深松耕法的由来深松耕法是在无产阶级文化大革命和批林批孔运动中,在深入开展“农业学大寨”、认真贯彻农业“八字宪法”的大好形势下出现的新生事物。我省气候严寒,主要产粮区松嫩平原和合江平原的土壤,大部分是黑土,一部分是白浆土、风砂土和盐碱土。年降雨量500—700毫米,其中60—70%集中在6、7、8三个月份,春季多旱,夏季多涝。冰冻期长达180—200天,无霜期只有100—140天。年平均气温为-5— The origin of deep-plowing law The deep-plowing law is a new-born thing that emerges under the great situation of carrying out “Agricultural Studies in Dazhai” and conscientiously implementing the “Eight Character Constitution” in the Great Proletarian Cultural Revolution and the Pledge of Forestry. The cold climate in our province, the major grain-producing areas Songnen Plain and Hejiang Plain soil, mostly black soil, part of the white soil, wind sand and saline soil. Annual rainfall of 500-700 mm, of which 60-70% concentrated in 6,7,8 three months, more drought in spring, summer and more waterlogging. Frozen up to 180-200 days, frost-free period of only 100-140 days. The average annual temperature is -5