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为了进一步明确白菜型冬油菜在北方寒旱区的越冬安全性、扩大冬油菜的种植区域,本研究通过2008—2013年57点18个白菜型冬油菜品种的多点试验,统计分析不同生态区不同品种越冬率的变化情况.结果表明:研究期间,北方旱寒区白菜型冬油菜的越冬率在70%~90%,且年份间、品种间变化不明显,稳定性高,经济效益显著.以甘肃天水为起点,含甘肃全部,西藏拉萨、林芝以南,青海民和以东,至新疆乌鲁木齐、拜城,阿勒泰、塔城以南,喀什以东;向东沿黄河一线到宁夏、内蒙古临河以南、陕北、山西祁县周边、河北大名、天津、北京、山东潍坊以北、辽宁葫芦岛南部、吉林延边南部等地为白菜型冬油菜安全越冬地区.陇油6号、陇油7号、陇油8号、陇油9号为安全越冬白菜型冬油菜品种.
In order to further clarify the safety of Brassica campestris winter overwintering in northern cold and dry areas and to expand the planting area of winter rape, this study adopted the multi-point test of 57 points and 18 cabbage-type winter rape varieties from 2008 to 2013, The results showed that during the study period, the overwintering rate of cabbage-type winter rape was in the range of 70% -90% in the dry and cold region of northern China with no significant change among the varieties, with high stability and significant economic benefits. Starting from Gansu Tianshui, it contains all Gansu, Lhasa, Nyingchi, Qinghai and east of Qinghai, and reaches Urumqi, Baicheng, Altay, Tacheng and Kashi east of Tibet; eastward along the Yellow River to Ningxia and Inner Mongolia Lin’an, northern Shaanxi, Shanxi Qixian around, Hebei Daming, Tianjin, Beijing, Shandong Weifang north of Liaoning Huludao southern Jilin Yanbian southern cabbage winter rapeseed and other places for the safe winter. Longyou 6, Long Oil 7, Longyou 8, Longyou 9 for the winter cabbage-type safety winter rape varieties.