植物营养与肥料学报2010,16(3)：522-527 Plant Nutrition and Ferilizer Science
氮肥运筹对水稻养分吸收特性及稻米品质的影响潘圣刚"，翟晶1,2，曹凑贵1*，蔡明历"，王若涵"，黄胜奇1，李进山3
（1华中农业大学作物裁培与生理生态研究中心，潮北武汉430070；2江西省烟叶科学研究所，
江西南昌330029；3随州市农业技术推广中心，朗北随州441300）
摘要：以水稻品种扬两优6号为材料，研究了田间条件氮肥运筹对水稍养分吸收及产量和品质的影明。结果表明，高氮处理（Nzm）成熟期氮素积累总量、磷素积累总量和钾系积累总量分别比中鼠（Nis）和低氮处理（Ng）增加了 21.5%、18.5%、18.3%和134.6%、127.0%和82.7%；产量增加了10.4%和39.6%。在相同鼠索水平下，采用B种施肥比例（基肥：分柴肥：穗粒肥=30%：20%：50%），水稽成热期氮素积累总量比A处理（基肥：分票肥：穗粒肥= 40%：30%：30%)增加了15.4%，产量提高了7.3%。在高氮处理(N%）条件下，采用B施肥比例，蛋白质含量显著提
高，直链淀粉显著降低，但提高了稍米的垩百度而使稍米外观品质变劣。关键词：氮肥运筹；养分吸收；品质；水箱
中图分类号：S511.062
文献标识码：A
文章编号：1008505X(2010)03052206
Effectsofnitrogenmanagementpracticesonnutritionuptake
andgrainqualitiesofrice
PAN Sheng-gang', ZHAI Jing/-2, CAO Cou-guil' , CAI Ming-li', WANG Ruo-han', Huang Sheng-qi', LI Jin-shan( I Crop Production and Physiology Cenier, Huashong Agriculural Unieersily, Wuhan, Hubei 430070, China;
2 Tobacoo Science Research Institure, Nanchang, Jiangxi 330029, China;
3 Extended Centre of Agriculture & Technology, Suithou city, Hubei 441300, China)
Abstract: Effects of nitrogen management practices on nutrition uplake and grain qualities of rice were examined using a rice cultivar, Yanglianyou 6, in a field study. The nitrogen fertilizer was applied in three splits, namely, 40% as basal, 30% at 10 days after transplanting (DAT) and 30% at 36 DAT (403030), and 30% as basal, 20% at 10 DAT and 50% at 36 DAT (302050), and the N application rates were set to N 0, 150 and 240 kg/ha, expressed as No, Nis0 and N2o, respectively. Compared to the Niso and No treatments, total nitrogen accumulation (TNA), total phosphorus accumulation (TPA) and total potassium accumulation (TKA) of the N2ao treatment at maturity stage are increased by 21.5%, 18.5%, 18.3% and 134.6%, 127.0%, 82.7%, and rice yields are increased by 10.4% and 39.6%, respectively. Under the same nitrogen application rate, TNA and yield of the 302050 split are 15.4% and 7.3% higher than those of the 403030 split at the maturity stage, The grain protein of rice is improved significantly; while grain amylose content is decreased, and the quality of appearance is worsen due to the improvement of chalkyness of grain under the N2o treatment with the 302050 split.
Key words: nitrogen management practices; nutrition uptake; quality; rice
氮、磷、钾是水稻正常生长必不可少的营养元素，氮对光合器官的建成具有重要作用；磷增加分巢，促进穗的形成及淀粉的合成；钾有助于光合产
收稿日期：2009-04-13
接受日期：2009-11-16
物的运输["]。三者对产量的贡献同等重要，且它们在作物体内的作用并非孤立，而是通过有机物的形成和转化相互联系。已有研究表明，充足的养分对
基金项目：国家粮食率产科技工程项目(2006BAD02A02)资助。
作害简介：雷圣刚（1976—一)，男，河南驻马店人，博士研究生，主要从事水稻裁培生理研究。
Tel;02787283775,E-mil: pmshenggang2008@126.com。通讯作者E-mil:cgi@mil.bau.ed.cm 万方数据