钙镁对甜瓜椰糠半基质栽培的影响

为了探索椰糠半基质条件下，钙镁肥对甜瓜产量、品质的影响，确定钙镁肥施用的必要性，配制不同钙镁含量的肥料进行比较。结果显示，不同钙镁含量的肥料与不含钙镁的肥料相比，产量、品质没有差异。在土壤水溶性钙1197.1mg?kg-1，水溶性镁690.8 mg?kg-1，灌溉水钙含量68.0 mg?kg-1，镁含量22.7 mg?kg-1的条件下，能为甜瓜椰糠半基质栽培提供足够的钙镁营养。这对简化施肥设施，减轻投入成本，加速该模式在中小企业及个体种植户中推广有较大的现实意义。

Study on the Effect of Calcium and Magnesium Fertilizer on Melon Growth under Coconut-coir Half-substrate Cultivation

To evaluate the effect of calcium and magnesium fertilizer on melon yield and quality under coconut-coir half-substrate cultivation, and determine the necessity of calcium and magnesium fertilizer utilization, different contents of calcium and magnesium fertilizers were prepared and utilized in this study. The results indicated that there were no evident differences between yield and quality under containing or without calcium and magnesium fertilizers. The composition of soil with 1197.1 mg?kg-1 of water-soluble calcium and 690.8 mg?kg-1 of water-soluble magnesium, and irrigation water including 68.0 mg?kg-1 of calcium and 22.7 mg?kg-1 of magnesium will supply enough calcium and magnesium nutrients for melon growth under coconut-coir half-substrate cultivation. This pattern has practical significance of promotion on middle and small-sized enterprises including individual household, based on the advantages of fertilizer facilities simplification and input cost reduction.