Influence of Direct Seeding Culture in a Well-drained and Non-tilled Paddy Field on Water Requirement-Case study on water requirement of Sunami district, Gifu Prefecture-
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Accession number;03A0395288
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| Title;Influence of Direct Seeding Culture in a Well-drained and Non-tilled Paddy Field on Water Requirement-Case study on water requirement of Sunami district, Gifu Prefecture- |
| Author;
LEE S
(Gifu Univ., JPN)
SENGE MASATERU
(Gifu Univ., Faculty of Agriculture, JPN)
ITO KENGO
(Gifu Univ., Faculty of Agriculture, JPN)
HAYASHI HIROYASU
(Gifu Univ., Faculty of Agriculture, JPN)
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Journal Title;Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering
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Journal Code:S0345A
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ISSN:0387-2335
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VOL.;NO.224;PAGE.159-166(2003)
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| Figure&Table&Reference;FIG.3, TBL.7, REF.7 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The water requirement of transplanting culture (TC) consisting of 16 plots and direct seeding culture in a well-drained paddy field (DC) also having 15 plots were measured in order to clarify the influence of adopting DC on water requirement. Each plot was maintained under different cultivation conditions. Those varied cultivation conditions were classified into 7 items. Subsequently, the relationship between water requirement and the 7 items were analyzed by evaluating the average water requirement in each condition and using the theory of quantification (I) to clarify the items influencing water requirement. From the analysis of the results, the water requirement of DC was determined to be 3.5 times that of the TC. Furthermore, water requirement in DC was influenced by ponding depth and water level in drain canal. It can be deduced that the increase of water requirement in DC is caused by increases in vertical and horizontal Infiltration through the plowsole and levee, respectively, in the absence of puddling and levee coating. (author abst.) |
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