Abstract
In direct-seeding cultivation of rice, it is possible to save working time for growing and transplanting seedlings. In Hokkaido, where the management area of one farm is larger than that of other parts of Japan, the area of direct-seeding cultivation in large-sized paddy fields with groundwater level control systems has been increasing. Irrigation requirements increase in some cases of direct-seeding compared with the transplanting cultivation. To disseminate direct-seeding in an area it is necessary that the increases in irrigation requirements be within the permissible range of the irrigation of the area. The authors compared three cultivation methods: direct-seeding in non-puddled submerged paddy fields, direct-seeding in well-drained paddy fields, and transplanting cultivation, by using a large-sized block paddy field with the groundwater level control system facilities in Moseushi Town of Hokkaido. The following were clarified: 1) The difference in infiltration was small between the transplanting and direct-seeding cultivation methods. 2) The water supply volume, which is the sum of the irrigation requirement and the effective rainfall, of the three methods had very few differences in the period from the initial water intake and the re-submerging of the field because the groundwater level in the vicinity of the field was comparatively high and the infiltration was small. 3) The quantity of water intake during the period of shallow water management in direct-seeding cultivation is comparable to the puddling water requirement in transplanting cultivation.
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Claims 3
Claim · model-written summary
Infiltration differed little between direct-seeding and transplanting cultivation of rice.
- Taxon
- rice
Oryza sativae0 - Treatment
- direct-seedinge2
- Outcome
- infiltratione2
- Direction
- no_changeinferrede2
- Comparator
- transplantinge2
- Setting
- Moseushi Town of Hokkaidoe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In direct-seeding cultivation of rice, it is possible to save working time for growing and transplanting seedlings”
e1“The authors compared three cultivation methods: direct-seeding in non-puddled submerged paddy fields, direct-seeding in well-drained paddy fields, and transplanting cultivation, by using a large-sized block paddy field with the groundwater level control system facilities in Moseushi Town of Hokkaido”
e2“The difference in infiltration was small between the transplanting and direct-seeding cultivation methods”
Claim · model-written summary
Water supply volume of the three rice cultivation methods differed very little from initial water intake to re-submerging of the field.
- Taxon
- riceOryza sativae0
- Treatment
- three methodse3
- Outcome
- water supply volumee3
- Direction
- no_changeinferrede3
- Setting
- Moseushi Town of Hokkaidoe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In direct-seeding cultivation of rice, it is possible to save working time for growing and transplanting seedlings”
e1“The authors compared three cultivation methods: direct-seeding in non-puddled submerged paddy fields, direct-seeding in well-drained paddy fields, and transplanting cultivation, by using a large-sized block paddy field with the groundwater level control system facilities in Moseushi Town of Hokkaido”
e3“The water supply volume, which is the sum of the irrigation requirement and the effective rainfall, of the three methods had very few differences in the period from the initial water intake and the re-submerging of the field”
Claim · model-written summary
Water intake during shallow water management in direct-seeding rice was comparable to the puddling water requirement of transplanting.
- Taxon
- riceOryza sativae0
- Treatment
- shallow water management in direct-seeding cultivatione4
- Outcome
- quantity of water intakee4
- Direction
- no_changeinferrede4
- Comparator
- puddling water requirement in transplanting cultivatione4
- Setting
- Moseushi Town of Hokkaidoe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In direct-seeding cultivation of rice, it is possible to save working time for growing and transplanting seedlings”
e1“The authors compared three cultivation methods: direct-seeding in non-puddled submerged paddy fields, direct-seeding in well-drained paddy fields, and transplanting cultivation, by using a large-sized block paddy field with the groundwater level control system facilities in Moseushi Town of Hokkaido”
e4“The quantity of water intake during the period of shallow water management in direct-seeding cultivation is comparable to the puddling water requirement in transplanting cultivation”
The same questions in other papers
transplanting · soil: physics · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 12 reporting no difference from an alternative
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.