Effects of water and nitrogen conditions under surge-root irrigation on growth and yield of apple trees

作     者：YIN Yongle FEI Liangjun LI Zhe LIU Teng LI Zhongjie HAO Kun PENG Youliang YIN Yongle;FEI Liangjun;LI Zhe;LIU Teng;LI Zhongjie;HAO Kun;PENG Youliang

作者机构：Institute of Water Resources and Hydroelectric EngineeringXi′an University of TechnologyXi′anShaanxi 710048China Shaanxi Provincial Land Engineering Construction GroupLand Survey Planning and Design InstituteXi′anShaanxi 710064China Rural Revitalization Planning and Development Guidance Center of YulinYulinShaanxi 719000China 

出 版 物：《排灌机械工程学报》 (Journal of Drainage and Irrigation Machinery Engineering)

年 卷 期：2023年第41卷第2期

页      面：179-186页

核心收录：

学科分类：082802[工学-农业水土工程] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程] 0903[农学-农业资源与环境] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：National Natural Science Foundation of China(52079105 51779205) 

主　　题：mountain apple surge-root irrigation irrigation nitrogen growth yield 

摘      要：In order to explore the effects of different irrigation and nitrogen application on growth cha-racteristics and yield of apple trees under surge-root irrigation in mountainous areas of northern Shaanxi, field experiments were carried out with different apple trees. Three irrigation levels were applied: 85%-100%(H1), 70%-85%(H2) and 55%-70%(H3) of the field water capacity, respectively, and three nitrogen levels were N1(360 g/plant), N2(240 g/plant) and N3(120 g/plant). The results show that irrigation and nitrogen application has significant effects on new shoot length, flowering and fruit setting, fruit diameter, fruit volume and yield of apple. The leaf area index(LAI) shows a single trend during the growth period, and the peak value appears in the middle of July. Under the same irrigation level, compared with N3, N1 increases in yield, new shoot length, LAI, transverse diameter, longitudinal diameter, volume, flowering and fruit setting by 17.91%, 28.31%, 18.75%, 11.38%, 10.13%, 36.60%, 20.92% and 5.19%, respectively, while N2 also increases by 12.40%, 15.63%, 4.86%, 5.40%, 5.11%, 17.01%, 26.17% and 13.74%, respectively. The rate of flowering and fruit setting decreases with the increase of nitrogen application. Under the same nitrogen level, compared with H3, H1 increases in yield, new shoot length, LAI, transverse diameter, longitudinal diameter, volume, flowering and fruit setting by 34.65%, 15.49%, 30.77%, 3.93%, 4.95%, 12.86%, 33.15% and 28.62%, respectively, while H2 also increases by 33.67%, 16.42%, 67.52%, 3.81%, 2.97%, 11.57%, 43.45% and 27.26%, respectively. The rate of flowering and fruit setting decreases first and then increases with the increase of irrigation amount. Compared with H3N3, the yield of other treatments increases by 2.69%-52.20%, while H2N1 treatment has the highest yield(26 852.55 kg/ha). Considering from the point of view of promoting growth and increasing yield, the best water and nitrogen combination mode of mountain apple in northe