|Title:||土壤肥力診斷在水稻精準施肥管理之應用||Other Titles:||Application and Diagnosis Technique of Soil Fertility in Precision Fertilization of Rice||Authors:||王鐘和
|Keywords:||水稻;土壌肥力診斷;精準施肥;Rice;Soil fertility diagnosis;Precision fertilization||Issue Date:||Dec-2009||Publisher:||中華土壤肥料學會||Journal Volume:||12||Journal Issue:||1-2||Start page/Pages:||33-40||Source:||土壤與環境||Abstract:||
本硏究依據現行水田土壤磷、鉀肥力診斷推薦施肥墓準，設置氮、磷、鉀肥不同用量處理，並設置氮肥高量及磷鉀肥足量施用之農家慣用置區爲對照，探討不同肥料用量處理水稻各生育時期、階段之 乾物累積及要素吸收量之變化及產量之差異。結果顯示：應用現行水田土壤磷鉀肥力診斷基準，推薦磷鉀肥用量之各處理 間植株乾物重、產量及磷鉀吸收量均無顯著差異，顯示該基準具實用性。稻穀產量 與幼穂形成期植株氮含量間呈極顯著正相關。而本試驗水稻生育期間之氣候條件有利於水稻生長及乾物生產，因生長量增加 故對營養元素的需求也增加，故多施氮肥 具明顯增產效果。
The effect of different rate of N, P and K fertilizers on the growth of rice plant at different stages were studied. The conventional farms' rate was used as check and P and K application rates were according to the current paddy soil diagnosis standard. The result indicated the total dry matter yield of rice plant, grain yield and P and K uptake were no significantly different among all the treatment. Grain yield was significantly positive correlated with N content of rice plant at panicle initiation stage. Owing to the climate condition during this experiment being favorable to the rice plant growth, higher nutrient demand was observed for the higher dry matter production. Thus, the yield of high N supplied treatment (CK) were higher than others treatment.
|Appears in Collections:||農業化學組|
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