不同生育期茭白对氮磷钾的吸收状况研究  

Absorption of Nitrogen,Phosphorus and Potassium During the Growth Process in Zizania caduciflora L.

作　　者：高盼[1] 杨佳[1] 王必武 黄立强 吴惠生 张德才 喻霞[5] 郑兴飞[5] 胡中立[5] 刁英[1,5] 

机构地区：[1]重庆文理学院林学与生命科学学院,重庆402168 [2]湖北省仙桃市土壤肥料工作站,湖北仙桃433001 [3]湖北省建始县土壤肥料工作站,湖北建始445300 [4]湖北省土壤肥料工作站,武汉430070 [5]武汉大学生命科学学院,武汉430072

出　　处：《湖北农业科学》2016年第20期5199-5201,共3页Hubei Agricultural Sciences

基　　金：国家科技支撑计划项目(2012BAD27B02);国家测土配方施肥补贴资金项目

摘　　要：以鄂茭2号为供试材料,研究其叶片在不同生育期氮、磷、钾含量的变化规律。研究发现,茭白不同生长期对氮磷钾的吸收量不同。茭白在幼苗期到发棵期,氮磷钾的吸收积累均呈增长趋势;发棵盛期,茭白对氮磷钾3种营养素的吸收都急剧增加,其中对氮元素的吸收积累状况最为明显;衰亡期茭白对3种元素的吸收均开始下降。研究结果有助于指导茭白的科学施肥。The characteristic of nitrogen,phosphorus and potassium absorption during the growth period in Zizania caduciflora（Ejiao 2） was studied. The results showed that the absorption contents of nitrogen,phosphorus and potassium were different in different growing periods. The contents of N,P and K increased from the beginning stage to the early tilling stage,and increased rapidly at the earlier expanding stage,especially the absorption and accumulation of N increased dramatically. At the last stage,the absorption of N,P and K decreased. The study is useful to conduct an efficient fertilizing in Zizania caduciflora.

关 键 词：茭白 氮 磷 钾 含量 吸收状况 

分 类 号：S645.2[农业科学—蔬菜学]