【作者】 刘宝存； 吴静； 孙明德；

【Author】 Liu Baocun Wu Jing Sun Mingde(Institute of Plant Nutrition and Resources, Beijing Academy of Agricultural Sciences, Beijing 100089)

【机构】 北京市农林科学院植物营养与资源研究所；

【摘要】 本文研究了北京郊区夏玉米硫的吸收、累积及分配规律,结果表明,夏玉米的整株硫含量在拔节期最高,累计吸硫量呈单一峰线。夏玉米植株在不同生育期硫的吸收量和吸收速率各不相同,其中拔节至大喇叭口期和吐丝后30～45天是夏玉米硫素吸收量和吸收速率的两个高峰期。夏玉米各器官中叶片和雄穗的硫含量较高,而茎秆和雌穗的较低。同一器官在不同生育期,体内的硫含量和累积量也有所不同,一般叶片的硫含量保持最高,雌穗的硫素累积量不断增加。更多还原

【Abstract】 The uptake, accumulation, and distribution of sulphur in summer maize was studied in Beijing suburban fields.The total content of S in maize plant was highest at booting stage. Accumulative uptake quantity formed a single peak curve.The amount of sulphur absorbed and rate of uptake by maize were various at different developmental stages.The highest amount and uptake rate appeared at the periods from Jointing to booting stage and from 30 to 40 days after flowering. Leaves and male spike had higher sulphur content than stalk and ear. Sulphur content in leaves remained at high level while S in ear increased steadily during plant development.更多还原