所谓“夏播油菜”即4月下旬至6月下旬播种,秋季收获的油菜。 由云南省农科院油料所承担“八五”省重点攻关项目“甘兰型油菜‘双高双低’新品种选育”,首批选育出适合山区、高寒山区种植的高产、优质、低硫、低芥的夏播油菜新品种“云油20号”、“云油21号”,其技术指标达到国内先进水平。两个新品种的诞生,极大地推动了我省夏播油菜的推广工作。1993年—1998年,云南省累计推广夏播油菜30余万亩,绝大多数分布在海拔2500—3400米的高寒山区。平均亩产在120—150公斤,最高达267公斤,平均比普通品 The so-called “summer sowing rape” that is sowing in late April to late June, autumn rape harvest. By the Yunnan Provincial Academy of Agricultural Sciences oil to assume “85” provincial key project “Brandou rape ’double high double low’ new breed of breeding”, the first batch of breeding suitable for mountainous, alpine cultivation of high yield, high quality, Low sulfur, low mustard summer rapeseed new varieties of “cloud oil on the 20th”, “cloud oil on the 21st,” its technical indicators have reached the advanced domestic level. The birth of two new varieties, greatly promoted the promotion of summer rape in our province. From 1993 to 1998, more than 30 million mu of summer sowed rape were widely popularized in Yunnan Province, the vast majority of which were distributed in the alpine region at an altitude of 2500-3400 meters. The average yield per mu in 120-150 kg, up to 267 kg, an average of more than ordinary goods