| 不同施氮制度对陇中黄土高原丘陵沟壑区农田土壤碱解氮分布及产量的影响 |
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| 引用本文： | 席春艳,蔡立群.不同施氮制度对陇中黄土高原丘陵沟壑区农田土壤碱解氮分布及产量的影响[J].广东农业科学,2012,39(10):88-91. |
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| 作者姓名： | 席春艳 蔡立群 |
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| 作者单位： | 甘肃农业大学资源与环境学院/甘肃省干旱生境作物学重点实验室,甘肃兰州,730070 |
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| 基金项目： | 国家自然科学基金，甘肃省高等学校研究生导师科研计划项目 |
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| 摘 要： | 通过设置在甘肃省定西市安定区李家堡镇的长期免耕条件下不同施肥制度对春小麦氮肥后效试验点,研究了免耕条件下不同施氮制度对春小麦氮肥后效及最佳施肥量,采用氢氧化钠-硼酸碱解扩散法测定0～200 cm土层土壤碱解氮的含量,结果表明:在免耕条件下,经过7年不同施氮水平处理,各处理表层0～10 cm土层碱解氮含量均高于其他土层,...
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| 关 键 词： | 黄绵土 产量 土壤碱解氮 春小麦 |
Effect of different nitrogen system on the distribution and yield of alkali-hydrolyzed nitrogen in farmland soils of hilly and gully regions in middle Gansu region of loess plateau |
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| XI Chun-yan
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CAI Li-qun.Effect of different nitrogen system on the distribution and yield of alkali-hydrolyzed nitrogen in farmland soils of hilly and gully regions in middle Gansu region of loess plateau[J].Guangdong Agricultural Sciences,2012,39(10):88-91. |
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| Authors: | XI Chun-yan CAI Li-qun |
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| Institution: | (College of Resources and Environmental Sciences,Gansu Agricultural University/ Gansu Provincial Key Laboratory of Arid Land Crop Science,Lanzhou 730070,China) |
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| Abstract: | Based on the nitrogen aftereffect test of the spring wheat in long-term No-till System of different nitrogen system in Lijiabu town,Anding district,Dingxi of Gansu province,Study the different nitrogen system nitrogen aftereffect test and the best nitrogen rate of the spring wheat,by determining 0~200 cm soil nitrogen content with the diffusion method of sodium hydroxide-borate alkaline hydrolysis,the results showed that: by long-term No-till,after 7 years’ different nitrogen system treatment,the 0~10 cm treated soil layer nitrogen contents were higher than other layers,accounting for 28.82% of the total soil nitrogen content,which revealed an obvious phenomenon of surface layer accumulation.By contrasting the content of 0~200 cm soil nitrogen,it concluded that the fertilizer rate of the first cropping season had an obvious effect on the content of 0~110 cm soil nitrogen and its aftereffect was significant;the nitrogen rate of 105 kg/hm2 was the best.In order to provide the scientific basis for the rain-fed farmland to use nitrogen fertilizer reasonably,enhance the efficiency of nitrogen fertilizers and assess the quality of farmland soil environment in hilly and gully regions in middle gansu region of loess plateau. |
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| Keywords: | loessial soil yield soil alkali-hydrolyzed nitrogen spring wheat |
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