干旱区生态环境知识资源中心(Arid): 施氮量对宁夏旱区马铃薯块茎淀粉形成和产量的影响

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	施氮量对宁夏旱区马铃薯块茎淀粉形成和产量的影响
其他题名	Effects of Nitrogen Application Amount on Formation and Yield of Potato Tuber Starch in Ningxia Arid Region
	柳强娟; 康建宏; 吴佳瑞; 孙建波; 马雪莹; 王星强; 坚天才
来源期刊	核农学报
ISSN	1000-8551
出版年	2021
卷号	35 期号:5 页码:1000-8551
中文摘要	为探索不同施氮量对宁夏旱区马铃薯块茎淀粉形成和产量的影响机理,分别于2017年(平水年)和2019年(丰水年)在宁夏南部山区开展大田试验,以马铃薯栽培品种青薯9号为材料,采用单因素随机区组试验设计,以不施氮肥(N0)为对照,研究施纯氮量75(N1)、150(N2)、225 kg·hm~(-2)(N3)对马铃薯淀粉含量、淀粉形成关键酶及产量的影响。结果表明,随着施氮量的增加,总淀粉和支链淀粉含量呈先上升后下降的趋势,以N2最高,分别较N0显著提高21.23、26.42个百分点(2017年)和19.74、 24.93个百分点(2019年);而直链淀粉含量随着施氮量的增加而增加,在N3达到最高,比N0增加1.59个百分点(2017年)、1.78个百分点(2019年)。腺苷二磷酸葡萄糖焦磷酸化酶(AGPP)和淀粉分支酶(SBE)均以N2最高,分别较N0增加了57.38%、36.83%(2017年)和67.19%、29.01%(2019年);而可溶性淀粉合酶(SSS)和束缚态淀粉合酶(GBSS)活性则以N3最高,分别较N0增加33.90%、49.51%(2017年)和46.02%、51.00%(2019年)。相关、通径分析结果表明,淀粉含量与淀粉合成关键酶均呈正相关,AGPP、SSS、GBSS在淀粉合成过程中的直接贡献较大;与N0相比,N1~N3在2017年和2019年的产量分别增加了10.72%~21.02%和8.40%~16.30%,以N2的产量最优;综合产量回归曲线分析可知,达到最高产量的最佳施氮量为150~184(2017年)、150~196 kg·hm~(-2)(2019年)。因此,建议宁夏旱区马铃薯施氮量为150~200 kg·hm~(-2),该条件能有效提高淀粉形成关键酶活性,加快淀粉形成和积累,促进马铃薯产量增加,从而提高当地农民的经济收益。
英文摘要	For exploring the effect mechanism of different nitrogen application amounts impact on potato tuber starch formation and yield in Ningxia arid areas,field trials were carried out in the mountainous areas of southern Ningxia in 2017(normal year)and 2019(wet year)respectively.The potato cultivar Qingshu No.9 was used as the material and a single factor random Block experiment was designed,with no nitrogen fertilizer(N0)as the control,to study the effects of pure nitrogen application rate of 75(N1),150(N2),225 kg·hm~(-2)(N3)on potato starch content,key starch forming enzymes and yield.The results showed that with the increase of nitrogen application amount,the total starch and amylopectin content increased first and then decreased,with N2 being the highest,significantly increasing by 21.23,26.42 percentage point(2017)and 19.74、24.93 percentage point(2019);while the amylose content increased with the increase of nitrogen application amount,reaching the highest at N3,which was 1.59 percentage point(2017)and 1.78 percentage point(2019)higher than N0.Both adenosine diphosphate glucose pyrophosphorylase(AGPP)and starch branching enzyme(SBE)had the highest N2,which increased by 57.38%,36.83%(2017)and 67.19%,29.01%(2019)compared with N0,respectively;while soluble starch synthase(SSS)and bound starch synthase(GBSS)were the highest with N3,which increased by 33.90%,49.51%(2017)and 46.02%,51.00%(2019)respectively compared with N0.Correlation and general analysis show that starch content and key enzymes in starch synthesis have a positive correlation,and AGPP,SSS,and GBSS have a greater direct contribution to the process of starch synthesis;Compared with N0,the potato output of N1~N3 increased by 10.72%~21.02% and 8.40%~16.30% in 2017 and 2019,respectively.The yield of N2 is the best;the best nitrogen application rate to achieve the highest yield is 150-184(2017),150-196 kg·hm~(-2)(2019).Therefore,it is suggested that the nitrogen application amount of 150-200 kg·hm~(-2) for potato in arid areas of Ningxia can effectively increase the activity of key enzymes in starch formation,accelerate starch formation and accumulation,and promote the increase of potato production,thereby increasing the economic benefits of local people.
中文关键词	马铃薯 ; 氮素 ; 淀粉 ; 淀粉形成关键酶 ; 产量
英文关键词	potato nitrogen starch starch forming key enzyme yield
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6944204
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354329
作者单位	柳强娟, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 康建宏, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 吴佳瑞, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 孙建波, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 马雪莹, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 王星强, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 坚天才, 宁夏大学农学院, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	柳强娟,康建宏,吴佳瑞,等. 施氮量对宁夏旱区马铃薯块茎淀粉形成和产量的影响[J],2021,35(5):1000-8551.
APA	柳强娟.,康建宏.,吴佳瑞.,孙建波.,马雪莹.,...&坚天才.(2021).施氮量对宁夏旱区马铃薯块茎淀粉形成和产量的影响.核农学报,35(5),1000-8551.
MLA	柳强娟,et al."施氮量对宁夏旱区马铃薯块茎淀粉形成和产量的影响".核农学报 35.5(2021):1000-8551.