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复合保水剂吸水保水性能及其应用
引用本文:张 璐,孙向阳,田 赟,龚小强.复合保水剂吸水保水性能及其应用[J].农业工程学报,2012,28(15):87-93.
作者姓名:张 璐  孙向阳  田 赟  龚小强
作者单位:北京林业大学水土保持学院,教育部水土保持与荒漠化防治重点实验室,北京100083
基金项目:北京市科技计划重大课题(D09040903780801);北京市教育委员会共建项目专项资助
摘    要:为了促进自制的复合保水剂(以下称复合保水剂)在节水型设施基质栽培中的合理应用,该文比较了复合保水剂和对照保水剂(旱宝贝MP3005KM)的吸水保水性和发芽率,以β-环糊精(β)、羧甲基纤维素钠(CMC)、可溶性淀粉(K)、竹炭粉(Z)和玉米芯热解粉(TD)为原料,采用水浴加热法制备,分析5种保水剂的pH值、溶胀度、吸水速率、失水速率、反复吸水性并进行发芽试验,对结果进行方差分析和多重比较。结果表明:4种复合保水剂性能均优于对照,其中以β-环糊精+羧甲基纤维素钠+可溶性淀粉+玉米芯热解粉配方的复合保水剂为最优,溶胀度达183.98mL/g,吸水速率最大,失水速率最小,发芽指数达对照的7倍。该研究可为中国未来保水剂的研究开发、生产和应用提供参考。

关 键 词:pH值  溶胀度  应用  复合保水剂  吸水速率  失水速率  吸水倍率  发芽试验
收稿时间:2011/12/28 0:00:00
修稿时间:2012/2/10 0:00:00

Properties and application of composite water retaining agent
Zhang Lu,Sun Xiangyang,Tian Yun and Gong Xiaoqiang.Properties and application of composite water retaining agent[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(15):87-93.
Authors:Zhang Lu  Sun Xiangyang  Tian Yun and Gong Xiaoqiang
Institution:(College of Soil and Water Conservation,Beijing Forestry University,Key Laboratory of Soil and Water Conservation and Desertification Combation,Ministry of Education,Beijing 100083,China)
Abstract:In order to promote the reasonable application of self-made composite water retaining agent on protected substrate cultivation for water-saving,difference of the properties of water absorption and retention and germination percentage between composite water retaining agent and the control(MP3005 KM)were compared in this paper.With β-cyclodextrin,sodium carboxymethyl cellulose,soluble starch,bamboo charcoal powder and pyrolytic corncob as raw materials,composite water retaining agents were prepared by using water bath heating.pH values,swelling degrees,water absorption rates,dehydrating rates,frequent absorbency and germination tests were analyzed and compared with analysis of variance(ANOVA)and multiple comparison tests.The results showed that four kinds of self-made composite water retaining agents all had better properties on the water absorption and retention than the control which the optimal composite water retaining agent was theβ-cyclodextrin+sodium carboxymenthyl cellulose+soluble starch +pyrolytic corncob.Theβ-cyclodextrin+sodium carboxymenthyl cellulose+soluble starch+pyrolytic corncob had higher swelling degree(183.98 mL/g),higher water absorption rate,lower water dehydrating rate and its germination index(GI)was nearly 7 times higher than the control.The study can provide a theoretical reference for development,production and application of water retaining agent in China.
Keywords:pH value  swelling  application  composite water retaining agent  water absorption rate  water dehydrating rate  water absorbency  germination test
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