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Yu J.,Water Resources Research Institute of Inner Mongolia | Zhou C.,Inner Mongolia Agricultural University | Zhou C.,Economics and Finance Institute | Shi H.,Inner Mongolia Agricultural University | And 3 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2011

Geosynthentic clay liners (GCL) have great application value in canal lining projects. In order to estimate the effects of aging factors on the mechanical properties of GCL as canal lining materials, a series of laboratory simulation and field experiments in Inner Mongolian Hetao irrigation district were conducted to test effects of the five aging factors on the mechanical indexes of three kinds of GCL. The results indicated that temperature, humidity and ultraviolet radiation had some effects on the mechanical properties of GCL. The effects of high temperature on mechanical properties of GCL were more significant than those of low temperature, and the effects of high-low temperature cycling were weaker than effects of high or low temperature separately. Three kinds of mechanical properties of GCL samples was decreased by 34.27%, 35.77%, 45.02% after high temperature (60°C) aging 72 h and 19.51%, 31.49%, 18.40% after low temperature(-40°C) aging 72 h, 19.32%, 32.62% and 38.28% after high-low temperature cycling(-40°C for 12h and 60°C for 12 h) 10 times and 29.08%, 18.31% and 36.17% after Ultraviolet radiation 1200 h, respectively. The mechanical properties of 2 # and 3 # decreased by 12.41%, 13.08%, but 1# has no change with GCL moisture content from 50% to 100% after high temperature (60°C) aging 24 h. GCL in field aged faster in the first year, and the mechanical properties of the three samples decreased by 12.1%, 18.5% and 17.8% respectively while mechanical properties varied mitigatively after one year. This research can provide references for the application of GCL as canal lining materials.


Zhou C.,Inner Mongolia Agricultural University | Zhou C.,Economics and Finance Institute | Shi H.,Inner Mongolia Agricultural University | Yu J.,Water Resources Research Institute of Inner Mongolia
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2012

In order to study the seepage control performance of Geosynthetic Clay Liner (GCL) in lining channel in the cold and arid regions, the antifreeze characteristics of three different GCL (produced in Korea and China, 1#, 2#, 3#) were studied with indoor simulation method. The results showed that by hydrating with the Yellow River water and after 31 times of freeze-thaws, the free swelling volume of 1#?2#?3# GCL increased by 16.7%, 4.5% and 8.0% respectively; The filtration loss reduced by 31.1%, 28.9% and 27.0% respectively; The yield value increased by 200.0%, 23.3% and 90.6% respectively, and the EC values of the filtrate reduced by 27.3%, 27.0% and 31.0% respectively. The permeability coefficient increased by one order of magnitude, but was still small, which was 0.35-0.72% in canal bed. These indicated the GCL can be used in canal lining in the northwest arid and saline regions.


Zhao L.,Inner Mongolia Agricultural University | Zhao L.,Hainan University | Ma T.,Inner Mongolia Agricultural University | Yu J.,Water Resources Research Institute of Inner Mongolia | And 3 more authors.
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering | Year: 2014

Inner Mongolia Dengkou pumping irrigation area was considered as the research object, of which channel water from Yellow River. The thickness of silting in front of the intake pumping station before opening and after stopping pump in four irrigation period was measured, and water draw rate and sediment concentration into the canal was tested during the pump working. The siltation features and into canal characteristics at water inlet were studied. Results show that the velocity ratio and diversion width of the Yellow River upstream of the intake are the main factors of influence on sediment into the canal, when the flow velocity is reducing, and diversion width is increasing, the influence of cross current is more intense when more bed sediment is brought into water intake. For the lateral intake, the water mainstream area is moving to the downstream. Under both effects of flat backflow and cross current, the bed sediment distribution thickness in front of water intake appears greater at intake upstream than downstream. The block sand bar in front of intake can effectively prevent the bed load into the canal, the results indicate that the top of the block sand bar is below the free surface within 1.6 m, not only the sediment into the canal can be greatly reduced, and the better flow regime can be obtained to prevent pump cavitation.


