黑河地区是我省早熟大豆产区,虽然活动积温不及我省南部的一些县(市)高,但其主产区≥10℃活动积温仍可达到2000～2200℃,基本可以满足早熟大豆的生长发育要求。6～8月大豆生育期间,平均气温18～20℃,雨量充沛,水热同期,昼夜温差大;土地开垦年限比较短,土壤有机质含量较高,土质比较肥沃。这些在一定程度上弥补了热量 Heihe area is a precocious soybean producing area in our province. Although the active accumulated temperature is less than some counties (cities) in the southern part of our province, the active accumulated temperature of ≥10 ℃ can reach 2000 ~ 2200 ℃ in the main producing area, which can basically meet the growth of early maturing soybean Developmental requirements. 6 ~ August soybean growth period, the average temperature of 18 ~ 20 ℃, abundant rainfall, hydrothermal over the same period, large temperature difference between day and night; land reclamation period is relatively short, higher soil organic matter content, fertile soil. To some extent, these make up for the heat