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我市六县一郊,水旱田面积273万亩。实行生产责任制后,农户为了获得增产,大量地追施氮肥,造成了氮肥用量越来越大,病虫害越来越严重,而产量反而不见提高的被动局面。1983年,我们根据这次土壤普查所掌握的大批分析化验数据,吸取了往年的经验教训,综合分析了近年来大量田间试验资料,开始按计算摸式即: 对各个地块进行具体的投肥量计算,最后以各地块为单位将计算结果开列成“配方施肥单”,按单施肥。早晚两造共示范和推广面积149万亩,获得了显著的效果。据全市19个公社70168亩晚造示范田调查,配方施肥田平均亩产598.2斤,比当地习
Six counties in our city suburbs, water and dry land area of 273 mu. After the production responsibility system was implemented, in order to obtain more output, peasants heavily used nitrogen fertilizer, resulting in an increasing use of nitrogenous fertilizer, more and more pests and diseases, and no increase in output, but a passive situation. In 1983, based on a large amount of analytical laboratory data held by this soil census, we learned the lessons learned in previous years and comprehensively analyzed a large amount of field trial data in recent years. We started to calculate by means of calculation that: The amount of calculation, and finally to the block as a unit of calculation results will be listed as “formula fertilizer list”, according to a single fertilizer. Both morning and evening to create a total of 1.49 million mu of demonstration and promotion area, access to significant results. According to the city’s 19 communes 70168 acres late demonstration field survey, formula fertilization field average yield 598.2 kg, than the local study