철분코팅 볍씨를 이용한 벼 직파재배의 생육 특성 및 수량

박광호,박성태,Park, K.H.,Park, S.T. 국립한국농수산대학교 교육개발센터 2018 현장농업연구지 = Journal of practical agricultural resear Vol.20 No.1

The field trial was performed to evaluate the rice growth and yield in direct seeding cultivation with iron-coated rice seeds. The required time for seed emergence was for 9~11days in the tested direct seeding methods. That was 1~2days earlier in direct seeding with pregerminated seeds than that of direct seeding with iron-coated seeds. The seedling establishment was highest in water seeding with iron-coated seeds but there was not significant difference in terms of statistical analysis. The rice plant height was taller in water seeding with broadcasting method than that of wet hill-seeding methods and in direct seeding with iron-coated seeds than that of direct seeding with pregerminated seeds. The tiller number in the rice plant was the highest in machine transplanting at 30days after direct seeding(June 17) and in water seeding with iron-coated seeds at 45days after seeding(DAS) and 60DAS. The tiller number of 75 and 90DAS in the tested rice cultivation methods being with 352~405/m² was not significantly different in terms of statistical analysis. The heading time was not different in rice direct seeding methods but 2 day earlier in direct seeding with iron-coated seeds than that of direct seeding with pregerminated seeds. The culm length was the highest in water seeding with iron-coated seeds and the panicle length was the longest in wet hill-seeding with pregerminated seeds. The panicle number per m² was highest in water seeding with iron-coated seeds but not significant difference among the tested rice cultivation methods. The water seeding with iron-coated seeds resulted in the highest spikelet number per m² and the heaviest grain weight of brown rice. Percentage of ripened kernel was the highest in wet hill-seeding with iron-coated seeds. But there were not significant among the tested rice cultivation methods. The milled rice yield in direct seeding methods was 3~21% higher than that in machine transplanting. Water seeding with iron-coated seeds recorded the highest milled rice yield being with 6.86t/ha.The occurrence of sheath blight was high according to machine transplanting>wet hill-seeding>water seeding. Weed occurrence was the highest in water seeding with pregerminated seeds. Weedy rice occurred not in machine transplanting but occured 0.6~0.7% in direct seeding methods with pregerminated seeds and 0.1% in direct seeding with iron-coated seeds.

벼농사 복토직파기 개발 연구

박광호,이재철,윤석철,Park, K.H.,Lee, J.C.,Yun, S.C. 국립한국농수산대학교 교육개발센터 2001 현장농업연구지 = Journal of practical agricultural resear Vol.3 No.1

This research was performed to develope a stable direct seeding method in rice cultivation using by a direct seeder with soil application. A principle of this methodology was introduced from seeding nursery system of machine transplanting enable to increase high seeding establishment direct seeding method with soil application was high of 89-95% while that of water seeding was 68%. During seeding growth plant height was ralatively small but seeding health was high. A total soil consumption of this methodology was 145kg/10a in dirll seeding and 26kg/10a in hill seeding respectively, there was 100% erected in direct seeding with soil application while water seeding was 45% in erected seeding stand. In direct seeding method with soil application total carbohydrate content was higher than that of water seeding. This machine was manufactured to attach and/or detach to a machine transplanter with riding type and machine cultivator with multipurpose. In the farmer's demonstrated rice field this method was well performed like machine transplanting in terms of rice growth and development. There was highly cost reduction for rice production like other direct seeding methods.

사료작물 후작 벼 직파 방법별 생육 및 수량 비교

박광호,박성태,Park, K.H.,Park, S.T. 국립한국농수산대학교 교육개발센터 2019 현장농업연구지 = Journal of practical agricultural resear Vol.21 No.1

