Effect of Fruit Tree Hole Water Storage Bricks on Photosynthetic Characteristics and Nitrogen Uptake in Greenhouse Soft-seeded Pomegranates in Southern Xinjiang
Effect of Fruit Tree Hole Water Storage Bricks on Photosynthetic Characteristics and Nitrogen Uptake in Greenhouse Soft-seeded Pomegranates in Southern Xinjiang
This study aims to identify measures for enhancing fertilizer nitrogen efficiency suitable for sandy soils in southern Xinjiang greenhouses,using'Tunisia'soft-seeded pomegranates with a three years growth period as material.Three treatments were set up;no fruit tree hole water storage brick(CK),application of fruit tree hole water storage brick A(T1),and application of fruit tree hole wa-ter storage brick B(T2).The objective is to investigate the effects of applying fruit tree hole water storage bricks on the photosynthetic characteristics and nitrogen uptake in soft-seeded pomegranates.The results indicated that both T1 and T2 treatments significantly increased the chlorophyll index on the first day of the irrigation cycle,as well as the nitrogen balance index on the third and fifth days.They also enhanced the daily average values of leaf net photosynthesis rate,stomatal conductance,in-tercellular carbon dioxide concentration,and transpiration rate,with T1 showing better overall per-formance compared to CK,T1 and T2 treatments significantly increased the total nitrogen and nitrate nitrogen content in pomegranate stems,leaves,and roots.Furthermore,there was a notable increase in ammonium nitrogen content in stems and leaves.Therefore,the overall performance ranking of the three interventions was T1＞T2＞CK.In conclusion,the application of fruit tree hole water storage bricks contributes to improved photosynthetic performance and nitrogen uptake of soft-seeded pome-granates in the sandy soil conditions of southern Xinjiang greenhouses.Among the treatments,the application of fruit tree hole water storage brick A yields the best results.
关键词
果树穴贮砖/软籽石榴/氮平衡指数/光合特性/氮素吸收
Key words
Fruit tree hole water storage brick/Soft-seeded pomegranate/Nitrogen balance index/Photosynthetic characteristics/Nitrogen uptake
维普
万方数据