白菜型冬油菜在甘南高原适宜播期研究初报

Preliminary Study on Suitable Sowing Date of Cabbage Type Winter Rape in Gannan Plateau

摘要: 以陇油7号为参试品种，通过对5个不同播期下冬油菜的越冬率、生育特性特征表现、经济性状、产量表现等进行分析，得出8月1日—13日为甘南高原海拔2 800 m地区适播期，8月1日和8月7日2个播期表现出良好的适应性和农艺性状，生育期314～328 d，产量1 281～1 961 kg/hm²。

Abstract: Taking Longyou No. 7 as the test variety, through the analysis of the overwintering rate, growth characteristics, economic characters and yield performance of winter rape under five different sowing dates, it is considered that August 1 to August 13 is the suitable sowing date in the 2 800 m altitude area of Gannan plateau, especially the two sowing dates of August 1 and August 7 showed good adaptability and agronomic characters. The growth period is 314～328 d, and the yield is 1 281～ 1 961 kg/hm~2.