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为摸清雁山区土壤基础养分(氮磷钾)含量,探索马蹄的氮磷钾肥的最佳施肥配方,2009年在雁山区进行了马蹄“3414”肥料效应田间试验。结果表明,该试验点土壤的氮含量为低水平,磷、钾含量为中等水平。根据肥料交互作用分析结果,氮、磷、钾的交互作用最高,其次是氮钾的交互作用,最差的是磷钾的交互作用。根据各处理施肥量和马蹄产量,建立了三元二次及一元二次肥料效应模型,根据肥料和马蹄的价格,计算出马蹄最高产量的施肥量和最佳经济效益的施肥量。通过比较,在本试验条件下,选择三元二次肥效模型的最佳产量施肥量作为推荐施肥量,即:N386.02kg/hm2、P2O5146.69kg/hm2、K2O 395.55kg/hm2。
In order to find out the contents of soil basic nutrients (NPK) in Yanshan Mountain and explore the best fertilization formula of N, P and K fertilizer in the wild horseshoe, a field experiment was conducted in Yushan District in 2009 with the fertilizer effect of “Horseshoe” “3414”. The results showed that the soil nitrogen content was low and P and K levels were medium. According to the result of fertilizer interaction analysis, nitrogen, phosphorus and potassium had the highest interaction, followed by nitrogen and potassium, and the worst one was phosphorus and potassium. According to the fertilization rate and horseshoe yield, the three-quadratic and one-yuan secondary fertilizer effect models were established. According to the price of fertilizer and horseshoe, the fertilizer amount and the economic benefit of the highest yield of horseshoe were calculated. By comparison, under the conditions of this experiment, the best yield of three-way secondary fertilization model was selected as the recommended amount of fertilizer, namely: N386.02kg / hm2, P2O5146.69kg / hm2, K2O 395.55kg / hm2.