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按全省稻作区域划分,我省温凉稻作带(通常称中北部地区)的水稻面积,初估为四百多万亩。按此划分,我州稻作主产区,即约有一百万亩水稻面积,分布于这一稻作带,约占全省温凉稻作带水稻面积四分之一上下。州内这一百万亩水稻,位于海拔一千八百至二千二百米,由于低纬高海拔,水稻生长季节平均温度在18℃以下,日照时数少,有效积温不高,整个水稻生长季节,都凉爽如秋。其中剑川县更为突出,9—10月就一雨似冬。因气温低,稻瘟病严重,单产低而不稳,常年亩产不到五百斤,最低的剑川单产徘徊于三百斤左右。
According to the province’s rice region, the rice area of the province’s warm and cool rice belt (usually called the central and northern regions) was initially estimated at over 4 million mu. According to this division, the main producing areas of rice in our province, that is, about one million mu of paddy area, distributed in the paddy belt, accounting for about one quarter of the province’s rice paddy area. The state of the one million mu of rice, located at an altitude of 1,800 to 2,200 meters, due to low latitude and high altitude, the average growing season of rice in the temperature below 18 ℃, less sunshine hours, the effective accumulated temperature is not high, the entire rice Growing season, all cool as autumn. Jianchuan which is more prominent, 9-October on a rainy winter. Due to low temperature, rice blast serious, low yields and instability, perennial less than five pounds per mu, the lowest yield in Jianchuan hovering at about 300 pounds.