分根灌溉对草莓光合特性及水分利用效率的影响

Effects of Partial Root Zone Irrigation on Photosynthesis Characteristics and Water Use Efficiency of Strawberry

针对目前我国水资源短缺、农业灌溉用水过度浪费等问题,以草莓品种赛娃为试材,探讨了分根灌溉对其光合特性及水分利用率的影响。结果表明:全灌溉处理用水量大,草莓生长优势不明显;半根灌溉和3/4根际灌溉的草莓净光合速率、蒸腾速率、水分利用效率均接近正常。综合分析,半根灌溉既能大量节水,又不影响草莓的正常生长,是一种较为理想的节水灌溉方式。

Current agriculture production in China is confronting with not only shortage of water resources but also serious water waste in farm irrigation. With the strawberry variety Saiwa as material, the effects of partial root zone irrigation （PRI） on the photosynthesis characteristics and water use efficiency （WUE） were studied. The results indicated that full irrigation wasted large amount of water and didn＇ t obviously promote the strawberry growth ; half or 3/4 root zone irrigation kept the net photosynthesis rates （ Pn）, the transpiration rates （Tr） and the WUE of strawberry to be normal. In conclusion, haft root zone irrigation is an ideal water - saving irrigation technique in strawberry cultivation.