提高桃果实品质一直是学者们研究的热点，为全面了解不同桃品种在光热资源充足的沙漠边缘地区的栽培表现，为同类区域桃树栽培提供科学依据，基于利用光热资源增加桃果实糖分积累的理论，以6个桃品种为试材，通过田间调查和品质指标测定，比较这6个桃品种在武威沙地栽培条件下的物候期和果实品质表现。结果表明，6个桃品种在武威沙地栽培，果实发育期92～174 d。不同桃品种单果重97.35～269.68 g，由大到小依次为中华寿桃、雨花露、夏甜、中桃5号、红油桃4号、瑞光27号。果实着色由深到浅依次为瑞光27号、中桃5号、红油桃4号、夏甜、雨花露、中华寿桃。不同桃品种可溶性固形物含量为112.8～150.0 g/kg，蔗糖、果糖和葡萄糖含量为80.48～127.34 mg/g，甜度值由高到低依次为雨花露、夏甜、红油桃4号、中桃5号、中华寿桃、瑞光27号。不同桃品种苹果酸含量为0.85～3.22 mg/g，柠檬酸含量为0.27～2.77 mg/g，总酸含量由高到低依次为红油桃4号、中桃5号、瑞光27号、雨花露、中华寿桃、夏甜。可见，雨花露、夏甜、红油桃4号、中桃5号、瑞光27号这5个桃品种在武威沙地栽培时均能正常成熟，且果实品质表现良好。

Fruit quality improvement in peach has always been the hotspot for scholars. To fully understand the cultivation performance of different peach varietiesin desert edge areas with sufficient light and heat resources, and to provide references for peach cultivation in different ecological regions, based on the fruit sugar accumulation theory, six peach varieties were taken as test materials, through field investigation and quality index determination, the phenological period and fruit quality performance of six peach varieties in Wuwei sandy land were determined. The results showed that the fruit development period was 92 to 174 days. The single fruit weight of different peach varieties was 97.35 to 269.68 g, which ranked as Zhonghuashoutao, Yuhualu, Summer Sweet, Zhongtao 5, Hongyoutao 4 and Ruiguang 27. The fruit coloration from deep to light was as followed: Ruiguang 27, Zhongtao 5, Hongyoutao 4, Summer Sweet, Yuhuanlu and Zhonghuashoutao. The content of soluble solids in different peach varieties was 112.8 g/kg to 150.0 g/kg, the contents of sucrose, fructose and glucose were 80.48 to 127.34 mg/g, and the sweetness values from high to low were: Yuhualu, Summer Sweet, Hongyoutao 4, Zhongtao 5, Zhonghuashoutao and Ruiguang 27. The malic acid content of six peach varieties was 0.85 to 3.22 mg/g, the citric acid content was 0.27 to 2.77 mg/g, and the total acid content from high to low was as followed: Hongyoutao 4, Zhongtao 5, Ruiguang 27, Yuhuanlu, Zhonghuashoutao and Summer Sweet. The results showed that among the six peach varieties, besides Zhonghuashoutao, other five varieties could mature normally, and the fruit quality was good in Wuwei sandy land.

S662.1

甘肃省科技特派员创业示范基地项目(20CX9NH163)。