摘要
为探讨白菜型冬油菜生长期土壤氮素组分含量的变化规律。以不同品种的白菜型冬油菜为试验材料,采用大田试验,对其不同生长期土壤全氮、铵态氮、硝态氮、碱解氮、矿化氮、酸解氮、氨基糖态氮、氨基酸态氮、非酸解氮和未知态氮含量进行研究。结果表明:白菜型冬油菜生长期土壤全氮、酸解氮和未知态氮含量在枯叶期最高,依次为1.24 g/kg、694.52 mg/kg和539.50 mg/kg;硝态氮含量在幼苗期最高为33.04 mg/kg;碱解氮和铵态氮含量在返青期最高,依次为40.68 mg/kg和21.55 mg/kg;矿化氮和氨基酸态氮含量在收获期最高,依次为1583.25 mg/kg和63.45 mg/kg;枯叶期和返青期是冬油菜越冬期,其与幼苗期、苗期、花期土壤氮素各组分含量有差异。土壤全氮、铵态氮、非酸解氮含量在白菜型冬油菜不同生长期呈"升-降"趋势;硝态氮和氨基酸态氮含量呈"降-升"趋势;碱解氮和氨基糖态氮含量呈"降-升-降"趋势;矿化氮、酸解氮和未知态氮含量呈"升-降-升"趋势。
To evaluate changes of soil nitrogen component and content of winter rapeseed in different growth periods,winter rapeseed varieties were planted under field growth condition,contents of total nitrogen,ammonium nitrogen,nitrate nitrogen,alkali-hydrolyzed nitrogen,mineralized nitrogen,acid-hydrolyzed nitrogen,amino sugar nitrogen,amino acid nitrogen,non-acid-hydrolyzed nitrogen and unknown nitrogen were tested.The results showed that the content of total nitrogen,acid-dissociated nitrogen and unknown nitrogen in perish period were the highest,1.24 g/kg,694.52 mg/kg and 539.50 mg/kg,respectively.The content of nitrate nitrogen at seedling stage was the highest,33.04 mg/kg.The content of alkali-hydrolyzed nitrogen and ammonium nitrogen were the highest at the turning green stage,40.68 mg/kg and 21.55 mg/kg,respectively.The content of mineralized nitrogen and amino acid nitrogen were the highest at harvesting stage,1583.25 mg/kg and 63.45 mg/kg,respectively.The content of nitrogen in perish and turning green stage were significantly different from that at seedling and flowering stage.The"up-down"trend of content of total nitrogen,ammonium nitrogen and non-acidic nitrogen was observed in winter rapeseed during different growth periods,the"down-up"trend was showed in the content of nitrate nitrogen and amino acid nitrogen,the"down-updown"trend was found in the content of alkali-hydrolyzed nitrogen and aminoglycosaccharide nitrogen,and the"up-down-up"trend was observed in the content of mineralized nitrogen,acidolysis nitrogen and unknown nitrogen.
作者
王治江
许耀照
曾秀存
王凡
Wang Zhijiang;Xu Yaozhao;Zeng Xiucun;Wang Fan(College of Agricultural and Ecological Engineering Hexi University,Zhangye Gansu 734000;Key Laboratory of Hexi Corridor Resources Utilization of Gansu,Zhangye Gansu 734000;School of Life Sciences and Engineering Hexi University,Zhangye Gansu 734000)
出处
《中国农学通报》
2020年第18期80-86,共7页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金地区基金项目“白菜型冬油菜响应低温胁迫的质外体蛋白质组学研究”(31560397)
国家自然科学基金地区基金项目“西北寒旱区超强抗寒冬油菜陇油7号抗寒机理研究”(31660401)
关键词
白菜型冬油菜
生长期
氮素组分
含量
变化
winter rapeseed
growth period
nitrogen component
nitrogen content
change
作者简介
第一作者:王治江,男,1965年出生,甘肃高台人,高级实验师,本科。主要从事土壤肥料方面研究。通信地址:734000甘肃省张掖市甘州区环城北路846号河西学院农业与生态工程学院,E-mail:wangzhijiang0772@163.com;通讯作者:许耀照,男,1975年出生,甘肃榆中人,副教授,在读博士,主要从事作物生理生态与栽培方面研究。通信地址:734000甘肃省张掖市甘州区环城北路846号河西学院农业与生态工程学院,E-mail:xuyaaozhao@126.com。
