| 施用磷肥对春小麦产量与吸氮特性及土体中硝态氮累积的影响 |
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| 引用本文： | 张爱平,刘汝亮,李友宏,杨世琦,杨淑静,杨正礼.施用磷肥对春小麦产量与吸氮特性及土体中硝态氮累积的影响[J].干旱地区农业研究,2009,27(5):30-34. |
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| 作者姓名： | 张爱平 刘汝亮 李友宏 杨世琦 杨淑静 杨正礼 |
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| 作者单位： | 1. 中国农业科学院农业环境与可持续发展研究所,北京,100081
2. 宁夏农林科学院农业资源与环境研究所,宁夏,银川,750002 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项河流水环境综合整治技术研究与综合示范主题特殊河流项目 |
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| 摘 要： | 通过宁夏引黄灌区田间小区试验,研究施磷量分别为0、60、120、180 kg/hm2对春小麦产量、磷肥利用率、吸氮特性和土壤中硝态氮累积的不同影响,旨在明确该区合理施磷量.结果表明:合理施用磷肥(60～120 kg/hm2)能提高春小麦籽粒产量和生物量.当施磷量为120 kg/hm2,小麦籽粒产量最高,为6 215 kg/hm2.春小麦氮素累积动态呈先增加后降低的趋势,增施磷肥能增加小麦吸氮量,但到成熟期春小麦地上部氮素累积出现损失,损失量达7.7%～13.4%.当施磷量分别为60、120、180 kg/hm2时,0～150 cm土层中的NO3--N累积量分别比对照减少了50.6、58.5、62.9 kg/hm2.综合考虑磷肥利用率、小麦产量和降低土体中NO3--N残留等方面的因素,磷肥当季施用量应该控制在60～120 kg/hm2.
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| 关 键 词： | 春小麦 磷肥 吸氮特性 硝态氮残留 |
Effects of P fertilizer application on yield of spring wheat and characteristics of N absorption and NO-3N accumulation in soil profile |
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| ZHANG Aiping,LIU Ruliang,LI Youhong,YANG Shiqi,YANG Shujing,YANG Zhengli.Effects of P fertilizer application on yield of spring wheat and characteristics of N absorption and NO-3N accumulation in soil profile[J].Agricultural Research in the Arid Areas,2009,27(5):30-34. |
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| Authors: | ZHANG Aiping LIU Ruliang LI Youhong YANG Shiqi YANG Shujing YANG Zhengli |
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| Institution: | ZHANG Ai-ping1,LIU Ru-liang2,LI You-hong2,YANG Shi-qi1,YANG Shu-jing1,YANG Zheng-li1(1.Institute of Environment and Sustainable Development in Agriculture,CAAS,Beijing 100081,China,2.Institute of Agricultural Resource and Environment,Academy of Ningxia Agroforestry Sciences,Yinchuan,Ningxia 750002,China) |
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| Abstract: | A field experiment was carried out to study the effects of P fertilizer on yield of spring wheat,N fertilizer absorption characteristics and NO3--N accumulation in Yellow River irrigation area of Ningxia.The result showed that P fertilizer application increased significantly grain yield and straw yield.The yield of treatment P120 was higher than that of other treatments,which was 6215 kg/hm2.The amount of N accumulation of spring wheat increased during the period from jointing to filling,but decreased by 7.... |
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| Keywords: | spring wheat yield phosphate fertilizer N absorption characteristic NO3--N accumulation |
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