中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 渗灌不同灌水控制上下限组合对保护地土壤脲酶活性的影响 土壤通报 2011,42 (6) 1393-1398
Position: Home > Articles > Effects of Different Combinations of Upper and Lower Limits of Subsurface Irrigation on Urease Activity in Protected Field Chinese Journal of Soil Science 2011,42 (6) 1393-1398

渗灌不同灌水控制上下限组合对保护地土壤脲酶活性的影响

作  者：
王芳;张玉龙;肖质秋;魏巍;袁静超
单  位：
沈阳农业大学土地与环境学院辽宁省农业资源与环境重点实验室
关键词：
渗灌;灌水控制上限与下限;脲酶活性;铵态氮
摘  要：
以不同灌水控制上限(土壤水吸力6 kPa、9 kPa、12 kPa)和下限(土壤水吸力30 kPa、45 kPa、60k Pa)组合为试验处理,进行保护地番茄栽培渗灌灌水效果试验;试验于灌水处理后的第30 d采集土样,以各处理0～10 cm、10～20 cm、20～30 cm土层土壤为样本,测定土壤脲酶活性、铵态氮含量等指标,探讨灌水控制上限、下限对土壤脲酶活性的影响,分析脲酶活性与土壤含水量、铵态氮含量之间关系。结果表明:不同灌水控制上限、下限,即水分条件可显著影响土壤脲酶活性,三个深度层次土壤脲酶活性均以灌水控制上限12 kPa、下限60 kPa组合为最高;0～10 cm土层土壤脲酶活性与铵态氮含量呈显著的指数正相关关系1,0～20 cm、20～30 cm土层土壤脲酶活性与铵态氮含量间虽然也表现出了一定的正相关关系,但未达到5%显著水平。因此,降低灌水时土壤含水量和适量减少单次灌水量,有利于提高土壤脲酶活性,进而改善土壤氮素形态转化状况和对植物的氮素营养供应。
译  名：
Effects of Different Combinations of Upper and Lower Limits of Subsurface Irrigation on Urease Activity in Protected Field
作  者：
WANG Fang,ZHANG Yu-long,XIAO Zhi-qiu,WEI Wei,YUAN Jing-chao(College of Land and Environment,Shenyang Agricultural University, Liaoning Key Laboratory of Agricultural Resource and Environment,Shenyang 110866,China)
关键词：
Subsurface irrigation;Upper and lower limits of irrigation control;Urease activity;Ammonium nitrogen
摘  要：
Subsurface irrigation experiment of tomato in protected field was studied at different irrigation control upper limits(soil water suction being 6 kPa,9 kPa and 12 kPa) and lower limits(soil water suction being 30 kPa,45 kPa and 60 kPa).In this study,soil urease activity,water contents and the contents of ammonium nitrogen in three soil layers(0-10 cm,10-20 cm,20-30 cm) were analyzed at 30 DAI(days after irrigation).The results showed that urease activity was significantly affected by soil water status,or the irrigation control upper and lower limits.The highest urease activity in three soil layers was obtained in the treatment of irrigation control upper 12 kPa and lower limits 60 kPa.There was a positive exponential relationship between urease activity and the content of ammonium nitrogen in all soil layers at 5% level in 0-10 cm layer,but no significantly positive correlation was observed(at 5% level) in 10-20 cm and 20-30 cm layers.Reducing soil moisture and irrigation quato could adjust soil enzyme activity and improve the transformation of soil nitrogen and the ability to plants.

相似文章

导出引用
计量
文章访问数: 14
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46