北京水务Issue(2)：43-49,7.DOI:10.19671/j.1673-4637.2024.02.008
不同追肥比例对土壤氮素迁移和夏玉米生长的影响
Effects of different topdressing ratio on the soil nitrogen migration and the summer maize growth
摘要
Abstract
In order to explore the scientific model of maize nitrogen application in Jiangsu area,the ef-fects of different nitrogen application ratios on soil nitrogen migration and summer maize growth were studied.The total amount of nitrogen applied for each treatment was 250 kg/hm2,and the base fertilizer was 50 kg/hm2.Topdressing was performed at jointing stage and filling stage,and the ratio of topdressing treatments were set at 3∶7(T1 treatment),7∶3(T2 treatment),and 1∶1(CK treatment).The results revealed that the T2 treatment could significantly reduce the nitrate nitrogen content in 20～60 cm soil layer during summer corn harvest compared with CK and T1 treatment in dry years.The ear length of corn treated with T2 was 9.3％higher than that t CK(p＜0.05).However,there were no significant differences in plant height,leaf area index,dry weight above ground,ear size,100 grain weight,grain yield,and nitrogen use efficiency for summer maize under different topdressing treatments.Considering the yield,quality,nitro-gen utilization efficiency,and soil nitrate nitrogen accumulation of summer maize,the T2 treatment was recommended as the optimal topdressing ratio in Jiangsu province.关键词
土壤氮素/不同追肥比/玉米产量Key words
soil nitrogen/different topdressing ratio/Maize yield分类
农业科技引用本文复制引用
欧阳颖琦,陈雨,吴恺,路彬,马文恒,李艳..不同追肥比例对土壤氮素迁移和夏玉米生长的影响[J].北京水务,2024,(2):43-49,7.基金项目
江苏省自然科学基金-青年基金(BK20200941):"盐渍土秸秆深埋的水盐运移机理与模拟研究" （BK20200941）
宁波市公益性科技计划项目(2022S097):"节水减肥提质的番茄水肥一体化关键技术及集成模式示范应用". （2022S097）