Wang Y.,Water Resources Research Institute of Inner Mongolia | Wang S.,Water Resources Research Institute of Inner Mongolia | Feng X.,Water Resources Research Institute of Inner Mongolia | Cheng Z.,Water Resources Research Institute of Inner Mongolia | And 2 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2011

In order to probe the ecological groundwater table along the mainstream and in the downstream tributary-intensive areas of Ejina River, GPS, RS and GIS technology were applied to analyze the interactions between ground water table and different plant communities based on the data of observed long-term groundwater tables. The single point method was used in analysis of east-west river mainstream areas and west river downstream. The method of overlay between the groundwater table and the plant communities was used for analyzing east river downstream tributary-intensive areas. The results showed that the ecological ground water table was changed in different areas. It was estimated as 2.14 to 2.27 m in the east-west mainstream areas with a variable range of 0.61 to 1.14 m, 2.52 to 3.88 m in the west river downstream areas with a variable range of 0.90 to 1.09 m, and 2.48 to 3.39 m in the northern Andou Grassland areas with a variable range of 0.26 to 0.33 m. The different ground water depth associated with different plant communities in the tributary-intensive areas of the downstream of east river. Populus euphratica community appeared in the areas where the groundwater table was less than 3.0 m with a variable range of 0.51 to 1.41 m. Tamarix ramossima community appeared in the areas where the groundwater table was 3.0 to 6.0 m with a variable range of 0.85 to 1.94 m, and weed habitat appeared in the areas where the groundwater table was 3.0 m with a variable range of 1.41 to 2.46 m. The results are helpful for the allocation of surface water in Ejina eco-irrigation district.


Yang W.,Yangtze University | Yang W.,China Agricultural University | Zhu J.,Yangtze University | Wu Q.,Yangtze University | And 2 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2015

In the middle and lower reaches of Yangtze River, China, rain-waterlogging and high temperature occur simultaneously and have a high probability after rainfall in summer. Thus, they are the two limiting factors for cotton growth. It is unclear about the response of cotton to waterlogging under high temperature stress. This study investigated the growth and physiological metabolism characteristic of cotton seedlings under combination of waterlogging and heat stress. A pot experiment was conducted in Jingzhou, China during the growing season of cotton in 2013 using two-factor completely randomized block. Waterlogging and high temperature were designed as treatments. Waterlogging treatments included 0, 3, 6 and 9 days and the heat stress experienced continually for 0 and 3 days during the cotton seedling stage. Principal morphological indexes, chlorophyll fluorescence parameters and antioxidant enzymes of plants were measured at the end of experiment. The results showed that: 1) Morphological parameters of cotton crops were not significantly affected by high temperature stress when waterlogging duration was less than 3 days; but when waterlogging lasted for 3 days above, the constant high temperature condition could lower the plant height, leaf area and dry matter weight, and the roots to shoot ratio; the changes in these parameters induced by waterlogging under high temperature were generally 3 days earlier than that under the regular temperature; 2) The photosynthetic physiological indexes of the fourth leaves including chlorophyll (Chl) a, Chl b and photosystem II variable fluorescence to maximum fluorescence ratio, and fluorescence to original fluorescence ratio decreased with increasing waterlogging duration under the high temperature condition, but the ratio of Chl a and Chl b remained the same; 3) Under the natural temperature conditions, the antioxidant enzymes in roots and leaves including the superoxide dismutase (SOD) and peroxidase (POD) activity rapidly declined with the increment of waterlogging days, whereas malondialdehyde (MDA) was opposite; 4) Affected by the interactive effects of waterlogging and high temperature, the SOD and POD activities of leaves increased firstly and then decreased, their maximum and minimum values all occurred in the 3 and 9 days of waterlogging; the MDA content was increased obviously, indicating that the heat stress aggravated cell membrane damage degree; and 5) The waterlogging stress was the main limiting factor of cotton growth in the seedling stage, followed by heat stress; Moreover, there existed the significant interaction effects of Chl, Chl a, the ratio of Chl a and Chl b, and PS II maximum photochemical quantum yield as well as SOD, POD and MDA of leaves under the interactive influence of high temperature and waterlogging. The research may provide data support for cotton stress-resistance cultivation and drainage management in the middle and lower reaches of China. © 2015, Chinese Society of Agricultural Engineering. All right reserved.


Yu J.,Water Resources Research Institute of Inner Mongolia | Lei T.,China Agricultural University | Shainberg I.,Institute of Soil, Water and Environmental Sciences | Zhang J.,Water Resources Research Institute of Inner Mongolia
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2010