The field trial was performed to evaluate the rice growth and yield in different direct seeding methods after Italian Ryegrass Harvest The required time for seed emergence was for 7 ~ 8days in the tested direct seeding methods and there was high in seedling establishment in order of wet hill-seeding with iron-coated seeds > water seeding with iron-coated seeds > wet hill-seeding with soil coverage with pregerminated seeds. The rice plant height was shorter in the tested direct seeding methods than that of machine transplanting until 45day after seeding but there was not significant difference in terms of statistical analysis at 63day after seeding. The growth of tiller number in the rice plant was high in water seeding with iron-coated seeds and wet hill-seeding with soil coverage and low in wet hill-seeding with iron-coated seeds compared to machine transplanting. The yield component in the tested direct seeding methods was not significant difference in terms of statistical analysis. The milled rice yield in the tested direct seeding methods was higher 2 ~ 8% being with 4.94 ~ 5.24t/ha than that of machine transplanting but there was not significant difference in terms of statistical analysis. The percentage of head rice was low in the tested direct seeding methods compared to machine transplanting. The weedy rice was not occurred in the tested rice cultivation methods. In conclusion the direct seeding method would be recommended to be a suitable to in following by Italian ryegrass harvesting in southern area of Korea in terms of reduction in production cost and high income basis for rice growing farmers.

Farm-level Assessment of Rice Direct-Seeding Practices in Chonbuk Province

Dong Kyun Suh,Song Joong yun,Jung Keun Park 韓國作物學會 2000 Korean journal of crop science Vol.45 No.5

The technology of direct-seeding in rice cultivation is an innovation mainly induced by factors in market economy and is rapidly diffused among individual farmhouses. Because the effect of technology can be affected by many factors under various farming circumstances, the impact and stability of the direct-seeding technology compared with transplanting was analyzed under various topographical regions. Yield in direct-seeding was higher in plains, although the farm size producing higher yield was quite different depending on the topographical regions. In the direct-seeding cultivation of rice, man-labor hours was reduced by about 38 percent and the reduction rate showed little difference among topographical regions. Fertilizer was used about 11 percent more but the increase rate varied from 3 to 17 percent depending on regions with higher rates in plains. Application of agricultural chemicals was also increased about 9 percent in direct-seeding, but the increase rate was as high as 12 percent in suburbs. More fertilizer and agricultural chemicals were used in direct-seeding cultivation by farmhouses implementing both direct-seeding and transplanting than by those implementing direct-seeding only. Use of more fertilizers and agricultural chemicals in direct-seeding in all regions may indicate its technical instability. Major problems causing the technical instability of direct-seeding cultivation should be solved by comprehensive research considering various farming circumstances such as topographical features rather than just a top-down style research and extension.

수도 직파재배의 경제성 분석

김병택 경상대학교 농업생명과학연구원 2003 농업생명과학연구 Vol.37 No.3

국내산 쌀의 생산비를 감축시키기 위한 대안으로서 수도 직파재배기술을 개발하여 농가에 보급했다. 초기에는 직파재배면적이 증가했으나 근년에 와서 감소했으며 이 연구에서는 기술적 내지 경제적 측면에서 직파재배 면적의 감소요인을 규명했다. 직파재배는 이앙재배에 비해 노동력이 절감되고 생산비감축을 가져왔고 수량감소가 수반되지만 단위 면적당 수익성은 직파재배 쪽이 높은 것으로 나타났다. 그러나 수도작 농가 입장에서 보면 절감되는 가족노동력의 기회비용이 아주 낮고 이앙기를 이미 보유하고 있으므로 감축되는 이앙기의 고정비는 직파재배로 전환해도 부담해야 한다. 그러므로 쌀 소득극대화를 추구하는 가족농이라면 직파재배보다 이앙재배가 더 유리하다는 사실이 밝혀졌다. 직파재배 감소요인을 이것으로 설명할 수 있으며 기술이 보완되지 않는 한 직파 재배면적은 확대되기 어려울 것으로 판단된다. The Korean Government has provided farms with the direct seeding technology as an alternative for reducing rice production costs. Nowdays, the acreage for rice planted by the direct seeding has decreased, although being increased at the first time of introduction of the techonolgy. This paper is to examine the reason why the rice acreage by the direct seeding decreased. It is true that the direct seeding caused labor costs per acreage to reduce and and thus result in more profits per acreage compared with the old seeding. However, because the opportunity cost of family labor which reduced from the direct seeding is low, the farmers should still bear to fixed costs for the seeding machines, although they switched the old seeding to the direct seeding for paddy rices. Because of these facts, the old seeding appeared to be more profitable to family farms than the direct seeding. Therefore, the rice planted area by the direct seeding is not expected to increase as long as the seeding technology would be not improved

