The change of soil condition by rotation from paddy to other crops and examination of the method of farm land consolidation
水稻轮作土壤状况的变化及农地整理方法探讨
基本信息
- 批准号:61560260
- 负责人:
- 金额:$ 1.47万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1986
- 资助国家:日本
- 起止时间:1986 至 1988
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The study is made up of two sections which are undermentioned.(1) On the problems of the water requirment of rotational paddy fields. At first on the problem of water requirment of rotational paddy fields, effective soil layer of rotational paddy field, soil moisture extraction pattern, amount of each irrigation and soil moisture content when plant had to be irrigated were examined. Consequently, for the existence of plowsole effective soil layer of rotational paddy field is shallow and soil moisture extraction pattern becomes shallow layer extraction pattern. For the reason it became clear that value of total readily available moisture became small, and interval of irrigation became short and the number of times of irrigation became large. And when plants are cultiwated in the rotational paddy field, it is necessary that soil moisture is wet when plants are irrigated.(2) On the problems of the drainage of rotational paddy fields. In oder to predict the surface drainage discharge of a rotational paddy field, we proposed the runoff simulation model, which was composed of the eqeations of water balance and motion in ridge soil and furrow space. And by applying it to the observed runoff data of test fields, the value of the model parameters was able to be identifiedand the relation between the value of the parameters and soil permeability of test fields was examined. Furthermore, as a result of simulation by this model, the runoff coefficients of a design rainfall was able to be obtained.
本研究报告由下文所述的两部分组成。(1)关于水田轮作需水问题的探讨。针对轮作稻田的需水问题,首先对轮作稻田的有效土层、土壤水分提取方式、每次灌水量和需灌水时的土壤含水量进行了研究。因此,由于犁底层的存在,轮作稻田的有效土层较浅,土壤水分提取模式为浅层提取模式。结果表明,土壤有效水分总量变小,灌水间隔变短,灌水次数变多。在轮作稻田中种植作物时,灌溉时土壤水分必须湿润。(2)论轮作稻田排水问题。为了预测轮作稻田的地表排水量,本文提出了由水分平衡方程和垄间运动方程组成的径流模拟模型。并将其应用于试验田实测径流资料,对模型参数进行了识别,并对模型参数与试验田土壤渗透性的关系进行了检验。此外,作为该模型模拟的结果,能够获得设计降雨的径流系数。
项目成果
期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
四方田穆・千家正照: 農業土木学会誌. 56(11). 1109-1114 (1988)
Mu Shikata 和 Masateru Senke:日本农业和土木工程师学会杂志 56(11) (1988)。
- DOI:
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- 影响因子:0
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四方田穆,千家正照: 農業土木学会誌. 56 (11). 1109-1114 (1988)
Mu Yomota,Masateru Senke:日本农业和土木工程师学会杂志 56 (11) (1988)。
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Masateru Senge; Tsutomu Nishiide; Tadashi Adachi: "Rnuoff Simulation Model and Unit Area Surface Disign Peak Runoff Coefficients of Rotational Paddy Field" Transactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering. 138. 43-5
圣吉正辉;
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Atushi Yomoda; Masateru Senge: "Change of Runoff Characteristics by using paddy fields as dry fields" Journal of the Japanese Society of Irrigation, Drainage and Reclamation Engineering. 56(11). 1109-1114 (1988)
与田淳;
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千家正照,西出勤,足立忠司: 農業土木学会論文集. 131. 43-50 (1987)
Masateru Senke、Tsutomu Nishide、Tadashi Adachi:日本农业和土木工程师学会会议记录 131. 43-50 (1987)。
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NISHIDE Tsutomu其他文献
NISHIDE Tsutomu的其他文献
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{{ truncateString('NISHIDE Tsutomu', 18)}}的其他基金
Study on economic duty of water and optimum scale of irrigation facilities
水经济责任及灌溉设施最佳规模研究
- 批准号:
02302081 - 财政年份:1990
- 资助金额:
$ 1.47万 - 项目类别:
Grant-in-Aid for Co-operative Research (A)