한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)
- 제44권1호
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- Pages.1-3
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- 1999
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
Growth of Rice Plant and Chemical Properties of Soil as Affected by Nitrogen Fertilization Level in Milk Vetch(Astragalus sinicus L.) Cultivation in Paddy Field
- Lee, Yeen (Chonnam Agricultural Research and Etension Services) ;
- Shin, Hae-Ryong (Chonnam Agricultural Research and Etension Services) ;
- Kim, Suk-Wean (Chonnam Agricultural Research and Etension Services) ;
- Kwon, Oh-Do (Chonnam Agricultural Research and Etension Services) ;
- Park, Heung-Gyu (Chonnam Agricultural Research and Etension Services) ;
- Kim, Yong-Jae (College Agriculture, Chonnam National Univrsity)
- 발행 : 1999.03.01
초록
This study was carried out to determine the effects on rice growth, yields and soil improvement under the different nitrogen levels in machine-transplanted rice after plowing at the fruiting stage of milk vetch. The fresh weight of milk vetch at plowing time was 20.95 ton/ha. In dry weight, T-N and C/N were 1.58%, 21.8%, respectively. Organic matter, total nitrogen and exchangeable calcium of soil after the experiment in the plot of milk vetch were higher than those before the experiment. Leaf area and dry weight of rice plants at heading date increased as nitrogen level increased. The number of panicle and spikelets per