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【目的】研究叶面施肥对热带设施甜瓜产量及品质影响,探讨甜瓜有机水溶肥叶面施肥的应用效果,为热带设施甜瓜叶面肥的推广提供理论与实践依据。【方法】设计肥料浓度4种水平组合,以清水为对照,研究有机水溶肥料不同浓度对热带设施栽培甜瓜生长发育、产量和品质的影响。【结果】喷施有机水溶肥料的处理各次观测的叶片面积较对照高16.56%、18.36%和7.38%。叶片SPAD值平均较对照分别提高了13.75%、14.98%和13.70%。甜瓜纵横径增加,纵径分别提高6.75%、14.53%、15.88%和16.65%,横径分别提高3.28%、7.12%、9.33%和9.47%。随着用量的增加,产量也呈增加趋势,增产比例分别为9.01%、26.44%、28.50%、31.02%。【结论】不同浓度水溶肥料叶面喷施对热带设施甜瓜产量和品质有明显影响,采用伸蔓期200 ml/(667 m2·次),其它时期250 ml/(667 m2·次)的喷施方法可显著提高产量,提升品质。
【Objective】 The objective of this study was to investigate the effects of foliar fertilization on the yield and quality of melon in tropical facilities and to discuss the application effects of foliar fertilization on melon organic melon so as to provide theory and practice basis for popularization of melon foliage fertilizer in tropical facilities. 【Method】 Four combinations of fertilizer concentrations were designed. The effects of organic water-soluble fertilizers on the growth, yield and quality of melon cultivated in tropical facilities were studied using fresh water as control. 【Result】 The results showed that the area of foliage sprayed with organic water-soluble fertilizer was 16.56%, 18.36% and 7.38% higher than that of the control. Compared with the control, SPAD value of leaves increased by 13.75%, 14.98% and 13.70% respectively. The longitudinal and transverse diameters of melon increased by 6.75%, 14.53%, 15.88% and 16.65%, respectively, and the transverse diameters increased by 3.28%, 7.12%, 9.33% and 9.47% respectively. With the increase of the amount, the yield also showed an increasing trend, the proportion of increasing yield was 9.01%, 26.44%, 28.50% and 31.02% respectively. 【Conclusion】 Foliar application of water-soluble fertilizers with different concentrations significantly affected the yield and quality of melon in tropical facilities. The spray application of 200 ml / (667 m 2) times of stretching stage and 250 ml / (667 m 2 · times) The method can significantly increase yield and improve quality.