论文部分内容阅读
佳木斯地区甜菜含糖在黑龙江省甜菜产区一直处于较高水平。但从八十年代以来甜菜含糖呈现了下降趋势,1986年至1991年的5年间,甜菜块根平均含糖比1982年以前的平均含糖降低了1.59度,严重影响了糖厂的经济效益。针对这一问题我们分析了甜菜糖分降低的原因,并在1990、1991年进行了提
Jiamusi beet sugar content in the beet producing areas in Heilongjiang Province has been at a high level. However, the sugar content of beet has shown a downward trend since the 1980s. During the five years from 1986 to 1991, the average sugar content of sugar beet roots dropped by 1.59 degrees compared with the average sugar content before 1982, seriously affecting the economic benefits of sugar mills. In response to this problem we analyzed the reasons for the decrease of beet sugar, and in 1990, 1991 were mentioned