我们合江地区位于北纬四十九度三十九分至四十八度三十分之间,为我国一年一熟高寒稻作区。我区种稻虽然土壤肥沃,水源丰富,光照充足,但年平均气温低,5—9月份平均气温仅16.7℃,早春气温又低,回暖缓慢;八月上旬冷空气侵袭,下旬气温又急剧下降,无霜期为105—130天。全年大于10℃的活动积温为2200—2500℃,由于热 Our Hejiang area is located between 49 degrees north latitude and 39 minutes to 48 degrees north latitude for one year in a year. Although the soil is rich in paddy rice in our area, the light source is abundant, but the annual average temperature is low, the average temperature is only 16.7 ℃ in May-September, the temperature is low in early spring and the warming is slow; in early August, cold air invasion and sharp decrease in temperature in late , Frost-free period is 105-130 days. The accumulated temperature above 22 ° C for activities throughout the year is 2200-2500 ° C due to heat