深松耕法是在无产阶级文化大革命中,广泛深入地开展农业学大寨群众运动,认真贯彻农业“八字宪法”和实行科学种田的基础上出现的新生事物。 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-2—3℃,活动积温1,900—2,700℃。夏季日照时间长,昼夜温差大,7月份温 The method of deep-plowing is a new-born thing that appears in the proletarian cultural revolution based on extensive and in-depth study of the mass movement of agriculture in Dazhai, conscientiously implementing the “eight-character constitution” of agriculture and implementing scientific farming. In our province, the climate is very cold. Most of the soil in Songnen Plain and Hejiang Plain, the main grain-producing area, is black soil. Part of it is white earth, wind sand and saline soil. The annual rainfall is 500-700 mm, of which 60-70% is 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 annual average temperature is -2-3 ℃, activity accumulated temperature 1,900-2,700 ℃. Summer sunshine time, temperature difference between day and night, July temperature