我省位于祖国北疆,气候冷凉,年平均气温为-4—5℃,无霜期从北至南在90～135天之间,作物生育期间活动积温1900～2700℃,年度间波动较大,高低之间相差700℃左右。年平均降雨量为400～900毫米,60～70%集中在7、8、9月份。土壤大部是黑土,占耕地面积的50%以上,次为黑黄 The province is located in the northern part of the motherland, the climate is cold, the annual average temperature of -4-5 ℃, frost-free period from north to south in the 90 to 135 days, crop accumulated during the activity accumulated temperature 1900 ~ 2700 ℃, The difference between the level of about 700 ℃. The average annual rainfall is 400 ~ 900 mm, 60 ~ 70% concentrated in July, August and September. Most of the soil is black soil, accounting for more than 50% of the cultivated land area, followed by black and yellow