植物体氮素的挥发损失——Ⅳ.玉米生长过程中挥发损失的氮素

被引:6
作者
田霄鸿
李生秀
机构
[1] 西北农业大学农化系
[2] 西北农业大学农化系 陕西杨陵·712100
关键词
玉米; 氨挥发; 生长介质表面处理; 纳氏比色法;
D O I
暂无
中图分类号
学科分类号
摘要
把玉米植株和用经磷酸甘油液浸泡的塑料泡沫覆盖的生长介质(土壤)同置于密闭的生长室中,捕获测定了玉米整个生育过程中挥发的氨气。结果表明,玉米能挥发出少量的氨,中后期62d挥发量约为200g/ha;后期挥发量较前期大,约6g/d·ha(N)。温度、叶子衰老程度、施氮水平对氨气挥发量未表现出明显影响。玉米挥发的氨量不稳定,变异较大。
引用
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页码:18 / 24
页数:7
相关论文
共 7 条
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