벼 직파 유형별 생육 및 수량 비교 연구

박광호,박성태,Park, K.H.,Park, S.T. 국립한국농수산대학교 교육개발센터 2017 현장농업연구지 = Journal of practical agricultural resear Vol.19 No.1

The field trial was performed to evaluate the rice growth and yield in different direct seeding methods. The required time for seed emergence was for 8~ 9days in the tested direct seeding methods and there was high in seedling establishment according to wet hill-seeding with iron-coated seeds> wet hill-seeding with soil coverage>water seeding with iron-coated seeds and water seeding with pregerminated seeds as the conventional treatment. The rice plant height was taller in wet hill-seeding methods than that of water seeding with broadcasting method but there was not significant difference in terms of statistical analysis at 75day after seeding except the water seeding with pregerminated seeds. The growth of tiller number in the rice plant was highest in water seeding with iron-coated seeds. The milled rice yield was highest in water seeding with iron-coated seed being with 6.4t/ha and percentage of head rice was the highest in wet hill-seeding and water seeding with iron-coated seeds.

벼 직파재배 유형에 따른 생육 및 수량

崔元永,金尙洙,申鉉卓,趙守衍,崔善英 韓國作物學會 1997 한국작물학회지 Vol.42 No.1

본 시험은 직파재배 유형에 따른 생육 및 수량을 밝히고자 동벼와 농안벼를 공시하여 수행하였던 바 그 결과를 요약하면 다음과 같다. 1. 직파재배 유형간 입수수는 건답평면세조파에서 가장 많았고 무논골뿌림재배에서 적었다. 2. 초기의 경수 증가 속도는 어린모 기계이앙재배가 빨랐으며 유교경비율은 직파재배가 이앙재배보다 낮았다. 3. 출수일수는 직파재배가 어린모 기계이앙재배보다 동진벼는 2∼13일, 농안벼는 10∼18일 길었다. 4. 뿌리의 표층 분포 비율은 담수표면산파>담수표면조파>무논골뿌림>건답평면세 조파>어린모 기계이앙재배 순으로 높았다. 5. 제4절간의 굵기는 재배유형간에 차이가 없었으며 제4절간의 간벽두께는 어린모 기계 이앙재배가 직파재배보다 두꺼웠고 줄기 매몰깊이는 어린모 기계이앙>건답평면세 조파>무논골뿌림>담수표면 조파>담수표면산파 순으로 깊었다. 6. 중심고는 직파재배가 어린모 기계이앙재배보다 높았고 모멘트는 어린모 기계이앙재배가 낮았으며 도복지수는 어린모 기계이앙재배가 가장 낮았고 무논골뿌림, 건답평면세 조파, 담수표면조파, 담수표면산파 순으로 낮았다. 7. 도복은 농안벼에서는 발생하지 않았거나 매우 경미하였으나 동진벼는 담수표면직파>담수표면조파>무논골뿌림>건답직파=어린모 기계이앙의 순으로 도복발생이 심하였다. 8. 수량 구성요소와 수량성은 품종간에는 유의적인 차이가 인정되었으나, 어린모 기계이앙 재배와 직파재배, 그리고 직파재배와 유형간에는 유의적인 차이가 없었다. This experiment was conducted to identify the growth and yield differences in rice cultural types: Broadcasting on flooded paddy surface(BF), drilling on flooded paddy surface(DF), puddled-soil drill seeding(PD), drill seeding on dried paddy flat(DD), and machine transplanting of lO-day old seedling(MT) at National Honam Agricultural Experiment Station in 1995. Among the cultural types of direct seeding, the number of seedling stand showed high in order of DD>BF>DF>PD. Tillering at early growth stage was faster in MT and effective tiller showed higher in MT than in direct seeding. Growth duration from seeding to heading was longer in direct seeding than in MT for 2-13 days of Dongjinbyeo and 10-18 days of Nonganbyeo. Root distribution ratio at the surface soil revealed high in order of BF>DF>PD>DD and MT. Culm wall thickness of 4th internode was thicker in machine transplanting of 10-day old seedling than in direct seeding, and the depth of buried culm showed deep by turns of MT> DD>PD>DF and BF. The height of center gravity and moment related to lodging revealed higher in direct seeding than machine transplanting that resulted high lodging index by turns of BF>DF>DD> PD among the direct seeding cultural type. Lodging was occured seriously in the order of BF>DF>PD>DD =MT in Dongjinbyeo but wasn't significantly different in Nonganbyeo among the cultural type. The yield components and grain yield showed varietal differences but was not significantly different between in MT and in direct seeding, and among cultural types of direct seeding.

