论文部分内容阅读
根据《中国甜菜地理》划分,东北甜菜栽培区主要包括黑龙江、吉林两省及辽宁省西北部,内蒙古东四盟等地区,为我国甜菜主要产区,甜菜种植面积占全国70%左右,这个地区的西部有大面积的盐渍土壤及松花江、辽河冲积土壤,适合于苋科、藜科及蓼科植物生长,其中有许多种类为甜菜害虫寄主植物,当甜菜幼苗出土后,甜菜苗期害虫
According to the classification of “Chinese sugar beet geography”, the beet cultivation area in northeast China mainly includes Heilongjiang and Jilin provinces, the northwestern Liaoning province, Inner Mongolia Dongsimeng, and other areas. It is the main producing area of beet in China, and the beet cultivation area accounts for about 70% of the national total. There are large areas of salted soil in the west and alluvial soil in the Songhua River and Liaohe River. It is suitable for the growth of the plants of the Amaranthaceae, Chenopodiaceae and Polygonaceae. Among them, many species are the beet host plants. After the beet seedlings are excavated,