摘要
In order to select a suitable foliar fertilizer for Brassica napus L.at the seedling stage,using‘Fengyou 958’as the material,different foliar fertilizers including BR,Se,Si,BR+Si,BR+Se,Se+Si and BR+Se+Si were sprayed at the seedling stage to study their effect on the physiological characteristics,growth and yield of Brassica napus L..The results showed that the growth,chlorophyll content,soluble sugar content,soluble protein content,and yield of different treatments at the budding stage improved compared with the control.The effect of the Si+Se treatment was the best,followed by the Se and Si treatments.The chlorophyll content of the flower decreased continuously during the whole flowering period,and the chlorophyll content of the mature silique peel was higher than that of the seed.The content of soluble sugar in flowers was the highest in the early flowering stage,and the content of soluble sugar in leaves at the flowering stage was higher than that at the budding stage.The soluble sugar content in the harvested silique peel decreased gradually with the increase of time,and that in the silique peel and seed was similar at 35 d after pollination.The soluble protein content in the silique peel and seed decreased gradually at the mature stage,and the soluble protein content in the silique peel was higher than that in the seed at the same stage.Si+Se foliar fertilizer spraying at the seedling stage can promote the growth and yield of Brassica napus L.and can be applied in Brassica napus L.production.
为筛选合适的油菜苗期叶面肥,以‘沣油958’为材料,研究了不同叶面肥处理(BR、Se、Si、BR+Si、BR+Se、Se+Si和BR+Se+Si)对油菜生长、生理特性及产量的影响。结果表明:不同处理油菜的蕾薹期长势、叶绿素含量、可溶性糖含量、可溶性蛋白含量和产量较对照均有所提高,其中Si+Se处理的效果最佳,Se和Si处理次之;整个花期花的叶绿素含量不断下降,角果皮叶绿素含量整体高于种子;花的可溶性糖含量以初花期最高,花期叶的可溶性糖含量要高于蕾薹期,收获期角果皮中可溶性糖含量随着时间的延长逐步降低,授粉后35 d角果皮和种子的可溶性糖含量接近;成熟期角果皮和种子中的可溶性蛋白含量随着时间的延长均逐步下降,但角果皮的可溶性蛋白含量高于种子。总之,苗期喷施Si+Se叶面肥对油菜生长、生理特性及产量有一定促进作用,可在油菜生产中推广应用。
