Journal of irrigation engineering and rural planning最新文献_第10页

A Comparison of Tractor Wheel But Ditch and Traditional Ditch Methods of Field Drainage in Wet Seeding Rice Culture 水稻湿播栽培中拖拉机轮沟与传统沟的田间排水比较

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/jierp1982.1993.19

H. Fujii, H. Hiraoka, Y. Kanetani, N. Sasano

{"title":"A Comparison of Tractor Wheel But Ditch and Traditional Ditch Methods of Field Drainage in Wet Seeding Rice Culture","authors":"H. Fujii, H. Hiraoka, Y. Kanetani, N. Sasano","doi":"10.11408/jierp1982.1993.19","DOIUrl":"https://doi.org/10.11408/jierp1982.1993.19","url":null,"abstract":"As a method of improving field drainage in wet direct seeding rice culture, surface water drainage by tractor wheel rut ditch is compared with traditional drainage methods. It is shown that this method of drainage leads to an improvement in the conditions of both ponding spots and vacant spots. The relationship between seedling establishment density and the ponding period is analyzed through field experiments. The experiments were carried out in the experimental field in the Muda Irrigation area in Peninsular Malaysia in the second cropping seasons of 1989 and 1990. Two types of ditches-tractor wheel rut ditches and the traditional type of ditch made by pulling soil-filled rice sacks across the field-were tested and compared with a control Plot where no ditches were constructed. All three plots had earlier been levelled. The progress of the drainage after puddling was analyzed along with that of the ponding spot areas, vacant spot areas, the ponding period, and seedling establishment density. These experiments showed that the drainage effect, seedling establishment density and vacant spot conditions were most favorable in the plot with tractor wheel rut ditches and the worst in the control plot, which had no ditches. Vacant spots were shown to occupy 3% of the area in the tractor ditch plot, 6.6% in the traditional ditch plot, and 8.5% in the control plot. A close correlation between the existence of the ponding spots and vacant spots was noted in each area. That is, in a plot with small ponding spots, the vacant spots were also small. Furthermore, it was observed that the longer the ponding period was, the lower was the seedling establishment density. When ponding days were longer than three days, seedling establishment density was less than 100/m2, whereas if ponding was longer than five days it was less than 50/m2.","PeriodicalId":137099,"journal":{"name":"Journal of irrigation engineering and rural planning","volume":"10 Suppl 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126055218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Operation and Maintenance of Irrigation Systems 灌溉系统的操作和维护

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1984.6_30

R. Nakamura

引用次数: 0

Optimum Water Use in Run-of-the-River Irrigation: A Case Study of the Manu River Project 径流灌溉的最佳用水:以马努河工程为例

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1992.43

M. Miah, A. K. M. Momtazuddin

引用次数: 0

Runoff Analysis of Low-lying Drainage Basins in Japan 日本低洼流域径流分析

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1985.8_5

Shiomi Shikasho, Kohei Tanaka

引用次数: 7

Water Management and Operation of Irrigation System in Low Lying Paddy Area with Creek Network 低洼水田渠网灌溉系统的水管理与运行

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1988.36

M. Kuroda, Toshio Cho

引用次数: 5

Effects of Ridge Length and Mulching on Erosion Control 垄长和覆盖对土壤侵蚀控制的影响

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1991.7

Manas Losirikul, K. Nagahori, T. Amaya

引用次数: 0

Some Considerations on Irrigation Projects in Southeast Asia 对东南亚地区灌溉工程的几点思考

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1983.4_7

Y. Uchiyama

引用次数: 0

Leaching Effect of Saline Drainage Water on Exchangeable Cations in Soil 含盐排水对土壤交换性阳离子的淋滤效应

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1993.4

Md. Zahurul Islam

{"title":"Leaching Effect of Saline Drainage Water on Exchangeable Cations in Soil","authors":"Md. Zahurul Islam","doi":"10.11408/JIERP1982.1993.4","DOIUrl":"https://doi.org/10.11408/JIERP1982.1993.4","url":null,"abstract":"Very little information is available in the literature on the effect of saline drainage water irrigation on exchangeable cations in soil. Nowadays, due to the scarcity of fresh water, saline drainage water is widely used for irrigation and leaching salts from salt-affected lands. But the effect of this saline drainage water on exchangeable cations in soil is almost unknown to many scientists. Considering this situation, experiments were carried out in soil monoliths of undisturbed structures with the height of 100cm and diameter of 200mm. The soil monoliths were taken from the silty sand saltaffected soil of collective farm No.6-A of the Hunger Steppe of Uzbekistan, USSR. In the experiments fresh river and saline drainage water were used for leaching (irrigation). Soil monoliths were installed vertically at the laboratory of the All Union Scientific Cotton Research Institute of Central Asia (AUSCRICA). Both fresh river and saline drainage water with Total Dissolved Solids (TDS) 7.200-7.318 g/l were continuously supplied on the surface of the soil monoliths from an automatic water supply container which helped to maintain a constant water head of 10cm over the surface of the monoliths during the period of leaching (irrigation). Salt contents and exchangeable cations in soil were determined before and after leaching (irrigation). Results of the experiments revealed that cations of exchangeable calcium increased and cations of exchangeable magnesium, sodium and total exchangeable cations decreased in soil due to the effect of river water used for irrigation. But cations of exchangeable calcium and magnesium increased more remarkably and those of exchangeable sodium and total exchangeable cations decreased more sharply in soil, resulting in increased water infiltration, porosity and hydraulic conductivity of soil due to the effect of saline drainage water used for leaching (irrigation).","PeriodicalId":137099,"journal":{"name":"Journal of irrigation engineering and rural planning","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130910201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Series of Experimental Hydraulic Studies on the Hydraulic Designs of Irrigation Structures in Rivers and Channels 江河沟渠灌溉结构水力设计的一系列水力试验研究

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1991.46

F. Matsushita

引用次数: 0

The Use of Agroforestry as a Soil Conservation Strategy in the Philippines 菲律宾农林业作为土壤保持战略的应用

Journal of irrigation engineering and rural planning Pub Date : 1900-01-01 DOI: 10.11408/JIERP1982.1994.27_49

S. M. Medina, M. Anase, H. Narioka

引用次数: 1