不同生育时期灌水对大豆根系性状及产量的影响  

Effect of Irrigation at Different Growth Stages on Root Characters and Yield of Soybean

作　　者：李丽君[1,2] 于晓芳[1] 李强[1] 樊丽[1] 张卫中[3] 高聚林[1] 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010010 [2]内蒙古自治区种子管理站,内蒙古呼和浩特010010 [3]内蒙古农业大学经济管理学院,内蒙古呼和浩特010010

出　　处：《大豆科学》2013年第1期133-135,共3页Soybean Science

基　　金：教育部新世纪优秀人才支持计划(NCET040264);内蒙古自然科学基金(200408020302)

摘　　要：以吉育47大豆为材料,研究不同生育时期灌水处理对内蒙古干旱半干旱地区大豆根系性状动态变化及产量的影响。结果表明,大豆分枝期或开花期灌水,可增加根系鲜重、增强根系活力、增大根系活跃吸收面积;全生育期灌水可增加根系鲜重,增大根系吸收面积,降低根系活力,而全生育期不灌水处理恰好相反。在仅灌一次水的情况下,以大豆分枝期灌水处理产量最高,达2 305.5 kg·hm-2。The effect of irrigation at different growth stages on root dynamic changes and yield of soybean in arid and semi-arid regions in Inner Mongolia was investigated with soybean cuhivar Jiyu 47 as material. The results showed that irrigation at branching or flowering could significantly increase root fresh weight, enhance root activity, and enlarge root active absorption ar- ea. Irrigation during whole growth period increased root fresh weight and absorption area, decreased root activity;while no irri- gation treatment had opposite results. On the condition of irrigated one time during whole growth stage, the highest yield of 2 305.5 kg· ha-1 was achieved when irrigated at branching stage.

关 键 词：大豆 根系性状 灌水处理 产量 

分 类 号：S565.1[农业科学—作物学]