摘要
在西北绿洲生态条件下，研究了不同灌水处理对马铃著产量及生态生理指标的影响。结果表明：处理间单位面积块茎产量、单株结薯数、株高、水分利用效率、叶面积指数、干物质积累量、光合速率、蒸腾速率均存在着显著或极显著的差异。块茎产量和水分利用效率均以灌水定额为1650m3／hm2（处理5）最高。在马铃薯水分临界期，不同灌水处理的马铃薯单叶光合速率和蒸腾速率的日变化曲线均呈双峰曲线，峰值分别出现在10：00～12：00和14：00～16：00。产量最高的处理5在12：00前基本具有最高的光合速率，而蒸腾速率在各时间段都没有体现出明显的优势。
Effects of different irrigation norms on yield and eco-physiological indices of potato were studied on oasis in northwest China. Results showed that there were significant or highly significant differences in tuber yield, tuber shoots per plant, stem high, water use efficiency （WUE）, leaf area index （LAI）, dry matter accumulation, photosynthetic rate （Pn）, and transpiration rate （Tr） between treatments. Treat- ment 5 （irrigation quota is 1650 m3/hm2） had the highest tuber yield and WUE. During critical periods, the diurnal variation trends of Pn and Tr of potato had two-peaks at 10.00-12：00 and 14：00-16：00 respectively. Treatment 5 had the highest Pn beforel2：00, but the Tr had no significant correlation at any time .
出处
《灌溉排水学报》
CSCD
北大核心
2008年第5期97-99,共3页
Journal of Irrigation and Drainage
基金
甘肃省水利科研项目(2007205)
关键词
灌水
农艺指标
生态生理指标
马铃薯
irrigation
agronomic traits
eco-physiological indices
potato
