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滚石坳大队是我县农业学大寨的先进单位。1970年北方地区农业会议以来,这个队大搞农田基本建设,狠抓养猪积肥,不断改善生产条件,使粮食单产连续六年超千斤(1976年达1,400多斤),皮棉单产七年超《纲要》,五年实现一亩一头猪。其他各项生产指标也大幅度增长。这个大队的土壤肥力如何?怎样继续提高土壤肥力,实现高产更高产?带着这个题,我们于1977年1—5月对这个大队进行了调查。我们在山冲、塝垅和河畈等不同类型的田块共取土样31个进行室内
Rolling Stones Au column is my county agricultural advanced Dazhai units. Since the agricultural conference in the north of 1970, the team engaged in infrastructure construction of farmland, paid close attention to raising pigs’ accumulated fertilizer and continuously improved production conditions so that grain yield exceeded 1000kg in 1976 (up to 1,400kg in 1976) and lint yield exceeded seven years in a row. Outline ", five acres a pig. Other production indicators have also increased substantially. How about the soil fertility of this brigade? How to continue to increase soil fertility and achieve higher yield and higher yield? With this question, we conducted a survey of this brigade in January-May 1977. We took a total of 31 soil samples from different types of plots, such as mountain red,