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권영립 ( Young Rip Kwon ),권석주 ( Suk Ju Kwon ),문영훈 ( Young Hun Moon ),오남기 ( Nam Ki Oh ),최정식 ( Joung Sik Choi ),이승엽 ( Seung Yeob Lee ) 원광대학교 생명자원과학연구소 2006 생명자원과학연구 Vol.28 No.-
The phosphate and potassium contents increased during the growth stages of rice compared with before fertilizer treatment. Fertilizer application after and before the first rotary during the growth stages showed a low tendency compared with before plowing and surface fertilizer application. The growth index according to growth stages remarkably increased after critical effective tillering stage, and it was low in the other treatments in comparison to fertilization after the first rotary. The contents of chlorophyll and total nitrogen decreased, but the dry weight increased with the growth stage. Total nitrogen content was high at the meiosis stage. The leaf area index was low before the plowing, the first rotary and surface application compared with fertilization application after the first rotary.
벼 생육, 수량과 품질에 대한 돈분액비와 화학비료 시용 효과
권영립 ( Young Rip Kwon ),김주 ( Ju Kim ),안병구 ( Byung Koo Ahn ),이상복 ( Sang Bok Lee ) 한국환경농학회 2010 한국환경농학회지 Vol.29 No.1
We have researched the changes in nutrient content in each phase of fermentation in crops treated with liquefied pig fertilizer, and have determined the best method for applying livestock excrement to cultured crops. In the execution of this experiment, rice was cultivated to full maturity at a paddy field in Jeollabuk-Do Agriculture Research and Extension Services(Jeon-buk series) from 2007 to 2008. The rice plant nitrogen absorption quantity change, according to the growth stages of the cultivated rice, was 20.3% in the rice treated with the liquid pig manure and 22.2% the chemical fertilizer at highest congelation. The chemical fertilizer showed a higher absorption quantity than the liquid manure compost. The nitrogen density at highest congelation was 1.5% in the chemical fertilizer, and 1.8% in the pig manure liquid compost not a significant difference. The stem height at harvest time was 73.8 cm in the crops treated with the liquid pig manure compost. Those treated with the chemical fertilizer, yielded a height of 4.2 cm less than the crops treated with the liquid pig manure compost. The yield was 507 kg/10a in the liquid pig manure compost treated rice, compared with the chemical fertilizer, which showed a value of 1.2% lower. The protein content was 6.3% in the rice treated with the chemical fertilizer, but 6.4% in the rice treated with the liquid pig manure compost. This is not a significant difference. However, the lodging rice plant treated with the chemical fertilizer control showed a protein content of 6.8%, which was even higher than the normal rice. The head rice ratio in the brown rice and the polished rice ended up to be lower in the crop treated with the liquid pig manure than that treated with the chemical fertilizer, Quality, the palatability value, was similar in both groups. The above result indicate that, the effect of liquid pig manure compost corresponds to the effect of chemical fertilizer, when each are scattered uniformly.
질소 시비량이 다른 조건에서 벼 생체엽신 질소함량과 질소영양지수의 변화
권영립 ( Young Rip Kwon ),송영은 ( Yong Eun Song ),최동칠 ( Dong Chil Choi ),백미화 ( Mi Hwa Baek ),권태오 ( Tae Oh Kwon ) 원광대학교 생명자원과학연구소 2006 생명자원과학연구 Vol.28 No.-
To develope the model for measuring the total nitrogen contents in fresh leaf, the change of nitrogen content in fresh leaf was investigated under different nitrogen levels in japonica rice (cv. Nampyeungbyeo). The total nitrogen contents in fresh leaf showed a reduced trend reaching to matured growth stages, but increased after the nitrogen application at panicle stage. The total nitrogen contents were gradually augmented with increment of the planting spacing or the nitrogen levels at transplanting and panicle stage. The total nitrogen contents also showed a significantly year variation according to the nitrogen levels, planting spacing, nitrogen levels at panicle stage. The index of nitrogen nutrition in fresh leaf was increased reaching to matured growth stages, but decreased at panicle and heading stage. This result could be applied for fertilization diagnosis and prescription in the field.