Water Absorption Capacity of Straw Returns and Its Decomposing Matters

LI Jifu; HU Min; LU Jianwei

doi:10.13961/j.cnki.stbctb.2016.05.022

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Water Absorption Capacity of Straw Returns and Its Decomposing Matters

- Water Absorption Capacity of Straw Returns and Its Decomposing Matters
- Bulletin of Soiland Water Conservation Vol. 36, Issue 5, Pages: 85-90(2016)
- 作者机构：
  
  1. 华中农业大学资源与环境学院,湖北,武汉,430070
  2. 长江大学农学院,湖北,荆州,434025
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.05.022
  CLC：
- Published：2016
- 稿件说明：
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LI Jifu, HU Min, LU Jianwei. Water Absorption Capacity of Straw Returns and Its Decomposing Matters[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 85-90.
DOI：

LI Jifu, HU Min, LU Jianwei. Water Absorption Capacity of Straw Returns and Its Decomposing Matters[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 85-90. DOI： 10.13961/j.cnki.stbctb.2016.05.022.

摘要

[目的] 研究水稻、小麦和油菜作物秸秆的腐解规律及其对秸秆吸水能力的影响，为农田秸秆资源有效利用和田间水分管理提供相应的理论依据。[方法] 采用尼龙网袋法进行试验研究。[结果] 在土壤水分饱和状态下，3种秸秆腐解速率均表现为前期快，后期缓慢的特点。培养结束（110 d）时，水稻、小麦和油菜秸秆的累积腐解率分别为67.8%，55.5%和49.2%。光学显微镜结合红外光谱结果显示，与对照相比，水稻秸秆经过110 d的腐解，其物质组成、化学结构和形貌特征均发生显著变化，小麦和油菜秸秆变化不明显。腐解0 d时，水稻、小麦和油菜秸秆饱和吸水量依次分别为3.87，2.51，3.61 g/g。随着秸秆组分、结构和形貌的变化，秸秆及其腐解产物饱和吸水量也有显著性差异。水稻秸秆在腐解15 d时的饱和吸水量最大，为5.17 g/g，之后其饱和吸水量逐渐下降并趋于稳定；小麦和油菜秸秆的饱和吸水量在腐解5 d时达到最低值，分别为1.87，2.59 g/g；之后其饱和吸水量逐渐增加。单位秸秆的吸水效果表明，3种作物秸秆在腐解初期的持水量最大，之后随着腐解时期的延长而有所降低。[结论] 还田作物秸秆的吸水能力受到还田秸秆质量和腐解时期的双重影响，故在开展秸秆还田（尤其翻压）时，应注意秸秆含水量，还田时期和田间水分管理，降低由秸秆吸水产生的负面效应。

Abstract

[Objective] The objective of this study is to study the relationships between straw decomposition period and water absorption capacity of rice

wheat and rape straw in order to provide the theoretical basis for effective utilization of straw resources and field water management.[Methods] The method of nylon net bag under moisture saturation incubation was used.[Results] The decomposition rate of three crop straws was much faster at the early period than the following periods. The cumulative decomposing rates were 67.8%

55.5% and 49.2% for rice

wheat and rape straw after 110 days

respectively. The light microscopy and infrared radiation(IR) analysis indicated that the composition

chemical structure and morphology of rice straws changed greatly compared to control treatment after 110 days incubation. The results of water absorption capacity showed that the saturated water of dried rice

wheat and rape straw were 3.87

2.51 and 3.61 g/g

respectively. After 15 days incubation

the saturation water absorption of rice straw reached to the largest value of 5.17 g/g

then gradually decreased and tended to be stable. While the saturated water absorption of wheat and rape straw reached to the lowest

which were 1.87 and 2.59 g/g

respectively

after a 5 days incubation

and then increased gradually. The results of water absorption effects showed that the crop straw had the largest water retention capacity in the early decomposition period

and the water retention capacity decreased with the extension of the decomposing process. In brief

the water retention capacity of crop straw was influenced by both decomposition period and straw quality.[Conclusion] In the implement of straw returning to filed

especially for straw incorporation

we should pay more attention to straw water content

returning period and field moisture

to reduce the negative effect caused by straw water absorption.

关键词

Keywords

references

戴志刚,鲁剑巍,李小坤,等.不同作物还田秸秆的养分释放特征试验[J].农业工程学报,2010,26(6):272-276.

李树田,金继运.中国不同区域农田养分输入、输出与平衡[J].中国农业科学,2011,44(20):4207-4229.

