上海农业学报2019，Vol.35Issue(3)：63-70,8.DOI:10.15955/j.issn1000-3924.2019.03.12
秸秆全量还田条件下减量施氮与碳氮调控对稻麦轮作系统的影响
Effects of reducing nitrogen application and carbon/nitrogen regulation on rice-wheat rotation system under the condition of total straw returning to field
摘要
Abstract
Under the condition of returning total rice and wheat straw to field, the effects of different nitrogen application rates and different base-topdressing ratios of nitrogen fertilizer on soil physical and chemical properties, crop growth and yield were studied in order to provide reasonable fertilization technology support for rice-wheat rotation production. The results showed that compared with the treatment of nitrogen application rate 255 kg/hm2, the content of total phosphorus, available nitrogen, available phosphorus and available potassium in soil increased by 3. 60%, 6. 25%, 45.54% and 50.00% , respectively, and rice yield increased by 3.89% when the nitrogen application rate was 300 kg hm2 in rice season. Compared with the treatment of nitrogen application 210 kg/hm2, the content of total potassium, available nitrogen and available phosphorus increased significantly by 4.38%, 33.43% and 30.03%, respectively, when the nitrogen application rate was 255 kg/hm2 in wheat season. The wheat plant height increased significantly at turning-green stage, jointing stage and maturity stage, and the wheat yield increased by 2. 02%. With the increase of base fertilizer proportion, soil nutrients, plant height and yield increased significantly. Compared with the conventional treatment of 5:5 base-topdressing ratio of nitrogen fertilizer, the yields of rice and wheat increased by 12.95%—13.08% and 20.97%—21.77% , respectively, when the base-topdressing ratios of nitrogen fertilizer were 7: 3 and 8: 2. In conclusion, the optimum nitrogen application rates in rice and wheat seasons were 300 kg/hm2 and 255 kg/hm2,respectively,and the optimum base-topdressing ratios of nitrogen fertilizer were 7: 3 and 8: 2.关键词
秸秆还田/稻麦轮作/减量施氮/碳氮调控/产量Key words
Straw returning to field/ Rice-wheat rotation/ Reducing nitrogen application/ Carbon/nitrogen regulation/ Yield分类
农业科技引用本文复制引用
白娜玲1,吕卫光1,郑宪清1,李双喜1,张娟琴1,陆利民2,杨业凤2,张翰林1*..秸秆全量还田条件下减量施氮与碳氮调控对稻麦轮作系统的影响[J].上海农业学报,2019,35(3):63-70,8.基金项目
国家自然科学基金项目(41501259) （41501259）
国家重点研发计划(2016YFD0200804) （2016YFD0200804）
上海市农业科学院卓越团队建设计划[2017(A-03)] （A-03）
上海市农委科技兴农推广项目[沪农科推字(2017)第1-2号] （2017）
