Under rice-wheat or rice-oilseed rapc cropping system, seven oilseed rape cultivars and two wheat cultivars were used to study the difference of oilseed rape and wheat in tolerance to Mn deficiency.

• 选用酎缺锰能力不司的7个油菜品种和2个小麦品种，在水旱轮作的严重缺锰土壤上，进行了2种作物不同品种耐缺锰能力的比较研究。