| 控释尿素对土壤硝态氮含量、氮素利用和小麦产量的影响 |
| |
| 引用本文： | 程文龙,武际,韩上,陈锋,夏伟光,李敏,王慧.控释尿素对土壤硝态氮含量、氮素利用和小麦产量的影响[J].中国土壤与肥料,2020(3):42-46. |
| |
| 作者姓名： | 程文龙 武际 韩上 陈锋 夏伟光 李敏 王慧 |
| |
| 作者单位： | 安徽省农业科学院土壤肥料研究所，养分循环与资源环境安徽省重点实验室，安徽 合肥 230031;安徽省濉溪县五铺农场，安徽 淮北 235188;安徽省郎溪县农业局，安徽 郎溪 242199 |
| |
| 基金项目： | 基金项目:安徽省科技重大专项(17030701055)；公益性行业科为 90d)。研专项(201503122)；安徽省农业科学院团队项目(2019YL044)；安徽省重点研究与开发计划项目(1704e1002237)；国家重点研发计划项目(2018YFD0300901)。 |
| |
| 摘 要： | 通过田间试验研究了全量施氮(240 kg/hm^2)和减氮20%(192 kg/hm^2)条件下,控释尿素对冬小麦生长发育及土壤硝态氮含量的影响。结果表明,小麦不同生长时期土层硝态氮均存在不同程度的淋失现象,尤以拔节期土层氮素淋失最为严重,拔节期普通尿素处理60~80和80~100 cm土层硝态氮含量达到了28.21和26.74 mg/kg,而控释尿素处理40~100 cm土层硝态氮含量仅为3.51~5.87 mg/kg,变化幅度小,且控释尿素处理耕层硝态氮含量显著高于普通尿素处理,尤以80%控释尿素处理的0~20 cm的硝态氮含量最高,达到了15.40 mg/kg。与普通尿素处理相比,控释尿素处理均对小麦产量有一定提升趋势,且显著提高了氮肥吸收利用率、氮肥农学利用率、氮肥偏生产力,其中以80%控释尿素处理提升幅度最大,分别提升了86.7%、90.8%和30.9%。
|
| 关 键 词： | 小麦 控释尿素 硝态氮 |
| 收稿时间： | 2019/6/1 0:00:00 |
Effects of controlled release urea on soil nitrate nitrogen content,nitrogen utilization and wheat yield |
| |
| CHENG Wen-long,WU Ji,HAN Shang,CHEN Feng,XIA Wei -guang,LI Min,WANG Hui.Effects of controlled release urea on soil nitrate nitrogen content,nitrogen utilization and wheat yield[J].Soil and Fertilizer Sciences in China,2020(3):42-46. |
| |
| Authors: | CHENG Wen-long WU Ji HAN Shang CHEN Feng XIA Wei -guang LI Min WANG Hui |
| |
| Institution: | (Soil and Fertilizer Research Institute,Anhui Academy of Agricultural Sciences,Ahui Provincial Key Laboratory of Nutrient Recycling,Resources and Environment,Hefei Anhui 230031;Wupu Farm of Suixi County,Huaibei Anhui 235118;Agricultural Bureau of Langxi County,Anhui Province,Langxi Anhui 242199) |
| |
| Abstract: | Field experiments were conducted to study the effects of controlled-release urea on the growth and development of winter wheat and soil nitrate nitrogen content under the conditions of total nitrogen application(240 kg/hm^2)and the reduction 20%of nitrogen(192 kg/hm^2).The results showed that nitrate nitrogen leaching occurred at different stages of wheat growth,especially at jointing stage.Nitrate nitrogen leaching was the most serious in 60~80 and 80~100 cm soil layers treated with common urea at jointing stage,which reached 28.21 and 26.74 mg/kg,while nitrate nitrogen content in 40~100 cm soil layers treated with controlled-release urea was only 3.51~5.87 mg/kg,with little change and controlledrelease.Nitrate nitrogen content in tillage layer of urea treatment was significantly higher than that of common urea treatment,especially in 0~20 cm of 80%controlled-release urea treatment,which reached 15.40 mg/kg.In addition,compared with ordinary urea treatment,controlled-release urea treatment had a certain increase trend in wheat yield,and significantly increased nitrogen absorption and utilization efficiency,nitrogen agronomic utilization efficiency,partial productivity of nitrogen fertilizer;among them,80%controlled-release urea treatment had the greatest increase,which increased 86.7%,90.8%and 30.9%respectively. |
| |
| Keywords: | wheat controlled release urea nitrate nitrogen |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国土壤与肥料》浏览原始摘要信息 |
| 点击此处可从《中国土壤与肥料》下载免费的PDF全文 |
|
