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石家庄地区在深入开展农业学大寨运动中,坚持以阶级斗争为纲,大力开展群众性科学实验,大搞种植革命,实行间作套种,耕作制度由过去的一年一熟、两年三熟,发展到一年两种两收、三种三收。1976年粮粮间作三种三收的面积为230多万亩,占粮田面积的40%。三种三收平均亩产都在1,200—1,300斤,最高达到2,349.3斤,比同等条件下两种两收每亩增产200斤以上。
Shijiazhuang area in carrying out agricultural science Dazhai movement, adhere to the class struggle as the key link, vigorously carry out mass scientific experiments, vigorously cultivate the revolution, intercropping interplanting, tillage system from the past year cooked, cooked two years, The development of two kinds of two kinds of income a year, three kinds of three income. In 1976, the inter-grain and grain-crop intercropping of three crops took up more than 230 million mu, accounting for 40% of the total grain crop area. Three kinds of average yield per mu are 1,200-1,300 pounds, up to 2,349.3 pounds, more than two kinds of two kinds of income per acre under the same conditions 200 kilograms or more.