李继福.秸秆还田供钾效果与调控土壤供钾的机制研究[D].武汉:华中农业大学,2015.

曹国良,张小曳,王亚强,等.中国区域农田秸秆露天焚烧排放量的估算[J].科学通报,2007,52(15):1826-1831.

Singh B,Shan Y H,Johnson-Beebout S E,et al. Crop residue management for lowland rice-based cropping systems in Asia[J]. Advances in Agronomy, 2008(98):117-199.

Liao Yulin,Zheng Shengxian, Xie Jian, et al. Long-term effect of fertilizer and rice straw on mineral composition and potassium adsorption in a reddish paddy soil[J]. Journal of Integrative Agriculture, 2013,12(4):694-710.

张丽,张中东,郭正宇,等.深松耕作和秸秆还田对农田土壤物理特性的影响[J].水土保持通报,2015,35(1):102-106.

牛文娟.主要农作物秸秆组成成分和能源利用潜力[D].北京:中国农业大学,2015.

Tong Xuejiao, Li Junyu, Yuan Jinhua, et al. Adsorption of Cu(Ⅱ)by biochars generated from three crop straws[J]. Chemical Engineering Journal, 2011,172(2):828-834.

Ding Yang, Jing Debing, Gong Huili, et al. Biosorption of aquatic cadmium(Ⅱ) by unmodified rice straw[J]. Bioresource Technology, 2012(114):20-25.

覃莉莉,万涛,熊磊,等.改性玉米秸秆复合高吸水树脂的尿素吸收及缓释性能[J].农业工程学报,2013,29(21):188-193.

Zhu Jianxiao, Yang Wanqin, He Xinhua. Temporal dynamics of abiotic and biotic factors on leaf litter of three plant species in relation to decomposition rate along a subalpine elevation gradient[J]. PLoS One, 2013, 8(4):e62073.

吴景贵,王明辉,万忠梅,等.玉米秸秆腐解过程中形成胡敏酸的组成和结构研究[J].土壤学报,2006,43(3):443-451.

Wang Xiaoyue, Sun Bo, Mao Jingdong, et al. Structural convergence of maize and wheat straw during two-year decomposition under different climate conditions[J]. Environmental Science & Technology, 2012(46):7159-7165.

Iqbal A, Beaugrand J, Garnier P, et al. Tissue density determines the water storage characteristics of crop residues[J]. Plant and Soil, 2013,367(1/2):285-299.

苏伟.稻草还田对油菜生长、土壤肥力的综合效应及其机制研究[D].武汉:华中农业大学,2014.

白巴特尔,郑和祥,任杰,等.寒旱灌区冻融期冬小麦不同覆盖条件土壤温度变化[J].水土保持研究,2015,22(6):134-137.

Sissoko F, Affholder F, Autfray P, et al. Wet years and farmers' practices may offset the benefits of residue retention on runoff and yield in cotton fields in the Sudan-Sahelian zone[J]. Agricultural water management, 2013(119):89-99.

Hu Yihui, Chen Lingzhi, Chen Qinglang. Studies on the litter decomposition rates of several plants[J]. Journal of Plant Ecology, 1987,11(2):124-131.

Thomas M B, Spurway M I, Stewart D P C. A review of factors influencing organic matter decomposition and nitrogen immobilisation in container media[C]. The International Plant Propagators' Society, 1999(48):66-71.

李逢雨,孙锡发,冯文强,等.麦秆、油菜秆还田腐解速率及养分释放规律研究[J].植物营养与肥料学报,2009,15(2):374-380.

Zou Peng, Xiong Hanguo, Tang Shangwen. Natural weathering of rape straw flour(RSF)/HDPE and nano-SiO

/RSF/HDPE composites[J]. Carbohydrate Polymers, 2008,73(3):378-383.

Cao Wei, Dang Zhi, Yi Xiaoyun, et al. Removal of Chromium(Ⅵ)from electroplating wastewater using an anion exchanger derived from rice straw[J]. Environmental Technology, 2013,34(1):7-14.

Chen X, Yu J, Zhang Z, et al. Study on structure and thermal stability properties of cellulose fibers from rice straw[J].Carbohydrate Polymers, 2011,85(1):245-250.

Wang X, Xia L, Tan K, et al. Studies on adsorption of Uranium(Ⅵ)from aqueous solution by wheat straw[J]. Environmental Progress & Sustainable Energy, 2012,31(4):566-576.

许晓鸿,任丽,崔斌,等.暗棕壤坡耕地水保耕作保水保土效益分析[J].水土保持通报,2014,34(1):54-57.

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