摘要
采用根箱试验研究了间歇灌溉与淹灌两种灌溉方式对汕优10号根系生长的影响。结果表明,间歇灌溉处理具有更高的根系活力,较高的根系生物量和较深的根层分布,抽穗以后土表10 cm以下根系生物量比例高于淹灌处理。这可能是间歇灌溉条件下,稻株氮素吸收及利用率增强,后期干物质积累及产量提高的重要生理原因。
Rice root growth under intermittent and flooded irrigation conditions was studied based on a root box experiment. The result showed that rice in intermittent irrigation had higher root activity, more too biomass, deeper root distribution and more root biomass in the lower 10 cm soil layer after heading stage than in flooded irrigation. This might be one of the important physiological causes leading to high N absorption, dry matter accumulation and yield in intermittent irrigation treatment.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第1期102-104,共3页
Agricultural Research in the Arid Areas
关键词
水稻
间歇灌溉
根系分布
根系活力
rice
intermittent irrigation
root attribution
root activity
