ZHENG Qiang-qing,CHEN Qi-ling,LI Ming,et al.Study on Root Distribution Characteristics and Changes of Rhizosphere Soil Moisture Under Drip Irrigation of Junzao[J].Northern Horticulture,2013,37(22):177-180.
滴灌条件下骏枣根系分布特征及根际土壤水分变化研究
- Title:
- Study on Root Distribution Characteristics and Changes of Rhizosphere Soil Moisture Under Drip Irrigation of Junzao
- 文章编号:
- 1001-0009(2013)22-0177-04
- Keywords:
- drip irrigation; Junzao; root system; soil moisture
- 分类号:
- S 665.1
- 文献标志码:
- A
- 摘要:
- 以7 a生骏枣园为研究对象，分析了滴灌条件下骏枣根系分布特征和相同滴头流量不同滴灌时间沙地土壤水分动态的变化特征，以期为研究骏枣对水分的需求特性和提高沙地水分的利用率提供参考。结果表明：滴灌条件下骏枣的根系分布较浅，粗根的比例较大，细根较少，根系主要集中在20～40 cm处，占总根系的55.51%；沙地骏枣成龄枣园的滴灌时间控制在24 h左右，土壤中水分的富集区集中在50～60 cm深处，含水量相对稳定且保持的时间较长，无渗漏，不影响更深层次土壤水分的上移，有利于骏枣根系的垂直生长及根系对水分的高效合理利用。
- Abstract:
- Taking 7 years Junzao orchard as research object,the water requirement characteristics to improve the sand moisture utilization rate of Junzao under drip irrigation were studied,and the root distribution characteristics and the dynamic change characteristics of soil water with sameness emitter and different drip irrigation time were analyzed.The results indicated that they were the shallower of root system distribution,the proportion of thick roots were larger than fine root,all of them were mainly in the 20~40 cm and accounted 55.51% of total root system.When the drip irrigation time was controlled at about 24 h in Junzao grownup orchard,it was focused on 50~60 cm with soil water enrichment zone,volumetric water content was relatively stable and kept for a long time.More important was no leakage and the deeper soil water does not move up.It benefited vertical growth of root system and rational and high effective utilization of agricultural water resources.
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备注/Memo
第一作者简介：郑强卿（1980-），男,硕士，助理研究员，现主要从事果树栽培与果树生理等研究工作。E-mail:zhengqq369@163.com.
责任作者：陈奇凌（1970-）,男,本科，副研究员，现主要从事林木栽培与生理生态等研究工作。E-mail:Cql619@163.com.
基金项目：国家科技支撑计划资助项目（2011BAD48B03）。
收稿日期：2013-07-31