新疆石河子地区加工番茄里格尔87—5最适播期试验

以加工番茄里格尔87—5为材料，于2007年在石河子地区进行了分期播种试验，研究播期对加工番茄部分农艺性状、主要品质和产量的影响。结果表明，播期对番茄的株高和茎粗有着显著的影响，早播番茄的茎粗最粗，晚播番茄的株高最高，中播番茄株高和茎粗处于两者之间；播期对番茄主要品质成分的含量有很大影响，中播番茄果实中维生素C、可溶性糖、糖酸比最高，早播次之、晚播最低，随着播期的推迟，番茄中有机酸含量逐渐升高，播期对番茄果实中硝酸盐含量无明显影响；影响不同播期番茄产量的主要因子是单株果数，其次是单果重，番茄产量随播种期的延后呈先增后减的趋势。因此，里格尔87—5在新疆石河子地区最适播期为4月下旬。

Suitable Sowing Time for Processing Tomato Variety Liger 87-5 in Shihhotze Regions of Xinjiang Autonomous Region

The experiment on sowing time for the processing tomato variety liger 87 -5 in the Shihhotze Regions of the Xinjiang Autonomous Region was conducted to study the influence of sowing time on the agronomic characters,main quality components and yield of the processing tomato. The results showed that different sowing times had greatly influenced on tomato＇s plant height and stem diameter. The stem diameter in early sowing time on 5^th April was the thickest, while the plant height in late sowing time on 5^th May was the highest. The different sowing times also had greatly influenced on the main quality components of tomato. The average content of vitamin C, soluble sugar, and sugar and acid ratio in the middle sowing time on 15^th April was the highest, while they were lowest in late sowing time on 5^th May. The average content of the organic acid increased as the sowing time delayed. The average content of NO3 did not change in the different sowing time. The main factors that influenced the yield in the different sowing times were the single fruit weight and then the fruit number per plant. The tomato yield in early sowing time was higher than in late sowing time. It was suggested that the suitable sowing time for the processing tomato variety liger87 - 5 in the Shihhotze Regions was in the last ten days of April.