首页|黄腐酸钾对灵武长枣氮素吸收、分配及利用的影响

黄腐酸钾对灵武长枣氮素吸收、分配及利用的影响

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以5年生的灵武长枣(Ziziphus jujuba Mill。cv。Lingwuchangzao)树为试材，采用 15N示踪法进行田间试验，研究0 kg/株(CK)、0。5 kg/株(T1)、1。0 kg/株(T2)、1。5 kg/株(T3)不同黄腐酸钾有机肥施用量对灵武长枣氮素吸收、分配、利用的影响。结果表明，灵武长枣树体氮积累量随黄腐酸钾供应水平的提高而增加，1。5 kg/株黄腐酸钾处理在果实成熟期氮积累量最高，达59。66 g/株，各处理以叶片、果实氮积累量较高;3个黄腐酸钾处理均显著提高了植株对氮素的吸收征调能力(NdFF)和 15N吸收量(P<0。05)，表现为T3>T2>T1>CK，不同器官的NdFF表现为果实最高;不同施肥处理的植株各器官 15N分配率存在差异，以贮藏器官(果实)较高;与CK相比，3个黄腐酸钾处理 15N当季利用率增加了2。27～5。34个百分点，以T3处理最佳，为8。92%。综合分析认为，配施1。5 kg/株黄腐酸钾有机肥，灵武长枣植株 15N的吸收利用效果最佳。
Effects of fulvic acid potassium on nitrogen absorption,distribution and utilization of Ziziphus jujuba Mill.cv.Lingwuchangzao
Five-year-old Ziziphus jujuba Mill.cv.Lingwuchangzao trees were used as materials,and 15N trace technique was used to study the effects of 0 kg/plant(CK),0.5 kg/plant(T1),1.0 kg/plant(T2)and 1.5 kg/plant(T3)potassium fulvic acid organic fertiliz-er on nitrogen absorption,distribution and utilization of Z.jujuba Mill.cv.Lingwuchangzao in the field experiment.The results showed that the nitrogen accumulation of Z.jujuba Mill.cv.Lingwuchangzao increased with the increase of fulvic acid potassium supply level.The nitrogen accumulation of T3 was the highest(59.66 g/plant)at fruit maturity.The nitrogen accumulation of leaves and fruits was high in each treatment.The three fulvic acid potassium treatments significantly improved the nitrogen absorption and regulation ability(Ndff values)and 15N absorption of plants(P<0.05),and the order from high to low was T3,T2,T1,and CK.In terms of the Ndff val-ue of different organs,the value of the fruit was the highest.The 15N distribution rate of each organ of plants with different treatments was different,and the storage organ(fruit)was high.Compared to CK,the 15N utilization rates of three fulvic acid potassium treat-ments increased by 2.27 to 5.34 percentage points,and T3 was the best(8.92%).Comprehensive analysis showed that the 15N absorp-tion and utilization of Z.jujuba Mill.cv.Lingwuchangzao was the best,when combined with fulvic acid potassium organic fertilizer of 1.5 kg/plant.

fulvic acid potassiumZiziphus jujuba Mill.cv.Lingwuchangzaonitrogenabsorptiondistributionutilization

李慧、李百云

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宁夏农林科学院园艺研究所,银川 750002

黄腐酸钾 灵武长枣(Ziziphus jujuba Mill.cv.Lingwuchangzao) 氮素 吸收 分配 利用

宁夏自然科学基金项目宁夏自然科学基金项目宁夏银川市葡萄、枣国家林木种质资源库项目宁夏农林科学院对外科技合作专项

2020AAC033242022AAC03441DW-X-2020004

2024

10.14088/j.cnki.issn0439-8114.2024.01.007

湖北农业科学
湖北省农业科学院　华中农业大学　长江大学　黄冈师范学院

湖北农业科学

CSTPCD
影响因子：0.442
ISSN：0439-8114
年,卷(期)：2024.63(1)
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