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我院陕北教学基地地处安塞县砖窑湾,属高寒丘陵沟壑区,海拔约1千公尺。年平均气温7.8～9.3℃,无霜期约150天,7月份平均气温21.7～22.9℃,大于10℃的活动积温3,100℃,在特早熟棉区活动积温3,200～3,300℃以下,一般认为不能植棉。据当地老农谈,解放后曾试种过几次棉花,“光结疙瘩不憋(不吐絮),不顶事”。1975年结合教学,在基地和挂钩的苗店生产队试种1.6亩棉花,处理得当的小区,折亩产50多斤皮棉。
Teaching base in our hospital in northern Shaanxi Ansai County is located in brick kiln Bay, is alpine hilly and ravine, about 1 thousand meters above sea level. The annual average temperature of 7.8 ~ 9.3 ℃, frost-free period of about 150 days, July average temperature of 21.7 ~ 22.9 ℃, greater than 10 ℃ active accumulated temperature 3,100 ℃, in the precocious cotton area active accumulated temperature 3,200 ~ 3,300 ℃ below, generally considered not cotton. According to the local farmers to talk about, after the liberation had tried to cultivate a few times the cotton, “light knot bumps do not hold back (do not bash), not the top thing.” In 1975 with teaching, at the base and linked to the Miaodian production team to test 1.6 acres of cotton, properly handled plot, yield 50 kg per mu lint.