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作物学报 ›› 2012, Vol. 38 ›› Issue (08): 1494-1503.doi: 10.3724/SP.J.1006.2012.01494

• 耕作栽培·生理生化 • 上一篇    下一篇

不同质地土壤下缓释尿素与常规尿素配施对水稻产量及其生长发育的影响

张小翠1，戴其根1,2,*，胡星星1，朱德建3，丁秀文1，马克强1，张洪程1,2，朱聪聪1   

  1. 1 扬州大学 / 江苏省作物遗传生理重点实验室，江苏扬州225009；2 扬州大学 / 农业部长江流域稻作技术创新中心，江苏扬州225009；3 姜堰市土肥站，江苏泰州225529
  • 收稿日期:2011-12-15 修回日期:2012-04-16 出版日期:2012-08-12 网络出版日期:2012-06-04
  • 通讯作者: 戴其根, E-mail: qgdai2000@126.com, Tel: 0514-87979220
  • 基金资助:

    本研究由国家自然科学基金项目(30971732,30671223)资助。

Effects of Slow-Release Urea Combined with Conventional Urea on Rice Output and Growth in Soils of Different Textures

ZHANG Xiao-Cui1,DAI Qi-Gen1,2,*,HU Xing-Xing1,ZHU De-Jian3,DING Xiu-Wen1,MA Ke-Qiang1,ZHANG Hong-Cheng1,2,ZHU Chong-Chong1   

  1. 1 Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Yangzhou University, Yangzhou 225009, China; 2 Innovation Center of Rice Cultivation Technology in Yangtze Valley, Ministry of Agriculture / Yangzhou University, Yangzhou 225009, China; 3 Earthy Fertilizer Station of Jiangyan County, Taizhou 225529, China
  • Received:2011-12-15 Revised:2012-04-16 Published:2012-08-12 Published online:2012-06-04
  • Contact: 戴其根, E-mail: qgdai2000@126.com, Tel: 0514-87979220

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1299

被引次数

40

摘要： 以早熟晚粳南粳44为材料，分别在2种质地的土壤上，研究270 kg hm-2施氮条件下, 2种缓释尿素(硫包衣尿素SCU)单施及与常规尿素(PU)按2种不同比例混配一次性基施对水稻产量及其生长发育的影响。结果表明，与PU分施相比，SCU2单施与SCU1+PU(1∶1)、SCU1+PU(2∶1)及SCU2+PU(2∶1)配施处理水稻产量、生长中后期氮素吸收量、氮素吸收利用率与偏生产力、干物质积累以及茎鞘可用性糖颖花比均显著提高，抽穗后期根系α-萘胺氧化量维持较高水平，下降幅度小；产量、氮素吸收量、氮肥吸收利用率、偏生产力及干物质积累量在黏土上略高于在沙土上；抽穗期与抽穗后10 d根系α-萘胺氧化量在黏土上低于在沙土上，抽穗后20 d、30 d在两种土上差异不大。SCU单施及与PU配施基本上能满足水稻生长需求，SCU1与PU配施效果明显优于单施；SCU2单施效果最佳，SCU2+PU(2∶1)次之，SCU2+PU(1∶1)效果不显著。

关键词: 缓释尿素, 水稻, 产量, 生长发育

Abstract: Public attentions have been increasingly paid to the slow-release fertilizer (sulfur-coated urea, or SCU) which has developed quickly during the last decade. In this research, a field experiment with 270 kg ha-1 N fertilizer application was conducted in two kinds of soil (sandy soil and clay soil) using the early maturing late japonica variety Nanjing44 as materials. The effects of fertilizing with sulfur-coated urea alone and mixing application of SCU and conventional urea (PU) on grain yield and plant growth were examined and compared. Results showed that compared with the treatment of PU applied alone, the treatments of SCU2, SCU2+PU(2:1), SCU1+PU(2:1) and SCU1+PU(1:1) showed significant increase in the rice yield, N accumulation, uptake and use efficiency, dry matter accumulation, ratio of stem-sheath usable carbohydrate to spikelets per panicle, and root α-NA oxidation ability that maintained a high level with a small reduction tendency. The grain yield, N uptake and use efficiency as well as dry matter accumulation in clay soil were slightly higher than those in sandy soil, and the root α-NA oxidation ability at heading and 10 days after heading were lower in clay soil than in sandy soil, while no apparent difference was found at 20 or 30 days after heading.In conclusion, the application of sulfur-coated urea or its combination with normal urea may both meet the basic needs of rice growth. Combination of SCU1 and PU has better effect than either fertilizer applied solely, the treatment of SCU2 has the best outcome, which is followed by treatment of SCU2+PU(2:1), and treatment of SCU2+PU(1:1) does not show a significant effect.

Key words: Slow-release urea, Rice, Grain yield, Growth and development

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