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수도작에서 왕우렁이 및 오리 방사가 수량구성요소에 미치는 영향
정순재 ( Jeong Soon - Jae ),정원복 ( Chung Won - Bok ),정대수 ( Chung Dae - Soo ),최봉출 ( Choi Bong - Chool ),오주성 ( Oh Ju - Sung ) 한국유기농업학회 2000 韓國有機農業學會誌 Vol.8 No.2
This experiment was carried out to find the effect of different organic farming types, the Duck - pasture plot, the Pond-snail pasture plot and control of the conventional culture plot farming on the yield and its components of paddy rice. The results obtained are summarized as follows. Plant height and Tillering were significantly increase in the Duck - pasture plot. Panicle number per hill, No. of grain per spike and 1,000grain weight were significantly increase in the conventional culture plot. Yield per 10a were 574.13^ at pond-snail pasture plot, 576.81kg at Duck-pasture plot and 579.04kg at conventional culture plot. From these results, it seems that the organic fanning are usefel and pasture of the Duck, Pond-snail for depression of the weed occurrence or increase of yield per 10a is effective as the environmental perservation farming.
왕우렁이(Ampullarius Insulanes) 의 섭식(攝食)ㆍ생태(生態) 및 논잡초 방제(防除) 효과(效果)에 관한 연구(硏究)
정순재 ( Jeong Soon-jae ),박홍식 ( Park Heung-sik ),오주성 ( Oh Ju-sung ),최봉출 ( Choi Bong-chool ),최성관 ( Choi Sung-kwan ) 한국유기농업학회 1999 韓國有機農業學會誌 Vol.7 No.2
This experiment were performed on rice dignity during 1998 at paddy field of Dong-a Univ., Pusan, Korea. Depression effect of weed occurrence by pasture of 2kg of the Ampullarius insularus per 10a was 80.4% at the 7th day after transplanting, 69.7% at the 14th day after transplanting pasture plot and 51.8% at the 21th day after transplanting. Depression effect of weed occurrence by pasture of 5kg of the Ampullarius insularus per 10a was 97.9% at the 7th day after transplanting, 79.2% at the 14th day after transplanting pasture plot and 64.1% at the 21th day after transplanting. Depression effect of weed occurrence by pasture of 8kg of the Ampulbrius insularus per 10a was 97.9% at the 7th day after transplanting, 87.1% at the 14th day after transplanting pasture plot and 71.4% at the 21th day after transplanting. Weeds ingestied by the Ampullarius insularus were in the order of perennial weed, annual weed.