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| 长期不施磷肥对旱地红壤养分比例与玉米产量的影响 | |
| 引用本文： | 于天一,李玉义,逄焕成,王伯仁,隋方功.长期不施磷肥对旱地红壤养分比例与玉米产量的影响[J].中国土壤与肥料,2010(2). |
| 作者姓名： | 于天一 李玉义 逄焕成 王伯仁 隋方功 |
| 作者单位： | 1. 青岛农业大学资源环境学院,山东,青岛,266109 2. 中国农业科学院农业资源与农业区划研究所,北京,100081 3. 中国农业科学院红壤试验站,湖南,祁阳,421000 |
| 基金项目： | 973计划，中央级公益性科研院所基本科研业务费专项资金项目 |
| 摘 要： | 在湖南祁阳国家红壤肥力与肥料效益长期监测基地,于2008年对已有18年旱地红壤肥料试验历史的不施肥、NK、NP、PK、NPK处理下玉米产量、pH以及养分状况等指标进行了研究.结果表明,长期不施磷肥、只施氮钾肥导致玉米绝产.施用磷肥有极显著的增产作用,其中NP、PK与NPK处理分别比不施肥处理玉米增产33.2%、66.39%与151.45%.施磷的增产作用主要体现在玉米穗粒数、百粒重以及公顷穗数的增加.长期施用氮肥造成了土壤酸化,尤以NK处理酸化严重(pH值降至4.1),导致玉米产量连年下降.长期不施磷肥、只施氮钾肥,导致土壤全磷量和有效磷量降低,而全氮、全钾、碱解氮、有效钾量增加,表现为土壤氮磷钾养分比例严重失衡.NK处理的土壤氮磷钾全量比例为2.8:1:44.5,其它施磷处理的为1.09～1.32:1:17.96～19.36;NK处理的土壤氮磷钾速效量为31:1:57,其它施磷处理的为0.7～1.16:1:1.07～4.6. |
| 关 键 词： | 长期施肥 磷肥 红壤 玉米 酸化 养分失衡 |
Effects of long-term no phosphorus fertilization to upland red soil nutrients ratio and maize yield |
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| YU Tian-yi,LI Yu-yi,PANG Huan-cheng,WANG Bo-ren,SUI Fang-gong.Effects of long-term no phosphorus fertilization to upland red soil nutrients ratio and maize yield[J].Soil and Fertilizer Sciences in China,2010(2). | |
| Authors: | YU Tian-yi LI Yu-yi PANG Huan-cheng WANG Bo-ren SUI Fang-gong |
| Institution: | YU Tian-yi1,LI Yu-yi2,PANG Huan-cheng2,WANG Bo-ren3,SUI Fang-gong1 (1.College of Resource , Environment,Qingdao Agricultural University,Qingdao 266109,2.Institute of Agricultural Resources , Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,3.Red Soil Experimental Station,Qiyang 421000) |
| Abstract: | A fixed-site long-term fertilization experiments were carried out in 2008 in Qiyang Red Soil Fertility and Fertilizer Efficiency Long-Term Monitoring Base to study the effect of CK,NK,NP,PK and NPK treatments which were founded before 18 years on upland red soil nutrients,pH and maize yield.The results showed that,long-term application of only nitrogen and potassium fertilizer but no phosphorus fertilizer treatment caused no yield on maize.Application of P fertilizer could increase maize yield significantly... |
| Keywords: | long-term fertilization phosphorus fertilizer red soil maize acidity nutrients imbalance |
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