Abstract
본시험은 두과 녹비작물의 다양화를 위하여 크림손클로버의 단파 및 혼파 시 생산성과 벼 이용효과를 구명하기 위하여 수행하였다. 시험포장은 국립식량과학원에 위치한 신흥통 (식양질)에서 2007년 10월부터 2008년 10월까지 수행하였다. 파종량은 10a당 크림손클로버 2, 3, 4 kg 및 헤어리베치 5 kg 단파와 크림손클로버 (CC) 2 kg + 보리 7 kg, CC 3 kg + 보리 7 kg, CC 4 kg +보리 7 kg 및 CC2 kg + 헤어리베치 5 kg의 혼파구로 구성하였다. 크림손클로버 단파 시 biomass가 적어 잡초 (둑새풀)의 발생량은 혼파보다 많았으며 질소생산성은 낮았다. 혼파는 단파에 비하여 biomass와 질소생산성이 높았으며 혼파중에는 CC2 + 헤어리베치 5 kg이 가장 높았다. 이들을 이용하여 벼 재배 시 벼 초장, 경수 및 토양 암모니아태 질소의 함량도 혼파구에서 약간 양호한 경향을 보였다. 크림손클로버 단파 시에는 관행 쌀수량 522 kg $10a^{-1}$에 비하여 모두 유의적으로 낮았으나 혼파 처리구에서는 크림손클로버 2 kg + 헤어리베치 5 kg구가 관행과 수량차이가 없었다. 크림손클로버 이용 벼 재배 후 토양공극률은 단파에서는 다소 낮아졌으나 혼파구에서는 공극률이 증가되고 용적밀도가 감소하는 경향이었다. 크림손클로버를 답리작에서 녹비로 이용 벼 재배 시에는 단파보다 혼파가 유리하며 보리와 혼파보다는 헤어리베치와 혼파하는 것이 화학비료 대체로 친환경 쌀 생산에 유리할 것으로 판단되었다. Green manure crops are mainly used to reduce the application of chemical fertilizers. Mixture of green manure crops have beneficial effects in agroecosystem. In this study, experiments were conducted to evaluate the effects of monoculture and mixtures of crimson clover (Trifolium incarnatum) on rice growth and yield in paddy. This experiment was conducted at Sinheung series (fine loamy, mixed, nonacid, mesic family of Fluvaquentic Endoaquepts) from Oct. 2007 to Oct. 2009 at the National Institute of Crop Science (NICS), RDA, Suwon, Gyeonggi province, Korea. Seeding rates of crimson clover (CC) were consisted of monoculture (CC2, 3, 4 kg and hairy vetch 5 kg $10a^{-1}$) and mixtures (CC 2 + barley 7, CC 3 + barley 7, CC 4 + barley 7, and CC2 + hairy vetch $5kg\;10a^{-1}$). Seeds were drilled by partial tillage machine on 9th Oct. in 2007. Monoculture and mixture of crimson clover as a green manure crop was incorporated in soil for rice cultivation on 15th May in 2008. Chemical fertilizers had not been applied to monoculture and mixture plots. The biomass and N production of monoculture plots were lower than mixture plots. The biomass and N production of CC 2 + hairy vetch $5kg\;10a^{-1}$ plot were the highest among mixtures treatments. In rice growing season, ammonium nitrogen concentrations in soil were a little high trends at CC 2 + hairy vetch $5kg\;10a^{-1}$ plot. And soil bulk density and porosity were improved at mixture plot after rice harvesting. The rice yield of CC 2 + hairy vetch $5kg\;10a^{-1}$ plot was not significantly different from conventional practice plot. These results indicated that cropping of crimson clover with hairy vetch mixture was better than barley mixture for environmental friendly rice cultivation.
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Claims 8
Claim · model-written summary
The biomass and N production of crimson clover monoculture plots were lower than those of mixture plots.
- Taxon
- Trifolium incarnatum
Trifolium incarnatumt0 - Treatment
- monoculture plotse1
- Outcome
- biomass and N productione1
- Direction
- lowere1
- Comparator
- mixture plotse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Trifolium incarnatum”
e1“The biomass and N production of monoculture plots were lower than mixture plots”
Claim · model-written summary
Among mixture treatments, the crimson clover 2 + hairy vetch plot had the highest biomass and N production.
- Taxon
- Trifolium incarnatumTrifolium incarnatumt0
- Treatment
- CC 2 + hairy vetche2
- Outcome
- biomass and N productione2
- Direction
- higheste2
- Comparator
- mixtures treatmentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Trifolium incarnatum”
e2“The biomass and N production of CC 2 + hairy vetch $5kg\;10a^{-1}$ plot were the highest among mixtures treatments”
Claim · model-written summary
Soil ammonium nitrogen concentrations in the rice growing season tended to be a little higher at the crimson clover 2 + hairy vetch plot.
- Taxon
- rice
Oryza sativae3 - Treatment
- CC 2 + hairy vetche3
- Outcome
- ammonium nitrogen concentrations in soile3
- Direction
- a little highe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In rice growing season, ammonium nitrogen concentrations in soil were a little high trends at CC 2 + hairy vetch”
Claim · model-written summary
Soil bulk density and porosity were improved at the mixture plot after rice harvesting.
- Taxon
- riceOryza sativae4
- Treatment
- mixture plote4
- Outcome
- soil bulk density and porositye4
- Direction
- improvede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“And soil bulk density and porosity were improved at mixture plot after rice harvesting”
Claim · model-written summary
The rice yield of the crimson clover 2 + hairy vetch plot was not significantly different from the conventional practice plot.
- Taxon
- riceOryza sativae5
- Treatment
- CC 2 + hairy vetche5
- Outcome
- rice yielde5
- Direction
- not significantly differente5
- Comparator
- conventional practice plote5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The rice yield of CC 2 + hairy vetch $5kg\;10a^{-1}$ plot was not significantly different from conventional practice plot”
Claim · model-written summary
Rice yield after crimson clover monoculture was significantly lower than the conventional yield of 522 kg per 10 a.
Verbatim
e6“크림손클로버 단파 시에는 관행 쌀수량 522 kg $10a^{-1}$에 비하여 모두 유의적으로 낮았으나”
Claim · model-written summary
In crimson clover monoculture, weed (Poa annua, dukse-pul) occurrence was greater than in mixtures.
- Taxon
- Trifolium incarnatumTrifolium incarnatumt0
- Treatment
- 단파e7
- Interactor
- 둑새풀e7weed
- Outcome
- 잡초 (둑새풀)의 발생량e7
- Direction
- 많았으며e7
- Comparator
- 혼파e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Trifolium incarnatum”
e7“크림손클로버 단파 시 biomass가 적어 잡초 (둑새풀)의 발생량은 혼파보다 많았으며”
Claim · model-written summary
The authors concluded that cropping crimson clover with hairy vetch was better than with barley for environmentally friendly rice cultivation.
- Taxon
- riceOryza sativae0
- Outcome
- environmental friendly rice cultivatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cropping of crimson clover with hairy vetch mixture was better than barley mixture for environmental friendly rice cultivation”
The same questions in other papers
Vicia villosa · yield · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 6 reporting no difference from an alternative
- negative
- positive
- positive
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See all 10 papers →Vicia villosa · nutrient: content · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
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.