摘要
以玉米陇单6号为研究对象,通过田间试验,采用灌水和施氮2因素交互设计,按照农田实际蒸散量(ETc)设置3个灌溉水平,分别为80%ETc、100%ETc、120%ETc(W1、W2、W3),每个灌水量下设置4个施氮量水平,分别为不施氮、施氮230、340、450 kg/hm^(2)(N0、N1、N2、N3),共12个处理。在玉米各生育期测定光合生理指标,收获后测产和子粒品质并计算水氮利用效率。结果表明,同一施氮水平或灌溉水平下玉米净光合速率、蒸腾速率、气孔导度均随施氮量或灌水量增加而提高。适宜的水氮配比可显著改善玉米品质,提高玉米产量和水氮利用效率。利用主成分分析法进行评价,表明N3W3处理综合效应最佳,玉米最佳灌溉定额为428.60~493.33 mm、施氮量为450 kg/hm^(2)。
Using maize Longdan 6 as the research subject,field experiments were conducted employing a twofactor interaction design of irrigation and nitrogen application.According to the actual evapotranspiration(ETc)of the farmland,three irrigation levels were set up:80%ETc,100%ETc,120%ETc(W1,W2,W3),and four levels of nitrogen application were set up for each irrigation level:0,230,340,450 kg/ha(N0,N1,N2,N3).The photosynthet⁃ic physiological indices were measured at each maize growth stage,the yield and grain quality were measured after harvest,and water and nitrogen use efficiency were calculated.The results showed that under the same nitrogen ap⁃plication level or irrigation level,the net photosynthetic rate,transpiration rate,and stomatal conductance of maize increased with the increase of nitrogen application amount or irrigation amount.The suitable water and nitrogen ra⁃tio can improve the maize quality,increase yield and water-nitrogen use efficiency of maize,the principal compo⁃nent analysis method was used for evaluation,which indicated that the N3W3 treatment had the best comprehensive effect,that is the optimal irrigation quota of maize was 428.60-493.33 mm and the nitrogen application amount was 450 kg/ha.
作者
邓浩亮
潘小番
兰雪梅
王勤礼
肖让
滕安国
雷联
DENG Hao-liang;PAN Xiao-fan;LAN Xue-mei;WANG Qin-li;XIAO Rang;TENG An-guo;LEI Lian(College of Civil Engineering,Hexi University/Research Institute of Water Resources Protection and Utilization in Hexi Corridor,Zhangye 734000;Gansu Provincial Engineering Research Center for the Resource Utilization of Edible Fungi and Fungi Bran,Hexi University,Zhangye 734000;College of Agriculture and Ecological Engineering,Hexi University,Zhangye 734000;Administration of Hongshuihe River,Minle 734500,China)
出处
《玉米科学》
CAS
CSCD
北大核心
2024年第7期73-82,共10页
Journal of Maize Sciences
基金
甘肃省自然科学基金项目(22JR5RG561)
甘肃省教育厅创新基金项目(2022B-168)
河西学院博士科研启动基金项目(KYQD2020012,KYQD2023018)
甘肃省科技计划项目(23CXGG0003)
河西学院校长基金创新团队项目(CXTD2023002)。
关键词
玉米
水氮互作
带状复合种植
水氮利用效率
Maize
Water-nitrogen interaction
Strip intercropping planting
Water-nitrogen use efficiency
