• ISSN 1008-505X
  • CN 11-3996/S
郭熙盛, 吴礼树, 朱宏斌, 王文军, 叶舒娅, 武际. 不同钾肥品种和用量对花椰菜产量和品质的影响[J]. 植物营养与肥料学报, 2007, 13(3): 464-470. DOI: 10.11674/zwyf.2007.0318
引用本文: 郭熙盛, 吴礼树, 朱宏斌, 王文军, 叶舒娅, 武际. 不同钾肥品种和用量对花椰菜产量和品质的影响[J]. 植物营养与肥料学报, 2007, 13(3): 464-470. DOI: 10.11674/zwyf.2007.0318
GUO Xi-sheng, WU Li-shu, ZHU Hong-bin, WANG Wen-jun, YE Shu-ya, WU Ji. Effects of different types and rates of potassium fertilizer on yield and quality of cauliflower[J]. Journal of Plant Nutrition and Fertilizers, 2007, 13(3): 464-470. DOI: 10.11674/zwyf.2007.0318
Citation: GUO Xi-sheng, WU Li-shu, ZHU Hong-bin, WANG Wen-jun, YE Shu-ya, WU Ji. Effects of different types and rates of potassium fertilizer on yield and quality of cauliflower[J]. Journal of Plant Nutrition and Fertilizers, 2007, 13(3): 464-470. DOI: 10.11674/zwyf.2007.0318

不同钾肥品种和用量对花椰菜产量和品质的影响

Effects of different types and rates of potassium fertilizer on yield and quality of cauliflower

  • 摘要: 在不同肥力水平的土壤上,采用田间试验方法,研究了不同钾肥用量水平下硫酸钾和氯化钾对花椰菜产量和品质的影响。试验结果表明,钾肥可提高花椰菜花球产量,施钾增产效应达显著水平;但单位钾素(K2O)养分生产效率随钾肥用量提高而降低。氯化钾的产量效应低于硫酸钾,其效应受土壤氯离子含量和钾肥用量的影响。钾肥可提高花椰菜维生素C含量,用量过高则含量下降;增加和降低效果与土壤含钾量有良好的相关性。中、高用量硫酸钾效果优于氯化钾。钾肥可降低氨基酸总量和各种类氨基酸含量,氯化钾处理花椰菜氨基酸含量高于硫酸钾,特别是谷氨酸和丙氨酸含量。钾肥可促进花椰菜养分吸收,氯化钾更有利于钾素的吸收和积累,氮、钙和镁的转运,而不利于钾素从花轴转运到花蕾。不同钾肥品种的产量品质差异与钾肥陪伴氯离子与土壤氯离子含量关系密切。在土壤氯离子含量高的土壤上,硫酸钾可作为理想的钾肥肥源。

     

    Abstract: In order to develop rational potassium(K) fertilization and increase K use efficiency,field experiments were conducted on soils with different fertility levels to study the effects of different rate of potassium sulfate and potassium chloride on cauliflower yield and quality.The results showed that K fertilization increased cauliflower yield significantly as compared with control.Cauliflower yield was less responsive to potassium chloride than to potassium sulfate,which was influenced by soil Cl content and K rates.The K nutrient use efficiency(NEU) decreased with K rates.Potassium sulfate had higher NEU than potassium chloride.Applying K fertilizers increased Vc content of cauliflowers,but high K rate could have negative effect on Vc content.The actual effects of K fertilization on Vc were affected by soil K levels.Significant differences were detected between different types of K fertilizers,with potassium sulfate having better effects on Vc than potassium chloride at medium and high fertilization rates.K fertilization decreased total amino acid(AA) content,although AA content of cauliflower treated with potassium chloride was higher than that treated with potassium sulfate,especially glutamic acid and alanine.K increased nutrient uptake of cauliflower,with potassium chloride being favorable to the uptake of K,translocation of N,Ca and Mg while hindering the translocation of K from stalks to florets of cauliflower.The differences of yield and quality between types of K fertilizer were highly related to the companying Cl of K fertilizer and soil Cl content.In soils with high Cl,potassium sulfate was better for cauliflower.

     

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