돈분액비를 시용한 녹비보리 및 헤어리베치의 혼입시기가벼 수량에 미치는 영향
Effect of Incorporation Times of Green Barley and Hairy Vetch on Rice Yield in Paddy Soil with Liquid Pig Manure
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BACKGROUND: Soil incorporation of green manurecrop(GMC) and liquid pig manure(LPM) is one of themethods for reduction of chemical fertilizer and theincrease of crop yield. The objective of this study was toselect optimal incorporation time of GMCs on growth andnutrient property in paddy soil treated LPM. METHODS AND RESULTS: The kinds of GMCs wereHordeum vulgare L.(green barley, GB) and Vicia villosaroth(hairy vetch, HV). The effects of GMCs on rice yieldwere investigated under different incorporation times ofGMCs(LPM1: at 25 days before rice transplantation,LPM2: at 18 days before rice transplantation, LPM3: at 11days before rice transplantation). In GB treatments, thebiomass was greater in the order of LPM3 ≧ LPM2 ≧LPM1. Contents of N, P and K ranged 1.21∼1.28, 0.36∼0.38 and 1.41∼1.45%, respectively, regardless ofincorporation times. The amounts of nutrient supply in GBtreatments were higher in LPM1 than those in othertreatment conditions. In GB treatments, rice yields inLPM1, LPM2 and LPM3 were 523, 525 and 526(increasingyield 3% than control) kg/10a, respectively. In HVtreatments, the amounts of nutrient supply were higher inthe order of LPM3 ≧ LPM2 ≧ LPM1. Rice yields were530 kg/10a for LPM1, 531 kg/10a for LPM2, 535(increasing yield 5% than control) kg/10a for LPM3 in HVtreatments, respectively. CONCLUSION(s): The optimum incorporation time ofgreen barley and hairy vetch was at 11 days before ricetransplantation(LPM3) in paddy soil with liquid pigmanure.
Abstract
BACKGROUND: Soil incorporation of green manurecrop(GMC) and liquid pig manure(LPM) is one of themethods for reduction of chemical fertilizer and theincrease of crop yield. The objective of this study was toselect optimal incorporation time of GMCs on growth andnutrient property in paddy soil treated LPM. METHODS AND RESULTS: The kinds of GMCs wereHordeum vulgare L.(green barley, GB) and Vicia villosaroth(hairy vetch, HV). The effects of GMCs on rice yieldwere investigated under different incorporation times ofGMCs(LPM1: at 25 days before rice transplantation,LPM2: at 18 days before rice transplantation, LPM3: at 11days before rice transplantation). In GB treatments, thebiomass was greater in the order of LPM3 ≧ LPM2 ≧LPM1. Contents of N, P and K ranged 1.21∼1.28, 0.36∼0.38 and 1.41∼1.45%, respectively, regardless ofincorporation times. The amounts of nutrient supply in GBtreatments were higher in LPM1 than those in othertreatment conditions. In GB treatments, rice yields inLPM1, LPM2 and LPM3 were 523, 525 and 526(increasingyield 3% than control) kg/10a, respectively. In HVtreatments, the amounts of nutrient supply were higher inthe order of LPM3 ≧ LPM2 ≧ LPM1. Rice yields were530 kg/10a for LPM1, 531 kg/10a for LPM2, 535(increasing yield 5% than control) kg/10a for LPM3 in HVtreatments, respectively. CONCLUSION(s): The optimum incorporation time ofgreen barley and hairy vetch was at 11 days before ricetransplantation(LPM3) in paddy soil with liquid pigmanure.
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