氮磷钾肥配施对火龙果产量及品质的影响

为火龙果生产上的合理施肥提供科学依据,采用3414试验设计,研究了氮、磷、钾肥配施对火龙果产量及品质的影响。结果表明:不同氮、磷、钾肥的配施水平均可显著提高火龙果的产量,但处理15(常规施肥区)与处理9(3414试验的最高产量)的产量无显著差异;不同施肥处理对火龙果果实的可溶性固形物、总糖、总酸及矿质营养元素的影响程度各不相同,果实中的N、P、K元素含量并不随氮、磷、钾肥用量的增加而提高,可能与火龙果的生长特性和植株对养分的分配需求密切相关。

Effects of Different N,P and K Combination on Yield and Quality of Pitaya

The "3414" test was used to study the effects of N,P and K combination on yield and quality of pitaya to provide the scientific basis for rational application in pitaya production.The results showed that the tested different N,P and K combinations all improved yield of pitaya significantly,but there was no significant difference in yield between Treatment 15(the convention application plot and Treatment 9(the highest yield in the "3414" test).Different N,P and K combination had different effects on soluble solids,total sugar,total acid and mineral elements of pitaya fruit,but the N,P and K content in pitaya fruit didn’t increased with increment of N,P and K application,which may be closely related to growth characteristics and nutrient distribution and demand of pitaya.