| 不同供氮水平对玉米体内干物质和氮动态积累与分配的影响 |
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| 引用本文： | 张家铜,彭正萍,李婷,袁硕,王艳群,薛世川.不同供氮水平对玉米体内干物质和氮动态积累与分配的影响[J].河北农业大学学报,2009,32(2). |
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| 作者姓名： | 张家铜 彭正萍 李婷 袁硕 王艳群 薛世川 |
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| 作者单位： | 1. 河北农业大学,资源与环境科学学院,河北,保定,071001
2. 邯郸市农业广播电视学校,河北,邯郸,056001 |
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| 基金项目： | 国家粮食丰产工程项目，国家重点基础研究发展规划(973计划)，河北省自然科学基金 |
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| 摘 要： | 为给宁晋地区玉米高产高效、合理地施用氮肥提供科学依据,在高磷土壤上研究了不同供氮水平对玉米体内干物质、氮动态积累和分配、根系发育及产量构成的影响。结果表明:与不施肥相比,施氮肥增加了整株玉米及籽粒中干物质和氮的积累,整株玉米干重与出苗天数呈显著二次相关。根、茎、叶、穗轴的干物质和氮积累均有先增加后降低的趋势,最大值多数出现在出苗后58 d。同一取样时期,不同处理玉米体内干物质和氮积累随施氮量增加而增加,当施氮240 kg/hm2时最大,随后降低;施肥量与产量之间呈明显的二次关系,当施肥量为254.32 kg/hm2时,最高产量为11 118.18 kg/hm2,在该处理下玉米的根系发育较好、玉米穗长、行粒数、单株粒重显著增加,秃尖长度显著减少。
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| 关 键 词： | 玉米 不同供氮水平 干物质 氮动态 积累与分配 |
Effects of different N application rates on the dynamic accumulation and distribution of assimilate and N content in maize |
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| ZHANG Jia-tong,PENG Zheng-ping,LI Ting,YUAN Shuo,WANG Yan-qun,XUE Shi-chuan.Effects of different N application rates on the dynamic accumulation and distribution of assimilate and N content in maize[J].Journal of Agricultural University of Hebei,2009,32(2). |
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| Authors: | ZHANG Jia-tong PENG Zheng-ping LI Ting YUAN Shuo WANG Yan-qun XUE Shi-chuan |
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| Institution: | 1.College of Resources and Environmental Sciences;Agricultural University of Hebei;Baoding 071001;China;2.Agricultural Broadcasting School of Handan;Handan 056001;China |
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| Abstract: | To get higher yield and make better use of nitrogenous fertilizer in Ningjin,dynamic accumulation and distribution of dry matter and N,development of roots and constitutes of yield of maize were studied with different N application rates in the field with most of P.The results showed the dry weight and N in whole plant and seed increased with the treatment of N fertilizer application than CK.There were significantly conic relations between dry weight and days after seeding among all treatments.Dry weight an... |
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| Keywords: | different N application rates dry weight N content accumulation and distribution |
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