氮、磷及鉀肥對千寶菜生育、養分含量及產量之影響研究

Effects of N, P, and K Fertilizers on Growth, Nutrient Contents, and Yield of Senposai

蔡宜峰(Yi-Fong Tsai) ； 戴振洋(Chen-Yang Tai) ； 郭俊毅(Chun-Yi Kuo)

《臺中區農業改良場研究彙報》 80期 (2003/09) Pp. 13-23

https://doi.org/10.6956/BTDAIS.200309.0013

摘要

本研究目的在探討利用氮、磷、鉀等不同種類化學肥料，對千寶菜生育及產量之影響，以期建立適宜且合理的化學肥料使用技術。試區土壤屬於粘板岩沖積土，試驗處理包括氮肥、磷肥及鉀肥等三種化學肥料試驗，其中氮肥試驗包括0、60、120及180 kg/ha等四級處理，磷及鉀肥試驗處理包括0、60及120 kg/ha等三級處理，各試驗處理另使用4 t/ha有機質肥料做為基肥，分別連續進行兩期作試驗。由試驗結果顯示，千寶菜產量在不同氮、磷、鉀肥料用量處理間的差異不顯著，千寶菜地上部植株氮、磷、鉀含量分別隨著氮、磷、鉀肥料用量之增加而增加。由不同氮、磷、鉀肥料用量分別與千寶菜產量指數之相關分析顯示，兩者之間有顯著的二次曲線迴歸相關，由此可推算氮、磷、鉀三種不同肥料的經濟合理用量，分別為100 kg N/ha、60 kg P2O5 /ha、80 kg K2O /ha。

關鍵字

千寶菜 ； 氮肥 ； 磷肥 ； 鉀肥

並列摘要

The aim of this research is to evaluate the effect of N, P, and K fertilizers on growth, nutrient contents, and yield of senposai. Two-season field experiments were conducted at slate alluvial soil with different application rates of N, P, and K fertilizers. N fertilizer experiment has four treatments including 0, 60, 120, and 180 kg N/ha. There were both three treatments (0, 60, and 120 kg P2O5 or K2O /ha) in P and K fertilizer experiments. Organic fertilizer with 4 t/ha was used as the base fertilizer in all treatments. The results indicated that the yield of senposai have no significant difference among treatments in N, P, and K fertilizer experiments. The N, P, K contents of the shoot of senposai were increased by the increasing of the application rate of N, P, and K fertilizers in those experiments, respectively. By multiple regression analysis, the relations between the yield index of senposai and the application rates of N, P, and K fertilizer were statistically significant. Therefore, the application rates with 100 (N), 60 (P2O5), and 80 (K2O) kg/ha were suitable for senposai.

並列關鍵字

senposai ； N fertilizer ； P fertilizer ； K fertilizer