东方百合养分吸收规律和分配特点的研究

Nutrient Uptake and Distribution in Oriental Hybrids of Lily

本文通过温室田间实验,研究了东方百合的养分吸收规律和分配特点。结果表明,现蕾以前,以消耗鳞茎中的养分为主,供应百合植株生长;由现蕾开始,历时30天,为百合吸收氮素的高峰期,现蕾始历时45天为百合吸收磷的高峰期,钾的吸收较早,由展叶期开始,直至切花期,共计75天。氮、磷、钾在各器官的分布:现蕾以前以叶片为主,茎秆次之,地下部最少;随着百合的生长,地下部养分比重上升,进入切花期后,茎、叶养分降低,以地下部和花蕾为主。百合吸收氮、磷、钾的比值:现蕾以前为1∶0.17∶1.08,现蕾以后为1∶0.15∶1.45。

The characteristics of nutrient absorption and distribution in Oriental hybrids(Siberia) of lily were investigated. Before flower bud appearance,the plant mainly used the materials stored in the bulb. The period of highest nitrogen use was about thirty days after flower bud appearance, that of phosphorus was about forty-five days after flower bud appearance, however, the absorption peak of potassium was earlier than that of nitrogen and phosphorus.Before the flower bud appearance, the contents of N,P and K in leaf were higher than in stem and since then,the contents of the nutrient in the underground parts became higher and higher. AE harvest, the contents of N,P and K in leaf and stem were lower than at flower-bud. The results also showed that the ratio of N, P,and K in the whole plant was 1∶0.17∶1.08 before flower bud appearance and 1∶0.15∶1.45 after flower bud appearance.