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1991年红兴隆地区甜含糖率较1990年下降1.4％,下降幅度8％。分析其下降原因为:一、引进的德国KWS5173品种占播种面积的14.4％,比国产甜研302含糖率低3.31％,产糖量降低6.6kg/亩,且德国品种表现抗病性差、空心多,影响了甜菜制糖工艺,出糖率低;二、1991年5～9月比历年平均多降雨110mm,洪涝灾害致使绝产面积50％以上,土壤持水量大,增加了块根的有害氮含量,加之日照时数减少,温度降低,影响了后期糖份积累;三、1991年5月受风灾影响毁种面积达4万亩,补种晚影响了糖分累积,加之
In 1991, the sweet sugar content of Hongxinglong area decreased by 1.4% compared with that of 1990, a decrease of 8%. Analysis of the reasons for the decline: First, the introduction of the German KWS5173 species accounted for 14.4% of sown area, sugar content than domestic sweet research 302 low 3.31%, sugar yield decreased 6.6kg / acre, and the German varieties showed poor resistance, hollow And affected sugar beet sugar production process, the low rate of sugar; 2, from 1991 to September than in previous years on average more than rainfall 110mm, floods resulting in more than 50% of the area of abortion, soil water capacity, increasing the harmful nitrogen Content, coupled with reduced sunshine hours, the temperature decreased, affecting the late accumulation of sugar; Third, May 1991 by the typhoon disaster destroyed species of up to 4 acres, replanting late affect the sugar accumulation, combined with