There are two main types of pitaya, the sour types, typically eaten in the Americas, and sweet types found across Asia.

According to the preliminary investigation, planting areas of pitaya in Guizhou province had harmful infection from many pathogenic bacteria, which seriously affected the growth of plants, even led to the death, so gave a great threaten to the production of pitaya.

据初步调查，贵州省种植区火龙果植株已受到多种病原菌的侵染为害，严重影响植株的生长，甚至有些病害会导致植株的死亡，威胁着火龙果的生产。

Still Nanli Lake fish, Xiangou Pho, Dingcheng Zongzi, Longzhou taro, Leiming peanut oil, Nanli Lake mineral water, and Pitaya, cherry tomato all are the featured brand in Ding'an.

还有南丽湖福寿鱼、仙沟粉、定城粽子、龙州香芋头、雷鸣花生油、南丽湖矿泉水，以及火龙果、圣女果等等，都是定安特色品牌。

Research on extraction of flavonoids of pitaya and its antioxidant activity

火龙果中黄酮类物质的提取及抗氧化活性研究

The Pitaya is a type of delicious fruit.

这火龙果那么好吃。

Pitaya as an emerging industry of fruit trees, its large-scale commercial cultivation started a late. Compared to other fruit tree industry, research reports are few.

火龙果作为新兴的果树产业，其商业化和规模化栽培起步较晚，相比其它果树产业，研究报道较少。

Throughout the fruit development period, the potassium content was higher than other nutrient elements content during the whole fruit development was, calcium content was highest in pitaya flesh 3 days after flowering and decreased obviously with the fruit development.

在整个果实发育期间，钾含量比其他营养元素的含量高。火龙果花后3d果肉的钙含量最高，在果实发育中，呈明显的下降趋势。

Pitaya flower contains phosphorus, potassium, calcium, magnesium, zinc, iron and selenium et al mineral nutrients, of which potassium, magnesium, calcium, phosphorus contents are more abundant.

火龙果花含有人体需要的磷、钾、钙、镁、锌、铁和硒等矿质元素，其中以钾、镁、磷和钙含量更为丰富。

Pitaya is a one of the healthy fruits and has promising economic value.

火龙果是一种具有较高经济价值和保健美容作用的新兴水果。

The results indicated that improving amount of nitrogen fertilizer on fruit weight and number per plant in pitaya had obvious effect.

说明增施氮磷钾肥施用量对提高火龙果单果重和单株结果数的效果明显。

The Yellow Pitaya is yellow inside and out, and the Costa Rican pitayas are magenta on the outside and the inside.

黄火龙果，黄皮白肉；哥斯达黎加火龙果内外都呈亮粉色。

The two high levels compounds were identified as β-sitosterol ( 48.0mg) and allantoin ( 465.7mg), which will provide a scientific experimental basis to further development and utilization of pitaya seeds.

得到两个含量较高的单体化合物为β-谷甾醇（48.0mg）和尿囊素（465.7mg），为火龙果籽的进一步开发利用提供了科学实验依据。

Pitaya is a large red fruit with green tentacles on its skin.

火龙果是一种大型红色的水果，表皮上还有绿色的触角。

The drying technology of the pitaya flower is studied in this paper.

主要研究了霸王花的干制工艺。

Study on the macroporous resin separation and purification of Flavones from stems of Pitaya

大孔树脂吸附纯化火龙果茎黄酮类化合物的研究

In the north of China, it is quite easy to purchase the season fruit from Southeast Asia, such as Pitaya fruit from Thailand, pawpaw from Malaysia and bananas from Philippine.

来自泰国的火龙果，来自马来西亚的木瓜，来自菲律宾的香蕉。在中国北方城市，购买东南亚国家的时令水果已经是非常容易的事情。

It took about 27-30 days from blossom to ripen for pitaya fruit, fruit weight has 2 growth peaks during growth development period. The fresh and dry weight development of pitaya fruits presented doubles S curve.

火龙果果实从开花到成熟需27～30d，果实的单果重在生长发育期有两次增长高峰；果实鲜重、干重生长型均为双S曲线型。

Potassium content in pitaya fruit squama and flesh were at a fairly high level 3 days after flowering, and then intended to drop, potassium content in fruit pericarp was highest during fruit mature stage.

火龙果花后3d鳞片和果肉钾含量维持较高水平，之后呈下降趋势，果皮钾含量在果实成熟时最高。

Pitaya fruit contains more mineral nutrients, particularly potassium, phosphorus, magnesium, calcium-rich contents are rich. Mineral nutrients content of pitaya produced in Luodian conty located in Guizhou karst mountain area is higher than pitaya from Conghua, Guangdong. 6.

火龙果含有较多的矿质营养元素，特别是钾、磷、镁、钙的含量丰富；产于贵州喀斯特山区罗甸的火龙果矿质元素含量高于广东从化的火龙果。

Pericarp changed from green to light red, finally to faint red or mauve, soluble solids increased rapidly, acidity increased first and then decreased and water content increased when pitaya fruit became mature. 3.

火龙果在成熟期时，果皮由绿转至浅红，最后转至淡红或紫红色；可溶性固形物迅速增高，酸度升高后下降；水分含量增加。

At present, the study of pitaya quality and physiological system are not many in China and abroad, especially, the study of pitaya fruit development and quality analysis have not been involved in the karst mountain area under specific ecological condition.

目前，国内外对火龙果品质生理系统研究不多，特别是在喀斯特山区特定的生态条件下火龙果果实发育规律及果实品质分析还未涉及。