| 双季稻种植下洞庭湖区不同类型土壤连续施用控释氮肥的效应研究 |
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| 引用本文： | 鲁艳红,廖育林,谢坚,戴平安.双季稻种植下洞庭湖区不同类型土壤连续施用控释氮肥的效应研究[J].中国农学通报,2011,27(7):170-176. |
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| 作者姓名： | 鲁艳红 廖育林 谢坚 戴平安 |
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| 作者单位： | 1. 湖南省土壤肥料研究所,长沙,410125;湖南农业大学资源与环境学院,长沙,410128;农业部望城水稻土生态环境重点野外观测实验站,长沙,410125
2. 湖南省土壤肥料研究所,长沙,410125;农业部望城水稻土生态环境重点野外观测实验站,长沙,410125 |
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| 基金项目： | 国家"十一五"科技支撑计划，湖南省农业科学院科技创新项目 |
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| 摘 要： | 在洞庭湖区3种主要类型土壤上进行连续4年的微区试验，研究水稻控释氮肥在双季水稻种植体系下的连续施用效应。试验设不施肥（CK）、尿素、等N量控释氮肥及70%N量控释氮肥4个处理。结果表明，等N量控释氮肥处理产量最高，在河沙泥、紫潮泥和红黄泥上平均比尿素处理分别增产10.3%、8.0%和2.4%，70%N量控释氮肥处理分别增产6.1%、2.6%和-0.8%；在3种土壤上早、晚稻及全年平均吸N量均表现为等N量控释氮肥>70%N量控释氮肥>尿素>对照。等N量控释氮肥处理在上述3种土壤上的肥料利用率分别为60.7%、59.6%和56.3%，比尿素处理分别高23.8%、19.4%和16.3%，早稻随施用年份的延长其利用率呈增加趋势，且高于70%N量控释氮肥处理，晚稻连施3年时利用率由上升转呈下降。连续施用控释氮肥可缓解土壤氮素肥力和有机碳含量的下降，特别是在河沙泥稻田中。施用控释氮肥有利于水稻增产、氮肥利用率的提高及土壤培肥。
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| 关 键 词： | 藤三七 藤三七 氮肥 钾肥 叶片产量 品质 |
| 收稿时间： | 2010/8/24 0:00:00 |
| 修稿时间： | 2010/10/11 0:00:00 |
Effect of Continuous Applying Controlled Release Nitrogen Fertilizer in Various Types of Soil of Dong-Ting Lake Region under Double Rice Cropping System |
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| Lu Yanhong,Liao Yulin,Xie Jian,Dai Ping'an.Effect of Continuous Applying Controlled Release Nitrogen Fertilizer in Various Types of Soil of Dong-Ting Lake Region under Double Rice Cropping System[J].Chinese Agricultural Science Bulletin,2011,27(7):170-176. |
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| Authors: | Lu Yanhong Liao Yulin Xie Jian Dai Ping'an |
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| Institution: | Lu Yanhong 1,2,3,Liao Yulin 1,Xie Jian 1,Dai Ping ' an 1,3 (1 Soil and Fertilizer Institute of Hunan Province,Changsha 410125,2 College of Resources and Environment,Hunan Agricultural University,Changsha 410128,3 Key Field Monitoring Experimental Station for Reddish Paddy Soil Eco-environment in Wangcheng,Ministry of Agriculture of China,Changsha 410125) |
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| Abstract: | Effects of continuous applying controlled release nitrogen fertilizer under double rice cropping system were studied by modeling 3 types of paddy soils in Dong-Ting Lake area using micro-plot trials for 4 years.4 treatments as no fertilizer (CK),urea,controlled release nitrogen fertilizer (CRNF) and 70% controlled release nitrogen fertilizer (70% CRNF) were designed.The results showed that the yield in treatments with controlled release nitrogen fertilizer (CRNF) at N 150 kg/hm 2 were increased by 10.3% ,8.... |
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| Keywords: | double rice controlled release nitrogen fertilizer continuous fertilization yield fertilizer use efficiency soil fertility |
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