[1]黄强,郑顺林,郭函,等.氮增效剂对马铃薯叶片及土壤氮的影响[J].江苏农业学报,2019,(05):1087-1094.[doi:doi:10.3969/j.issn.1000-4440.2019.05.013]
　HUANG Qiang,ZHENG Shun-lin,GUO Han,et al.Effects of nitrogen synergist on nitrogen in potato leaves and soil[J].,2019,(05):1087-1094.[doi:doi:10.3969/j.issn.1000-4440.2019.05.013]
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氮增效剂对马铃薯叶片及土壤氮的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年05期
页码:
1087-1094
栏目:
耕作栽培·资源环境
出版日期:
2019-10-31

文章信息/Info

Title:
Effects of nitrogen synergist on nitrogen in potato leaves and soil
作者:
黄强1; 郑顺林1; 2; 郭函1; 龚静1; 王湖川1; 袁继超1; 何卫3
(1.四川农业大学农业部西南作物生理生态与耕作重点实验室，四川成都611130；2.农业部薯类作物遗传育种重点实验室/成都久森农业科技有限公司,四川成都610500；3.四川省农业科学院作物研究所，四川成都610066)
Author(s):
HUANG Qiang1; ZHENG Shun-lin1; 2; GUO Han1; GONG Jing1; WANG Hu-chuan1; YUAN Ji-chao1; HE Wei3
(1. Sichuan Agricultural University/Key Laboratory of Crop Physiology, Ecology and Cultivationin Southwest China, Ministry of Agricultural, Chengdu 611130， China; 2. Key Laboratory of Potato Crop Genetics and Breeding, Ministry of Agriculture/ Chengdu Jiusen Agricultural Technology Co., Ltd., Chengdu 610500， China; 3.Crop Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066， China)
关键词:
马铃薯; 氮增效剂; 氮素转化; 氮肥浓度
Keywords:
potato;  nitrogen synergist;  nitrogen transformation;  nitrogen fertilizer concentration
分类号:
S532
DOI:
doi:10.3969/j.issn.1000-4440.2019.05.013
文献标志码:
A
摘要:
采用随机区组试验，研究不同施氮水平下，氮增效剂对土壤铵态氮含量、硝态氮含量、马铃薯叶片硝态氮含量及谷氨酰胺合成酶活性的影响，为氮增效剂的合理使用提供理论依据。结果表明，氮增效剂双氰胺(DCD)、2-氯-6(三氯甲基)吡啶(CP)能显著提高土壤铵态氮含量、土壤铵硝比，将土壤硝态氮、叶片硝态氮维持在低水平状态，延长尿素肥效，减少马铃薯植株硝酸盐含量，提高谷氨酰胺合成酶活性；正丁基硫代磷酰三胺(NBPT)对土壤铵硝比、叶片氮素影响不显著，但能显著抑制马铃薯生育前期土壤脲酶活性。随着生育期的推移，氮增效剂DCD、CP作用效果在低氮水平下快速下降，并在苗期效果最优，显著提高了低氮水平下土壤铵态氮含量及铵硝比；在中氮水平下作用效果先升后降，在块茎形成期作用效果最优，显著提高了中氮水平下土壤铵态氮含量及铵硝比。说明，氮增效剂DCD、CP能显著提高春马铃薯土壤铵态氮、铵硝比，降低土壤及叶片硝态氮含量，延长尿素供氮时间；CP比DCD作用时效更长，更稳定，NBPT作用不显著。
Abstract:
In order to provide theoretical basis for the rational use of nitrogen synergists, the effects of nitrogen synergists on soil ammonium nitrogen content, soil nitrate nitrogen content, nitrate nitrogen content in potato leaves and glutamine synthetase activity under different nitrogen application levels were studied by randomized block experiment. The results showed that nitrogen synergists DCD and CP could significantly increase soil ammonium nitrogen content and soil ammonium-nitrate ratio, keep soil nitrate nitrogen and leaf nitrate nitrogen in a low level, prolong urea fertilizer efficiency, reduce nitrate content of potato plants and increase glutamine synthetase activity. NBPT had no significant effect on soil ammonium-nitrate ratio and leaf nitrogen, but it could significantly inhibit soil urease activity in the early growth stage of potato. The effect of nitrogen synergist DCD and CP on soil ammonium nitrogen content and ratio of ammonium to nitrate at low nitrogen application level decreased rapidly with the development of growth period, and the effect was the best at seedling stage. The effect on soil ammonium nitrogen content and ratio of ammonium to nitrate increased forst and then decreased at medium nitrogen application level, and the effect was the best at tuber formation stage. Furthermore, the content of soil ammonium nitrogen and ratio of ammonium to nitrate increased significantly at low and medium nitrogen application level. In condusion, DCD and CP could significantly increase ammonium nitrogen and ammonium-nitrate ratio in spring potato soil, reduce the content of nitrate nitrogen in soil and leaves, and prolong the nitrogen supply time of urea. The effect of CP was longer and more stable than that of DCD, while NBPT had no significant effect.

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备注/Memo

备注/Memo:
收稿日期：2018-12-20 基金项目：国家重点研发计划项目(2018YFD0200808)；四川省育种攻关及配套项目(2016NYZ0051-5、2016NYZ0032)；四川马铃薯创新团队支持项目 (2016NYZ0051-5、2016NYZ0032) 作者简介：黄强(1992-)，男，重庆人，硕士研究生，研究方向马铃薯高产栽培。(E-mail)1020136338@qq.com 通讯作者：郑顺林，(Tel)13882443935
更新日期/Last Update: 2019-11-11