Surface application of polyacrylamide (PAM) can increase infiltration and reduce soil erosion. In order to research the effects of different application methods of polyacrylamide (PAM), three forms of PAM (emulsive, solutions and dry granules) and application methods of dry granule PAM mixed were studied in this article. The results showed that surface applications of three forms of PAM increased infiltration and reduced soil erosion significantly. The final infiltration rate for emulsive, solution and dry granular PAMs increased by 1-2.5, 1.7-2.8, 0.25-1.8 times compared with their controls respectively. As for application methods of dry granule PAMs, spreading dry granular PAM on soil surface was more effective in increasing infiltration than mixing dry granular PAM with topsoil. The gypsum mixed with dry PAMs increased the efficiency of dry PAMs in increasing infiltration which increased with the amount of gypsum. The soil erosion for surface spreading dry granular PAM decreased by 80% compared with the control, which was closed to reductions of emulsive and solutions PAM treatments. However, dry granular PAM mixed with layer of topsoil decreased the efficiency of PAM in reducing soil erosion reduction. The gypsum mixed with dry granular PAM increased effectiveness of PAM in increasing infiltration, but decreased the significance of controlling soil erosion. It can be concluded by comparsion of three forms of PAMs effects on infiltration and erosion that the surface applications of dry granular PAMs can cbtain the similar results as emulsive or dissoluted PAMs in controlling infiltration and erosion and is cost effective, facilitate uses in rainfed areas.


Li P.,China Agricultural University | Yu J.,Water Resources Research Institute of Inner Mongolia | Lu L.,China Agricultural University | Song R.,Water Resources Research Institute of Inner Mongolia | And 2 more authors.
American Society of Agricultural and Biological Engineers Annual International Meeting 2014, ASABE 2014 | Year: 2014

In order to evaluate effect of super absorbent polymers (SAP) and the fulvic acid (FA) on plant growth and water use efficiency, a pot experiment was carried out with a spring corn (cultivar Single 204) on soil collected from Inner Mongolia China under different soil moisture conditions (40-50% and 70-80% of field capacity). The application rate of the SAP was 45 kg hm-2 and that of FA varied from 30 to 60 and 120 kg hm-2. The plant height increased with application of SAP alone or with joint application of SAP and FA. Under low soil moisture condition, foliar application of the FA effectively promoted root growth. Moreover, the joint application of SAP and the FA increased net photosynthetic rate, reduced the plant's water consumption capacity, and increased root to shoot ratio, grain yield and water use efficiency. The effect was more significant especially under low soil moisture condition. The results demonstrated that the combined application of SAP and FA has positive effects on corn growth, yield, and water use efficiency. The recommended amount was 45 kg hm-2 for the SAP and 120 kg hm-2 for the FA. The abstract is often the only part of the paper to be read, so include your major findings in a useful and concise manner. Include a problem statement, objectives, brief methods, quantitative results, and the significance of your findings. The abstract should be no more than 250 words long.


Li Q.,Inner Mongolia University | Liu J.,Inner Mongolia University | Zhang L.,Inner Mongolia University | Chen Q.,Agriculture and Agri Food Canada | And 2 more authors.
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2013

To explore drought resistant effects of water-retaining agent, straw mulch and plastic film mulch between lines on osmotic substances and plasmas membrane system and yield of potato under dry farming, potato variety 'Shepody' was used, and totally six treatments such as straw mulch, plastic film mulch between lines, control group, and combined with water-retaining agent were set in the field experiment. The results showed that the value of plasmas membrane permeability was larger at seedling stage, then decreased and increased again from tuber bulking stage. Contents of proline and malonaldehyde presented a gradual increment trend in different growth stages, but content of soluble sugar showed a single-peak curve change. Lower contents of osmotic regulation substances and plasmas membrane permeability were observed in the treatments of plastic mulch between lines combined with water-retaining agent, water-retaining agent, straw mulch, and straw mulch combined with water-retaining agent, all these treatments released drought stress efficiently. Potato growth anaphase, till starch accumulation stage, proline content, soluble sugar content, plasma membrane permeability and malondialdehyde content changes were relatively stable. Compared with control group, the four indexes of plastic mulch between lines combined with water-retaining agent treatment decreased by 15.57%, 6.90%, 42.79% and 17.69%, respectively. The four indexes of water-retaining agent treatment decreased by 2.31%, 5.17%, 10.62% and 8.04%, respectively, which of straw mulch treatment decreased by 28.45%, 3.45%, 51.63% and 25.58%, respectively, and 25.14%, 12.07%, 49.17% and 22.58%, respectively for straw mulch combined with water-retaining agent treatment. At potato mature stage, soil moisture content under straw mulch combined with water-retaining agent treatments changed stably, 0-20 cm soil moisture content under water-retaining agent treatment was higher than that without water-retention agent treatments. Straw mulch combined with water-retaining agent, plastic mulch between lines combined with water-retaining agent and water-retaining agent treatments increased yield and commodity tuber rate of potato significantly (P<0.05). In all, straw mulch treatment decreased drought stress mostly, straw mulch combined with water-retaining agent, plastic mulch between lines combined with water-retaining agent and water-retaining agent treatments relieved drought stress obviously, and promoted potato growth and development and yield effectively.

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