试论陕北黄芥及其分布区的生态特征

Study on the yellow mustard and the ecologic feature of its distribution zone in North Shaanxi

通过对我国芥菜型油菜品种资源目录资料及陕北黄芥分布区的地理和气候资料分析认为：①陕北黄芥抗逆性强、含油量高、芥酸含量低，是不同于我国关中、黄淮、西南地区及长江流域芥菜型油菜的另一种群；②陕北高原及其邻近的晋、冀北部和内蒙古、宁夏、甘肃等省、区部分地区是类似于青藏、云贵高原芥菜型油菜的高含油生态区。

Yellow mustard in North Shaanxi is a quite another population with high resistance,high oil content and lower erucic acid content in Brassica juncea .It is different from B.juncea in the regions of Guanzhong,Huanghuai,Southwest of China and Changjiang River valley.Rapeseed of Brassica juncea in North Shaanxi Plateau,North Hebei,lnner Mongolian,Ningxia and Gansu shares similar ecologic features with high oil content to plateaus of Qingzang and Yungui.