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育苗箱播種量對水稻產量與米質的影響

摘要


為改普育苗中心每箱育苗箱播種量高達乾穀300公克的成本負担與種植後的栽培管理(例如施肥及病蟲害防治)的負面影響,98年起本場進行育苗箱播種量對水稻產量與米質的影響研究,以台稉9號、臺中194號及臺中秈10號為參試品種,田間設計採用裂區設計,品種為主區,育苗箱播種量為副區。育苗箱播種量處理分為每育苗箱濕穀180、210、240、270、300公克等5個處理。99年的結果顯示:播種量對產量影響不大,即使100年第一期作增加重肥試區,在產量上仍無差異;若以產量構成要素加以分析,播種量對稔實率與千粒重有顯著的影響,但對穗數、一穗粒數與產量並無顯著影響。調查插秧後的稻株表現,發現太低的播種量插秧後有較高的死株率與缺株率。品種間對播種量的反應略有不同,但米質卻以播種量較少的處理較佳,因此考量成本與米質的因素,播種量以每箱240-270公克較佳。

關鍵字

水稻 栽培技術 良質米 產量 播種量

並列摘要


For the purpose of seeking the proper rice seedling density in the seedling plate, Taikeng 9 , Taichung 194 and Taichung sen 10 would be used in this study. The trial is proceeded by a split plot design with three relpications. Each seedling tray used different sowing rate in 150 g, 200 g, 250 g, 300 g respectively, The surveyed data will be included the agronomic characteristics, yield components and rice quality. The result showed that the sowing rate on grain yield ,spikelet per panicle and panicle number of rice had no significant , but had significant on fertility and 1000-grain weight. The result suggested the 240-270 g sowing rate had the great grain yield and quality, were the best choice in order to reduce the rice production cost.

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