摘要
以籼型两系杂交稻C两优华占为材料进行大田试验,前茬为小麦,秸秆全量还田,设置旱直播、水直播、间歇灌溉和淹水灌溉处理,测定水稻产量、叶片SPAD值、甲烷和氧化亚氮气体排放等指标,探究水分管理对麦茬水稻直播产量形成和温室气体排放的规律。结果表明,水直播处理产量显著高于旱直播处理产量,且间歇灌溉处理产量、叶片SPAD值、株高、根系活力等均高于淹水灌溉处理;间歇灌溉处理对氧化亚氮排放影响较大,淹水灌溉处理对甲烷排放影响较大。旱直播间歇灌溉可显著提高水分生产效率。
A japonica rice cultivar of C-liangyouhuazhan was directly sown in the field. The former crop was wheat and the straw all was returned field. The treatments of dry-direct-seeding, water-direct-seeding, intermittent irrigation, flood irrigation were conducted. The indexes of rice yield, leaf SPAD value, CH4 and N2O were measured. The law of water management on the formation of direct seeding yield and greenhouse gas emission in direct-seeding rice following wheat was studied. The results showed that the yield of water-direct-seeding was higher than dry-direct-seeding and the yield, SPAD value, plant high, root activity of intermittent irrigation were higher than flood irrigation. Intermittent irrigation treatment has great influence on N2O emission, while flooded irrigation treatment has great influence on CH4 emission. The water use efficiency(WUE)can be improved through dry-direct-seeding and intermittent irrigation.
作者
李阳
汪本福
张枝盛
肖飞
王泠菲
马捷
程建平
LI Yang;WANG Ben-fu;ZAHGN Zhi-sheng;XIAO Fei;WANG Ling-fei;MA Jie;CHENG Jian-ping(Food Crops Institute,Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement,Wuhan 430064,China;Hubei Collaborative Innovation Center for Grain Industy,Jingzhou 434025,Hubei,China;Agricultural College,Yangtze University,Jingzhou 434025,Hubei,China;Hubei Engineering University,Xiaogan 432000,Hubei,China)
出处
《湖北农业科学》
2019年第24期27-30,共4页
Hubei Agricultural Sciences
基金
国家重点研发计划项目（2018YFD0301301
2016YFD0300908
2017YFD0301400）
国家水稻产业技术体系项目（CARS-01-04A）
湖北省农业科学院青年基金项目（2016NKYJJ04）
关键词
直播
麦茬稻
产量
温室气体
direct seeding
rice following wheat
yield
greenhouse gas
