9000kg/公顷小麦施氮量与生理特性分析

被引:56
作者
于振文
潘庆民
姜东
张永丽
王东
机构
[1] 山东农业大学农业部小麦栽培生理与遗传改良重点开放实验室
关键词
冬小麦; 9000kg/hm2; 施氮量; 生理特性;
D O I
暂无
中图分类号
S512.106 [];
学科分类号
摘要
在本试验生产条件下和施氮量范围内 ,具有 90 0 0 kg/ hm2产量潜力的品种鲁麦 2 2与 75 0 0 kg/ hm2产量潜力的鲁麦 14相比较 ,鲁麦 2 2品种随着施氮量的增加 ,开花后旗叶光合速率高值持续期长 ,旗叶磷酸蔗糖合成酶 (SPS)活性和籽粒腺苷二磷酸葡萄糖焦磷酸化酶 (ADPG- PPase)活性高 ,标记旗叶的 1 4C同化物滞留在标记叶中的比例少、向籽粒分配的比例大 ,籽粒产量高。利用 1 5N同位素的研究结果表明 ,鲁麦 2 2品种的较高施氮量处理对肥料氮的利用率高。研究认为 ,2 10~ 2 70 kg N/ hm2为黄淮冬麦区小麦由高产 (75 0 0 kg/ hm2 )向超高产 (90 0 0 kg/ hm2 )过渡并可获得 90 0 0kg/ hm2产量的高产高效施氮量。
引用
收藏
页码:37 / 43
页数:7
相关论文
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