직파재배시 파종량이 총체 벼의 수량 및 사료가치에 미치는 영향

김종근,박형수,김지혜,고한종,Kim, Jong Geun,Park, Hyung Soo,Kim, Ji Hea,Ko, Han Jong 한국초지조사료학회 2014 한국초지조사료학회지 Vol.34 No.4

본 시험은 사료용 총체 벼 직파 재배시 파종량이 수량 및 사료가치에 미치는 영향을 구명하기 위해 2007년부터 2008년까지 국립축산과학원에서 수행되었다. 총체 벼는 국립식량과학원에서 육종한 녹양벼를 이용하여 4개의 파종량을 두고(30, 60, 90 및 120 kg/ha) 수행하였다. 출현일, 출수기, 녹색도 및 내병성은 파종량에 따른 차이는 나타나지 않았다. 초장은 파종량이 늘어남에 따라 커졌으며(p<0.05) 분얼수는 줄어들었다. 건물함량은 유의적인 차이를 나타내지 않았으나 생초 및 건물수량은 파종량이 증가함에 따라 유의적으로 증가되었다(p<0.05). 조단백질 함량은 파종량이 늘어남에 따라 감소되었으며 ADF 함량은 파종량이 늘어남에 따라 높아졌고 NDF 함량은 일정한 경향이 없었다. TDN 함량은 120 kg/ha 처리구에서 가장 낮았고, 잎-줄기-정조 비율은 파종량이 늘어남에 따라 정조비율은 줄어들었으며 잎의 비율은 약간 높아졌고 줄기는 큰 차이가 없었다. 경제성 분석결과 60 kg/ha 파종구에서 가장 높은 소득 증가가 있는 것으로 나타났다. 따라서 이상의 결과를 종합하여 볼 때 총체 벼 직파재배를 위한 적정 파종량은 60kg/ha 내외가 적당한 것으로 추천된다. This experiment was conducted to evaluate the effect of seeding rates on the forage quality and productivity of direct-seeded whole crop rice at the experimental field of the Grassland and Forages Division, National Institute of Animal Science, RDA from 2007 to 2008. Whole crop rice variety, "Nokyang", developed by the National Institute of Crop Science, was directly seeded with four different seeding rates (30, 60, 90 and 120 kg/ha). There were no significant differences (p<0.05) found in emergence date, heading date, greenish and disease resistance based on the seeding rates. Plant height increased at higher seeding rates but the tiller number per plant decreased (p<0.05). The dry matter (DM) content showed no significant difference based on seeding rates (p<0.05) while the yield of fresh and dry matter increased with incremented seeding rates (p<0.05). Acid detergent fiber (ADF) content increased with higher seeding rates, but the neutral detergent fiber (NDF) content did not show a similar tendency. The total digestible nutrient (TDN) content was lowest with 120 kg/ha seeding rate. The grain ratio decreased at higher seeding rates. In economic analysis, the plot seeded at a rate of 60 kg/ha showed the highest income increment. Although high seeding rates increased the DM yield, a seeding rate of 60 kg/ha is recommended as the proper seeding rate for direct-seeded whole crop rice.

