井大炜,邢尚军,刘方春,马海林,杜振宇,马丙尧.保水剂施用方式对侧柏根际微生态环境的影响[J].农业机械学报,2016,47(5):146-154.
Jing Dawei,Xing Shangjun,Liu Fangchun,Ma Hailin,Du Zhenyu,Ma Bingyao.Effect of Application Methods of Super Absorbent Polymers on Micro-ecological Environment in Rhizosphere Soil of Platycladus orientalis[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(5):146-154.
摘要点击次数: 1164
全文下载次数: 674
保水剂施用方式对侧柏根际微生态环境的影响   [下载全文]
Effect of Application Methods of Super Absorbent Polymers on Micro-ecological Environment in Rhizosphere Soil of Platycladus orientalis   [Download Pdf][in English]
投稿时间:2015-12-23  
DOI:10.6041/j.issn.1000-1298.2016.05.020
中文关键词:  保水剂  凝胶  侧柏  根际  土壤酶活性  微生物多样性
基金项目:国家自然科学基金项目(31500513)、山东省科技发展计划项目(2010GSF10621)和德州学院科技人才引进项目(311890)
作者单位
井大炜 德州学院 
邢尚军 山东省林业科学研究院 
刘方春 山东省林业科学研究院 
马海林 山东省林业科学研究院 
杜振宇 山东省林业科学研究院 
马丙尧 山东省林业科学研究院 
中文摘要:为探讨保水剂施用方式对侧柏根际微生态环境的作用效果,以侧柏裸根苗为试材,通过盆栽试验研究了不施肥和保水剂(CK)、单施尿素(U)、单施保水剂(S)、保水剂-尿素混施(SUM)和保水剂-尿素凝胶(SUG)等处理对侧柏根际土壤酶活性、微生物多样性及生长的影响。结果表明:同U处理相比,SUG处理明显增加了根系分泌物中氨基酸总量、有机酸总量和总糖含量;SUG处理显著提高了根际土壤过氧化氢酶、脲酶、多酚氧化酶和蔗糖酶活性,其中脲酶活性分别较CK、U、S、SUM处理提高29.53%、14.88%、27.81%、7.82%;同时SUG处理亦提高根际土壤微生物平均吸光度(AWCD)、丰富度指数和均匀度指数,并降低了优势度指数,其中丰富度指数分别比CK、U、S、SUM处理提高28.78%、30.22%、26.91%、8.39%。此外,SUG处理还显著促进了侧柏地径和株高的生长,并明显高于其他处理。与SUG处理相比,S、SUM处理对侧柏根际土壤酶活性和微生物多样性的影响作用较小,说明保水剂-尿素凝胶方式较单施保水剂和保水剂-尿素混施方式可显著增强侧柏的干旱适应能力。由此可知,保水剂-尿素凝胶方式有利于改善侧柏根际土壤微生态环境,增强抵御干旱胁迫的能力,并促进生长。
Jing Dawei  Xing Shangjun  Liu Fangchun  Ma Hailin  Du Zhenyu  Ma Bingyao
Dezhou University,Shandong Academy of Forestry,Shandong Academy of Forestry,Shandong Academy of Forestry,Shandong Academy of Forestry and Shandong Academy of Forestry
Key Words:super absorbent polymers  gel  Platycladus orientalis  rhizosphere  soil enzyme activity  microbial diversity
Abstract:Super absorbent polymers (SAP) can absorb water up to a few hundred or even a few thousand times of their own mass. Their special physical structures, unique chemical compositions, and characteristics of high water absorption capacity allow super absorbent polymers to be widely used in agriculture, forestry and other industries to relieve drought and reserve water for farmland, afforestation and crop yield improvement. However, the ways of super absorbent polymers applied is an important factor to evaluate.In order to explore the effect of SAP application ways on micro ecological environment in rhizophere soil of Platycladus orientalis, a pot experiment including five treatments, i.e. CK (neither fertilizer nor SAP was applied), U (urea was applied alone), S (SAP was applied alone), SUM (SAP was mixed with urea) and SUG (gel was made of SAP and urea) was performed. The experiment was to evaluate the effect of different ways of SAP application on enzyme activity and microbial functional diversity in rhizosphere soil as well as growth of Platycladus orientalis. Results indicated that in comparison to U treatment, the SUG treatment significantly increased total amino acids, total organic acids and total sugar in the root exudates. The activity of catalase enzyme, urease enzyme, polyphonic oxidase enzyme and invertase enzyme was also improved by SUG treatment, showing the urease enzyme activity was increased by 29.53%, 14.88%, 27.81% and 7.82% compared to the treatments of CK, U, S and SUM, respectively. At the same time, the values of AWCD and indexes of Shannon and McIntosh were significantly higher in the SUG treatment than in the other treatments, while the Simpson index was decreased by the SUG treatment, indicative of 28.78%, 30.22%, 26.91% and 8.39% increases in Shannon index over the treatments of CK, U, S and SUM. Additionally, the SUG treatment obviously promoted the growth of ground diameter and plant height, and had significant differences with other treatments. However, in S and SUM treatments, less effect on soil enzyme activity and microbial diversity was observed than in SUG treatment, which indicated that the gel way could significantly improve the drought adaptability of Platycladus orientalis compared with the ways of SAP application alone and mixture of SAP and urea. As a result, the gel was beneficial to improve the micro ecological environment of rhizosphere soil, enhance the ability of drought resistance and promote growth of Platycladus orientalis.

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