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作物学报 ›› 2016, Vol. 42 ›› Issue (04): 619-623.doi: 10.3724/SP.J.1006.2016.00619

• 研究简报 • 上一篇    

氮素形态及供应时期对马铃薯生长发育与产量的影响

苏亚拉其其格,秦永林,贾立国,樊明寿*   

  1. 内蒙古农业大学农学院，内蒙古呼和浩特 010019
  • 收稿日期:2015-08-01 修回日期:2016-01-11 出版日期:2016-04-12 网络出版日期:2016-01-19
  • 通讯作者: 樊明寿, E-mail: fmswh@126.com, Tel: 0471-4307390
  • 基金资助:

    本研究由国家自然科学基金项目(31160411)和内蒙古重大专项“马铃薯种薯繁育与商品薯生产中资源高效利用技术的创新”项目资助。

Effects of Nitrogen Forms and Its Application Time on Plant Growth and Tuber Yield of Potato

SUYALA Qi-Qige,QIN Yong-Lin,JIA Li-Guo,FAN Ming-Shou*   

  1. College of Agronomy, Inner Mongolia Agricultural University, Hohhot 010019, China
  • Received:2015-08-01 Revised:2016-01-11 Published:2016-04-12 Published online:2016-01-19
  • Contact: 樊明寿, E-mail: fmswh@126.com, Tel: 0471-4307390
  • Supported by:

    This study was supported by the National Natural Science Foundation of China (31160411), Inner Mongolia Major Special Project “Innovation of Resource Use Efficiency Improvement Technology during Seed Potato Propagation and Commercial Potato Production”.

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摘要：

选用马铃薯克新1号和费乌瑞它2个品种，于2013—2014年在沙培条件下，研究了氮素形态及供应时间对马铃薯植株生长、块茎形成及发育的影响。结果表明，在块茎形成前供应NO3-N与NH4-N两种条件下，马铃薯植株高度、叶面积、叶片SPAD值、整株干物质积累量以及块茎重量无显著差异，而块茎形成后供应NH4-N的马铃薯叶片SPAD值、植株生长速度及块茎产量均显著高于NO3-N处理；块茎形成前供应NO3-N的植株结薯数显著高于NH4-N处理，但是氮素形态对干物质在马铃薯块茎中的分配比例无显著影响。因此，马铃薯的氮素养分管理应根据商品薯和种薯生产的不同目标，在块茎形成前后分别供应适宜形态的氮素。

关键词: 马铃薯, 氮素形态, 供应时期, 生长发育, 产量

Abstract:

The effects of nitrogen form on potato plant growth, tuber formation and tuber yield were studied under sand cultural condition using cultivars Kexin 1 and Favorita in 2013 and 2014. The results showed that there were no significantly different influences on plant height, leaf area, leaf SPAD value, plant dry matter accumulation and tuber weight when applied nitrite (NO3-N) or ammonia (NH4-N) before tuberization. However, there were higher leaf SPAD value，faster plant growth and higher tuber yield under application of NH4-N after tuberization compared with that of NO3-N. Moreover, no significant effect was detected on tuber dry matter distribution under different forms of nitrogen applied. Thus, potato nitrogen management including N fertilizer form and its application time should be adjusted according to the aim of commercial potato production or seed potato propagation.

Key words: Potato, N form, Application time, Growth, Yield

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