보리후작 벼 부분경운직파의 생육특성 및 수량

김상열,박성태,신상욱,이명철 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.4

보리후작 벼 부분경운직파기의 포장성능 평가와 벼 생육 및 수량영향을 조사하기 위해 실시한 연구결과는 다음과 같다. 1.부분경운직파 시작기의 파종시 종자 떨어짐 및 복토상태는 양호하나 배수골 넓이 및 깊이가 각각 17㎝, 10㎝로 좁고 배수골 양쪽벽이 무너져 배수골 안에 흙이 쌓이는 경향이었다. 2. 출아일수는 부분경운직파는 12일로 요철골직파보다 2일 늦었고, 입모수 및 파종 25일후 초장 변이계수는 부분경운직파가 요철골직파보다 큰 경향이었다. 3. 출수기는 부분경운직파는 8월 26일로 요철골직파보다 3일 늦었으나, ㎡당 수수, 수량구성요소 및 10a당 쌀수량은 요철골직파 및 부분경운직파에서 비슷하였다. 4.부분경운직파는 요철골직파에 비해 줄기매몰심이 깊고 도복지수가 낮아 요철골직파보다 도복이 적었다. Performance of minimum-tillage direct seeder and effect of the minimum-tillage direct seeding method on growth and yield of rice under barley-rice double cropping system was investigated. Seeding status of the minimum-tillage direct seeder was acceptable except for narrow irrigation canal formation and demolish of the seeding row in the barley straw added plot. In the minimum-tillage direct seeding, rice seedling emerged at 13 days after seed sowing, 2 days late compared with the corrugated dry furrow seeding method. The high variation in the seedling stand and seedling height at 25 days after seeding was occurred in the minimum-tillage direct seeding as compared with that of the corrugated dry furrow seeding. However, occurrence of the field lodging in the minimum-tillage direct seeding was lower than the corrugated dry furrow seeding method due to deep culm burial depth. Based on the milled rice yield, the two direct seeding methods showed similar with 432 ㎏ per 10a.

嶺南地域 乾畓直播裁培適應 벼 品種選定

Byung Tae Jun(田炳泰),Sae Jun Yang(楊世準),Un Sang Yeo(呂運尙),Kee Yeong Lee(李基榮),Soo Kwan Lee(李壽寬) 한국육종학회 1993 한국육종학회지 Vol.25 No.4

This experiment was conducted to screen the adaptability of Korean rice cultivars to direct seeding on dry soil at Yeongnam Crop Experiment Station in 1992. Twelve rice cultivars, two of early maturity. four of medium maturity and six of medium-late maturity, were seeded from May 1 to June 20 with ten-day interval. Based on the minimum cumulative temperature for ripening, 760℃ for forty days after rice heading, the critical late seeding date were June 20 for early maturity varieties, June 10 for medium maturity ones, and May 30 for medium-late maturity ones. Especially, the critical late seeding date for Tamjiribyeo, a medium-late maturity rice cultivar, was May 20. Changes in agronomic characters by direct seeding as compared with transplanting should be checked on the basis of seeding date rather than transplanting date. There are no problems in germinability at fifteen days after seeding except Sangjubyeo, Hwaseongbyeo, although varietal difference of low temperature(15℃) germinability was clearly recognized at ten days after seeding. Degree of seedling emergence(1~9) at twenty days after May 1 seeding under the field condition was good in Dongjinbyeo, Yeongnambyeo, Tamjinbyeo, and Donghaebyeo, but it was relatively fair in Jinmibyeo, Hwaseongbyeo, and Ilpumbyeo. Seedling vigor at thirty five days after May 1 seeding also was very vigorous in Dongjinbyeo, but it was normal in Ilpumbyeo. Incidence degree of lodging in the field was more severe in direct seeding than in transplanting. Donghaebyyeo, Yeongnambyeo and Ilpumbyeo were evaluated as lodging tolerant cultivars. Significant negative correlation coefficient between field lodging and breaking strength was recognized regardless of cultivation method. Milled rice yield by direct seeding was nearly 94.8% level of that by transplanting at the same seeding time of May 10. The critical late seeding time of direct-seeded cultivation based on heading date can be explained by the relationship between the seeding time and grain yield. Donghaebyeo, Yeongnambyeo, Ilpumbyeo, Dongjinbyeo, and Tamjinbyeo were recognized as considerably adaptable rice cultivars to direct-seeded cultivation in southeastern plain area by the lodging tolerance and relative level of grain yield compared with transplanting.