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当前位置: 首页 > 文章 > 不同氮肥管理方式对华北粮田2排放和作物产量的影响分析 农业资源与环境学报 2016,33 (004) 340-348
Position: Home > Articles > Effects of Different Nitrogen Management Methods on Soil N2O Emission and Crop Yield of Grain Field in North China Journal of Agricultural Resources and Environment 2016,33 (004) 340-348

不同氮肥管理方式对华北粮田2排放和作物产量的影响分析

作  者：
舒晓晓;王艳群;李迎春;彭正萍;魏珊珊;石新丽;赵延伟
单  位：
中国农业科学院农业环境与可持续发展研究所;河北农业大学资源与环境科学学院
关键词：
小麦;玉米;氮肥;不同管理方式;N2O排放;产量
摘  要：
通过华北小麦和玉米田已发表文献分析,明确不同施氮量、氮肥基追比及氮素调控措施对土壤N2O排放和作物产量的影响。结果表明:高氮水平下减少氮肥用量并调整基追比有助于减少土壤N2O排放;添加硝化抑制剂双氰胺(DCD)对小麦和玉米产量的提高和土壤N2O的减排效果均较好。兼顾华北粮田N2O减排和作物产量,小麦季推荐合理施氮量167~174 kg·hm-2,基追比1:1,添加DCD,土壤N2O总排放量为0.31 kg·hm-2,籽粒产量6200 kg·hm-2以上;玉米季推荐合理施氮量177~181 kg·hm-2,基追比2:3~1:2,添加DCD,土壤N2O总排放量1.70 kg·hm-2,籽粒产量9000 kg·hm-2以上。
译  名：
Effects of Different Nitrogen Management Methods on Soil N2O Emission and Crop Yield of Grain Field in North China
关键词：
wheat%maize%nitrogen fertilizer%different management methods%N2O emission%crop yield
摘  要：
Through the published literature analysis of wheat and maize field in North China, this study investigated the effects of different management methods of nitrogen(N)application rates, basal/topdressing ratios and N control measures on the soil N2O emission and crop yield. The results showed that reducing N application rates and adjusting basal/top dressing ratios under high N level could decrease soil N2O emissions. Besides, N application with nitrification inhibitor dicyandiamide(DCD)was an effective practice for wheat/maize yield enhance-ment and soil N2O emission reduction. In order to reduce the soil N2O emission as well as ensure crop yield production in North China, the optimal N application rate of 167~174 kg·hm-2 at basal/top dressing ratio 1:1 with DCD was recommended for wheat production. As a result, soil N2O total emission was 0.31 kg·hm-2 and wheat grain yield reached more than 6 200 kg·hm-2. For maize production, the optimal N appli-cation rate of 177~181 kg·hm-2 at basal/top dressing ratios 2:3~1:2 with DCD was regarded as the best practice. Soil N2O total emission was 1.70 kg·hm-2 and maize grain yield exceeded 9 000 kg·hm-2.

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