营养特性

作  者：
郭庆元;李志玉;涂学文
单  位：
中国农业科学院油料作物研究所
关键词：
红黄壤;油菜;氮磷营养;施肥
摘  要：
在亚热带红黄壤地区稻田土壤上 ,研究 5个双低油菜新品种 (品系 )和 2个常规油菜品种在不同施肥条件下的氮、磷养分吸收积累差异及对生物学产量和籽粒产量的影响。结果表明 ,双低油菜品种中油 1 1 9、中双 4号苗期至成熟期的植株氮浓度略低于常规油菜中油 82 1 ,品种间的植株磷浓度差异不显著。苗期中双 4号、中油 1 1 9的氮吸收量大于中油 82 1和 831 3,花期则反之。生育前期不同品种磷吸收量的差异不显著 ,成熟期双低品种磷积累量低于常规品种。在 NK基础上增施磷 ,使油菜植株氮代谢高峰期推迟 ,氮肥的当季作物利用率提高 2 0 % ,植株磷浓度和吸收量大幅度提高 ,当季作物磷肥的利用率达到 32 %。未施磷条件下 ,中油 1 1 9籽粒产量高于其他常规品种 ,施磷则表现中油 82 1的增产率高于中油 1 1 9、中双 4号等双低品种。生物学产量亦表现同样趋势
译  名：
Plant nutritional aspects and effects of fertilizer application in rapeseed in red yellow soils of south China Ⅰ. Nature of nitrogen and phosphorus nutrition in different rapeseed varieties
作  者：
GUO Qing yuan, LI Zhi yu, TU Xue wen ( Oil Crops Research Institute, CAAS, Wuhan, 430062, China )
关键词：
Red yellow soils; Rapeseed; Nitrogen and hosphorus; Fertilizer applicati,
摘  要：
Five double low (low erucic and glucosinate content) and two conventional (double high) rapeseed cultivars were used to investigate their variation in absorption and accumulation of nitrogen (N) and phosphorus (P) in red yellow soil regions. The effects of N and P fertilizers on the biomass and seed yield of the cultivars were also studied. The double low cultivars including Zhongyou 119 and Zhongshuang No.4 possessed lower nitrogen content during the whole growth stage compared to the double high cultivar, Zhongyou 821. No significant difference in phosphorus content was found among the rapeseed cultivars involved. Absorption of nitrogen in seedling stage in the double low cultivars was higher than that in the double high cultivars which absorbed more in flowering stage. Absorption of phosphorus during the early growth stage was identical among the genotypes, but the conventional cultivars absorbed slightly more during the ripening stage. Reaction of biomass and seed yield to phosphorus fertilizer in the double high cultivars was found to be more sensitive than that in the double low cultivars.

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