| 摘要: |
| 【目的】研究滴灌水温对骏枣林土壤和树体养分吸收的影响，为新疆南疆地区红枣栽培提供技术支持。【方法】在新疆南疆地区，以5年生骏枣为研究对象，以自然水温为对照（CK），探讨不同滴灌水温（10，20，30，40 ℃）对骏枣林下0～10，10～20和20～40 cm土层土壤速效N、速效P和速效K及枣树各器官（果实、枣吊、二次枝和叶片）全N、全P、全K含量的影响。【结果】（1）20 ℃水温处理可以提高0～10，10~20 cm土层的速效P含量，较CK处理增加32.29%，16.92%；与CK处理相比，10 ℃水温处理可以提高20～40 cm土层的速效N含量和0～20 cm土层的速效K含量，30 ℃水温处理可以提高0～10 cm 土层的速效N含量和20～40 cm土层的速效P含量，40 ℃水温处理可以提高10～20 cm土层的速效N含量，但差异均未达到显著水平。（2）CK处理可以提高骏枣叶片的全N、P、K含量和二次枝的全N、全K含量。与CK处理相比，20 ℃水温处理可以提高骏枣果实中的全N、P、K含量及枣吊全N含量和二次枝的全P含量，其中果实中全K含量较CK显著增加了1.13 g/kg，其他差异均未达到显著水平。40 ℃水温处理可以提高枣吊的全P、全K含量，但差异均未达到显著水平。【结论】增温水可以提高土壤和树体的养分含量。 |
| 关键词: 骏枣 滴灌 灌溉水温 树体养分 土壤养分 |
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| 基金项目:兵团重点领域科技攻关计划项目（2021AB022）；中国海洋大学和塔里木大学联合基金项目（ZHYLH201903) |
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| Effects of drip irrigation water temperature on nutrient contents in soil and Jun-jujube trees |
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DENG Lan,ZHOU Zhengli,ZHAO Hang,et al
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| Abstract: |
| 【Objective】The effects of drip irrigation water temperature on nutrient absorption in soil and trees were investigated to provide support for Jun-jujube cultivation in southern Xinjiang.【Method】The 5-year-old Jun-jujube trees in southern Xinjiang were selected to investigate the effects of drip irrigation water temperatures (10,20,30 and 40 ℃) on contents of N,P and K in different depths of soil and organs of Jun-jujube trees (fruits,bearing branches,secondary branches and leaves) using natural water temperature as control (CK).【Result】(1) The 20 ℃ treatment significantly increased available P content in the 0-10,10-20 cm soil layer by 32.29%,16.92% compared with CK.The 10 ℃ treatment increased alkaline hydrolyzable nitrogen in 20-40 cm soil layer and available potassium in 0-20 cm soil layer.The 30 ℃ treatment increased alkaline hydrolyzable nitrogen in the 0-10 cm soil layer and available phosphorus in the soil layer of 20-40 cm.The 40 ℃ treatment increased alkaline hydrolyzable nitrogen in the soil layer of 10-20 cm.The differences in the treatments of 10,30 and 40 ℃ were insignificant.(2) CK increased N,P and K contents in leaves and N and K contents in secondary branches.The 20 ℃ treatment increased N,P and K contents in Jun jujube fruits,N content in bearing branches and P content in secondary branches.Among them,total K content in fruits was significantly increased by 1.13 g/kg,while other differences were insignificant.The 40 ℃ treatment increased P and K contents in bearing branches.【Conclusion】Increasing water temperature promoted nutrient contents in soil and trees in southern Xinjiang. |
| Key words: Jun-jujube drip irrigation irrigation water temperature tree nutrient soil nutrient |
