- 期刊
- OpenAccess
桃園區水旱田輪作制度對土壤肥力及作物產量之影響
Effect of Rice-Upland Crop Rotation on the Soil Fertility and Yield in Taoyuan District
摘要
本研究自1994年至2000年，於桃園縣新屋鄉桃園區農業改場試驗田進行，試驗田土壤為桃園紅壤。主要在探究水旱田輪作制度對土壤理化性質及土壤肥力之影響。結果顯示，二期作休耕期間輪換不同作物之土壤管理方式對一期水稻之產量略具影響，年平均產量以種植牧草處理4.59 t/ha最高，增產4.0%，其次為種植綠肥作物處理4.55 t/ha增產3.0%，餘休閑期間翻耕一次及灌溉或自然蓄水之處理則與休閑區（對照）無顯著差異。對土壤理化性之影響而言，有機碳含量以全年休耕、種植綠肥作物及牧草之處理較高，有效性鉀含量全年休耕區明顯較各處理為低，且有逐年下降之趨勢，主要因鉀無供源，且易溶於水而流失，其他之土壤理化性及土壤肥力各處理間均無顯著差異。
並列摘要
From 1994 to 2000 field experiments were conducted to study the effect of rice-upland crop rotation systems on the soil properties, soil fertility and yield of rice, on Taoyuan Latosol at the Taoyuan District Agricultural Improvement station, Hsinwu, Taoyuan. Grain yields of the first crop were affected by different soil management schemes, the highest yield of 4.59 t/ha was obtained from rice after alternating with pangola grass, averaging 3-4 % increase over the check, next was 4.55 t/ha obtained from rice-green manure treatment. No difference was noted between the one-tillage and flooding treatments during the fallowing season. The organic carbon content of soil was increased due to planting pangola grass, green manure and year-round fallow. The available K was significantly consistently reduced yearly by year-round fallowing, because of no application and loss of potassium.