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在农业学大寨群众运动的推动下,我区支农工业不断发展,化肥产量逐年增加,这对发展我区农业生产起了很大作用。但随着作物产量的不断提高和氮素化肥的相应增加,氮、磷比例失调的矛盾日趋突出。通过土壤肥力普查看出,全区百分之八十二的点属缺磷类型,其中百分之六十的点为严重缺磷。农业生产实践证明,在土壤缺磷的情况
Driven by the mass movement of agriculture in Dazhai, the supportive agriculture industry in our region has been developing continuously and the output of fertilizers has increased year by year, which has played a significant role in the development of agricultural production in our region. However, with the continuous increase of crop yield and the corresponding increase of nitrogen fertilizers, the contradiction between the proportion of nitrogen and phosphorus has become increasingly prominent. According to the soil fertility survey, 82% of the entire area is deficient in phosphorus types, of which 60% are severely phosphorus-deficient. Agricultural practices have proved that phosphorus deficiency in the soil