| 缺磷对不同基因型玉米苗期生长及氮磷钾吸收的影响 |
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| 引用本文： | 彭正萍,孙旭霞,刘会玲,王艳群,白晓松.缺磷对不同基因型玉米苗期生长及氮磷钾吸收的影响[J].河北农业大学学报,2009,32(6). |
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| 作者姓名： | 彭正萍 孙旭霞 刘会玲 王艳群 白晓松 |
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| 作者单位： | 1. 河北农业大学,资环学院,河北,保定,071001
2. 廊坊职业技术学院,河北,廊坊,102800 |
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| 基金项目： | 河北省自然科学基金，国家粮丰工程河北省课题，国家973计划 |
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| 摘 要： | 采用营养液培养方法,研究了缺磷对9个玉米品种苗期的生长发育、根系形态、根系活性、氮磷钾吸收和转运率的影响。结果表明:缺磷减少玉米的叶片数、株高、根系活跃吸收面积、植株干重、氮磷钾吸收量和磷钾转运率,增加玉米的总根长、根表面积、根体积、总吸收面积和根冠比。品种间比较,缺磷条件下以‘蠡玉16’的干重最多,相对生物量最高为95.6%,原因是该品种有较大的根系表面积、活跃吸收面积、氮磷钾吸收量、氮磷转运率和磷钾根效比。
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| 关 键 词： | 缺磷 根系形态 根系活性 氮磷钾吸收 |
Effects of P deficiency on the plant growth and uptake of N,P and K in different maize cultivars at the seedling stage |
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| PENG Zheng-ping,SUN Xu-xia,LIU Hui-ling,WANG Yan-qun,BAI Xiao-song.Effects of P deficiency on the plant growth and uptake of N,P and K in different maize cultivars at the seedling stage[J].Journal of Agricultural University of Hebei,2009,32(6). |
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| Authors: | PENG Zheng-ping SUN Xu-xia LIU Hui-ling WANG Yan-qun BAI Xiao-song |
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| Institution: | PENG Zheng-ping1,SUN Xu-xia2,LIU Hui-ling1,WANG Yan-qun1,BAI Xiao-song1(1.College of Resources , Environmental Sciences,Agricultural University of Hebei,Baoding 071001,China,2.Langfang Polytechnic Institute,Langfang 102800,China) |
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| Abstract: | Plant growth,root morphology and activity,uptake of N,P and K,and nutrients' transport efficiency of nine maize cultivars at the seedling stage were studied under the hydroponics and P deficiency conditions.The results showed that P deficiency decreased leaf numbers and height of plant,active uptake area of root,dry weight of plant,uptake of N,P and K,and three nutrients' transport efficiency.However,the root length,surface area,volume and total uptake area,and the ratio of root to shoot were all increased.... |
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| Keywords: | P deficiency root morphology root activity uptake of N P and K |
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