摘要
通过田间试验对比研究了不同肥料与种子混播对冬小麦产量及氮肥利用率的影响,结果表明:使用缓控释肥T5处理进行种肥混播,冬小麦茎秆和籽粒的氮含量和氮累积量明显提高,比优化施肥T2处理提高10.47个百分点;且能提高有效穗数和成穗率,产量比T2处理提高7.1%。控释肥T4和T5处理土壤硝态氮主要分布在0~60cm土层,与T2处理相比,降低了80~100cm土层硝态氮淋溶风险。
The effects of different fertilizers in condition of seed and fertilizer mixed sowing on winter wheat yield and nitrogen use efficiency were studied through field experiment.The results showed that T5 treatment increased the nitrogen content accumulation in winter wheat stems and grains by 10.47 percentage points compared with T2 treatment.It also increased the number of effective panicles and the rate of ear formation,so the wheat yield increased by 7.1%compared with T2 treatment.The nitrate nitrogen mainly distributed in 0~60-cm soil layer under T4 and T5 treatments,so the risk of nitrate leaching in 80~100-cm soil layer decreased compared with T2 treatment.
作者
李子双
李洪杰
周晓琳
赵同凯
王玉霞
王富建
王薇
张英鹏
谭德水
Li Zishuang;Li Hongjie;Zhou Xiaolin;Zhao Tongkai;Wang Yuxia;Wang Fujian;Wang Wei;Zhang Yingpeng;Tan Deshui(Dezhou Academy of Agricultural Sciences,Dezhou 253015,China;Institute of Agricultural Resources and Environment,Shandong Academy of Agricultural Sciences,Jinan 250100,China)
出处
《山东农业科学》
2020年第11期56-59,共4页
Shandong Agricultural Sciences
基金
国家重点研发计划项目“黄淮海冬小麦化肥农药减施技术集成研究与示范”(2017YFD0201700)
山东省重点研发计划项目“鲁西北小麦玉米轮作区化肥减施技术应用与示范”(2019GNC21328)
山东省农业重大应用技术创新项目“山东省冬小麦种肥混播技术模式集成创新与示范”
德州市市级研发计划项目“德州小麦玉米农药化肥减施增效技术研究与应用”
国家自然科学基金项目“麦玉两熟体系作物秸秆钾转化特征与钾素补偿机制”(41877100)
山东省重大科技创新工程项目“小麦-玉米周年水肥精准调控关键技术研发与集成示范”(2019JZZY010716)
农业农村部黄淮海平原农业环境重点实验室开放课题“氮肥运筹对冬小麦氨挥发损失的影响”。
关键词
种肥混播
缓控释肥
小麦产量
氮肥利用率
硝态氮
Seed and fertilizer mixed sowing
Slow and controlled release fertilizer
Wheat yield
Nitrogen use efficiency
Nitrate nitrogen
