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在毛主席革命路线指引下,农业学大寨运动的推动下,一九七五年秋,对长葛县孟排大队的耕层土壤作了全面普查,发现土壤有效磷含量较低,第六生产队有一块俗称“抓金板”的黄土,有效磷含量最低,仅为3·5ppm。群众普遍议论说:“‘抓金板’,‘大肚汉’,为什么能吃能喝不能干”。历年都为这块地,又气又急。我们针对上述情况,安排了过磷酸钙及钙镁磷肥的肥效试验,以解决生产中存在的问题。一、试验方法与经过一九七五年麦播时,在二十八亩“抓金板”地中,安排了重复两次的小区对比试验,小区面积半亩。按亩施粗肥八方、碳铵九十斤(其中底肥四十斤,返青追肥五
Under the guidance of Chairman Mao’s revolutionary line and under the guidance of the Dazhai Agricultural Movement, in the autumn of 1975, a comprehensive survey was conducted on the topsoil of the Mengpai Brigade in Changge County and found that the available phosphorus content in the soil was relatively low. The sixth production The team has a loess commonly known as “grab gold plate”, the lowest available phosphorus, only 3.5ppm. People generally talked about: “’grab the gold plate’, ’belly Han’, why can eat and drink can not do.” Throughout the years for this piece of land, angry and anxious. In response to the above situation, we have arranged fertilizer efficiency tests of SSP and Ca-Mg phosphate fertilizer to solve the problems in production. First, the test method And after 1975 broadcast sowing, twenty-eight acres in the “grab the gold plate” in the ground, arranged for repeated plots of plot comparison, plot area of half a mu. Mushi fat by P Plus, ammonium bicarbonate ninety pounds (of which forty pounds at the end of fertilizer, green top five fertilizer