|
|||||
|
|
| 灌溉量和施氮量对冬小麦产量和土壤硝态氮含量的影响 | |
| 作者姓名： | Jiang DY Yu ZW Xu ZZ |
| 作者单位： | 1. 山东农业大学农业部作物生理生态与栽培重点开放实验室,山东泰安271018;德州学院农学系,山东德州,253015 2. 山东农业大学农业部作物生理生态与栽培重点开放实验室,山东泰安,271018 3. 中国科学院植物研究所植被与环境变化国家重点实验室,北京,100093 |
| 基金项目： | 农业部小麦现代农业产业技术体系项目(nycytx-03); 国家自然科学基金项目(30871478)资助 |
| 摘 要： | 研究了大田条件下灌溉量和施氮量对小麦产量和土壤硝态氮含量的影响.结果表明:增加灌溉量,0～200 cm土层硝态氮含量呈先降后升又降的趋势.0～80 cm土层硝态氮含量显著低于对照,而80～200 cm土层硝态氮含量显著高于对照.随灌溉量的增加,土壤硝态氮向深层运移加剧,在成熟期,0～80 cm土层硝态氮含量降低,120～200 cm土层硝态氮含量升高,并在120～140 cm土层硝态氮含量出现高峰.灌溉量不变,施氮量由210 kg·hm-2增加到300 kg·hm-2,开花期、灌浆期、成熟期0～200 cm各土层土壤硝态氮含量显著升高.随灌溉量的增加,小麦籽粒产量先增加后降低,以全生育期灌溉量为60 mm的处理籽粒产量最高.增加施氮量,籽粒产量、蛋白质含量和蛋白质产量显著提高.本试验中,施氮量为210 kg.hm-2、两次灌溉总量为60 mm的处理籽粒产量、蛋白质含量、蛋白质产量和收获指数均较高,且土壤硝态氮损失少,是较合理的水氮运筹模式. |
| 关 键 词： | 小麦 产量 灌溉量 施氮量 土壤硝态氮 |
Effects of irrigation amount and nitrogen fertilization rate on wheat yield and soil nitrate content |
|
| Jiang DY,Yu ZW,Xu ZZ.Effects of irrigation amount and nitrogen fertilization rate on wheat yield and soil nitrate content[J].Chinese Journal of Applied Ecology,2011,22(2):364-368. | |
| Authors: | Jiang Dong-Yan Yu Zhen-Wen Xu Zhen-Zhu |
| Institution: | JIANG Dong-yan1,2,YU Zhen-wen1,XU Zhen-Zhu3(1Ministry of Agriculture Key Laboratory of Crop Ecophysiology and Cultivation,Shandong Agricultural University,Tai'an 271018,Shandong,China,2Department of Agronomy,Dezhou University,Dezhou 253015,3State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China) |
| Abstract: | A field experiment was conducted to study the effects of irrigation amount and nitrogen fertilization rate on wheat yield and soil nitrate content.With the increase of irrigation amount,the soil nitrate content in 0-200 cm layer at the same nitrogen fertilization rates had a trend of decrease-increase-decrease.Under irrigation,the soil nitrate content was significantly lower in 0-80 cm layer while significantly higher in 80-200 cm layer,compared with the control.As the irrigation amount increased,the transl... |
| Keywords: | wheat yield irrigation amount nitrogen fertilization rate soil nitrate |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |