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采用供钾水平较低的赤砂土盆栽试验方法,在施用的硫酸钾镁肥基础上施用不同钾水平,研究钾、镁、硫元素对花生产量、品质及养分累积吸收的影响。结果表明:(1)KMgS配比有利于花生生物产量、提高经济产量,较K1MgS(低钾)配比的花生生物产量增产17.7g盆-1,增幅32.19%;其次为K1MgS,较对照增产12.52g盆-1,增幅22.77%,K2MgS(高钾)处理的花生生物产量较对照增产4.49g盆-1,增幅8.17%;(2)KMgS处理的花生植株含氮、磷、镁量最高,较对照分别增幅26.30%、25.49%、36.27%;(3)花生植株含钾和硫量有随施钾施用量的增加而增加趋势。
A pot experiment was conducted to study the effects of potassium, magnesium and sulfur on the yield, quality and nutrient uptake of peanut by using different levels of potassium on the basis of potassium sulphate and magnesium fertilizer applied. The results showed that: (1) The ratio of KMgS was favorable to peanut biomass and economic yield, and the yield of peanut was increased by 17.7g pot -1, 32.19% higher than that of K1MgS (low potassium); followed by K1MgS, 12.52 g pot-1, increased by 22.77%. The yield of peanut biomass treated with K2MgS increased 4.49g pot-1, an increase of 8.17% compared with the control. (2) The content of nitrogen, phosphorus and magnesium in the peanut plants treated with KMgS was the highest The control increased 26.30%, 25.49% and 36.27% respectively. (3) The content of potassium and sulfur in peanut plants tended to increase with the increase of K application rate.