孙三民,安巧霞,杨培岭,陆小波,顾凯凯.间接地下滴灌灌溉深度对枣树根系和水分的影响[J].农业机械学报,2016,47(8):81-90.
Sun Sanmin,An Qiaoxia,Yang Peiling,Lu Xiaobo,Gu Kaikai.Effect of Irrigation Depth on Root Distribution and Water Use Efficiency of Jujube under Indirect Subsurface Drip Irrigation[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(8):81-90.
摘要点击次数: 1055
全文下载次数: 840
间接地下滴灌灌溉深度对枣树根系和水分的影响   [下载全文]
Effect of Irrigation Depth on Root Distribution and Water Use Efficiency of Jujube under Indirect Subsurface Drip Irrigation   [Download Pdf][in English]
投稿时间:2016-03-22  
DOI:10.6041/j.issn.1000-1298.2016.08.012
中文关键词:  枣树  间接地下滴灌  灌溉深度  根系  水分利用率
基金项目:国家自然科学基金项目(51069013、51369028)和国家级大学生创新创业训练计划项目(201410757004)
作者单位
孙三民 中国农业大学
塔里木大学 
安巧霞 塔里木大学 
杨培岭 中国农业大学 
陆小波 塔里木大学 
顾凯凯 塔里木大学 
中文摘要:为探讨间接地下滴灌及导水装置埋深(灌溉深度)对南疆极端干旱区矮化密植红枣根系生长分布特征及产量、水分利用率的影响,试验设间接地下滴灌(ISDI)3个导水装置埋深水平,分别为20、27、35cm,以地表滴灌(DI)为对照,共4个处理,经过2~4a的田间试验后,采用环状壕沟分层挖掘法对以枣树树干为中心,半径为1m的90°扇形区域内0~100cm土层进行根系取样。结果表明,相对于DI,ISDI下各根系分布较均匀,生长方向基本向下延伸;ISDI显著增加了根径小于5mm根系根长密度,细根(根径小于2mm)是DI的3倍,但减少了根径大于5mm根系根长密度,相对增加了20~40cm土层根系根长占总根长的比率;垂直方向上随着灌溉深度的增加表层根系根长密度相对减少,深层相对增加;水平方向上各处理根系根长密度基本呈现随着与树干水平距离的增加而减小的趋势,但在0~20cm土层减小的幅度较大,在20~40cm土层其减小的幅度较小;随着灌溉技术由DI到ISDI及灌溉深度的增加,细根分布基本呈现出由“宽浅型”向“深根型”发展的趋势。相对DI,ISDI具有较好的节水增产效果,提高产量及灌溉水生产率最大达20%。建议幼龄期南疆密植枣树的导水装置埋深为27~35cm。研究为极端干旱区枣树适宜灌溉技术的选择及其技术要素的制定提供依据。
Sun Sanmin  An Qiaoxia  Yang Peiling  Lu Xiaobo  Gu Kaikai
China Agricultural University;Tarim University,Tarim University,China Agricultural University,Tarim University and Tarim University
Key Words:jujube tree  indirect subsurface drip irrigation  irrigation depth  root  water use efficiency
Abstract:To investigate the effects of installation depths of water-conduct device on root distribution and root growth in dwarf close planting jujube under indirect subsurface drip irrigation (ISDI), three installation depths of water-conduct device were considered in the experiment. The installation depths of water-conduct device were 20cm (T1), 27cm (T2) and 35cm (T3), respectively, with surface drip irrigation (DI) as comparison. Different depths, horizontal distances of jujube roots system distribution were obtained by annular ditch layered methods, the results showed that there were significant differences in jujube roots system distribution under DI and ISDI. On root morphology, root distributions were shallow and horizontal extension under DI. The distribution of root in different soil layers was uniform, and growth direction of root was basically downward under ISDI. ISDI significantly increased the root length density of fine roots (d<5mm), which increased by 1~2 times than that of DI. Root length density of d>5mm and root system distribution distance in horizontal direction were reduced, and the proportion of fine root length in 20~40cm soil layer was increased. With the increase of depth of water-conduct device, the root length density of fine roots (d<2mm) was decreased in 0~20cm soil layer and increased gradually in 20~60cm in vertical direction under ISDI. In horizontal direction, the fine root length density of each treatment was comparatively concentrated distribution in 0~20cm soil layer,70% of root was distributed in horizontal range of 0 ~ 20cm, the fine root distribution distance of each treatment was increased. With the increase of depth of water-conduct device, the horizontal distribution distances of roots of different diameter in 0~20cm soil layer tended to be reduced, but that in 20~40cm soil layer tended to be increased. Generally, with the increase of depth of water-conduct device, fine root distribution showed developing trend from shallow and wide to narrow and deep.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器