Abstract
This study was conducted to examine the effect of application of pig manure slurry(PMS) for rye cultivation in Paddy-land on rice productivity The field experiments were carried out from 1999 to 2002 on well-grown rice in Paddy-land at Kimje, Chunbuk province in Korea. PMS was manufactured by the fermentation for 6 months in natural condition. Amount of PMS was adjusted equal to total nitrogen value relative to its value of commercial chemical fertilizers. The amount of PMS were spread evenly over the soil surface two times; first in the autumn (before sowing, end of November) and second in the spring(regrowth of rye, middle of March). The field plots were consisted of four kinds (PMS $100\%$ treatment, PMS $200\%$ treatment PMS $100\%$ treatment with half of CF (CF $50\%$), Full of CF treatment (CF $100\%$). The experiment was designed as a randomized complete block. Each treatment was replicated three times. Rices are customarily gown under tropical korean condition as annuals. The results obtained from this study were summarized as fellows. Panicle length of rice was shorter in PMS $100\%$ than other treatments. Ripening grain ratio was the lower in CF treatment. In treatment of PMS $100\%$ and PMS $200\%$, 1000 grain weight was a downward trend as compared to that of full of CF treatments, whereas number of grains per $m^2$ was increased as compared to other treatments. Number of panicles reveals that there is an increase in order; CF $50\% + PMS\;100\%>\;PMS\;100\%\;>\;CF\;100\%\;>\;PMS\;200\%$. Yield of milled rice showed hi인 in CF $100\%$ and $CF 50\%+ PMS 100\%$, but were was no significant difference among treatments. There were did not a regular tendency in the ratio of leaf sheath bright, however the ratio of lodging area was higher in $CF50\%+PMS\;100\%$ treatment than other treatments. Based on the results of this experiment, $CF 50\%+PMS\;100\%$ may be the most effective in rice productivity under application of PMS for rye cultivation in Paddy-land.
본 연구는 돈분액비로 답리작 사료작물을 재배하여 수확한 다음 돈분액비 시용이 후작물인 벼의 생산성에 미치는 영향을 조사하고자 1999년 11월부터 2002년 11월 사이에 수행되었다. 돈분액비와 화학비료는 답리작물인 호밀 파종전과 봄 생육재생기 이전에 시용하였는데, 화학비료 대비 돈분액비의 수준은 N를 기준으로 하였다. 처리는 화학비료 시용구, 돈분액비 $100\%$ 시용구, 돈분액비 $200\%$ 시용구, 화학비료 $50\%$+돈분액비 $100\%$ 시용구로 4처리 완전임의배치 3반복으로 배치하였다. 호밀수확 후작 벼는 농가관행에 준하여 재배되었으며 그 결과는 다음과 같다. 3개년 평균 벼 수량구성요소 및 수량에 있어서 수장은 액비 $100\%$ 시용구가 가장 짧았으며 액비 $200\%$, 화학비료, 화학비료 $50\%$+액비 $100\%$ 시용구 순으로 길었다. 등숙율은 화학비료 시용구가 가장 낮았다. 천립중은 액비 $100\%$ 및 $200\%$ 시용구가 다른 처리에 비해 낮은 경향이었으며, $m^2$당 립수는 반대의 경향이었다. 수수의 연차간 평균치는 화학비료 $50\%$+액비 $100\%$ 시용구가 가장 많았으며 액비 $100\%$, 화학비료, 액비 $200\%$ 시용구 순으로 낮았다. 백미수량은 화학비료 시용구와 화학비료 $50%$+액비 $100\%$ 시용구가 서로 비슷한 수준으로 다른 처리에 비해 높은 경향이었으나, 유의적인 차이는 없었다. 문고병 발생율에는 뚜렷한 경향은 없었으며 도복율은 화학비료 $50\%$+액비 $100\%$ 시용구가 다른 처리구에 비해 도복에 강한 것으로 나타났다. 결과적으로 돈분액비에 의한 답리작으로 호밀을 재배시 그 후작물인 벼의 생산성 측면에서 볼 때 화학비료 $50\%$+액비 $100\%$ 시용이 가장 적절하다고 사료된다.