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河北省土壤肥料学会于7月25～30日在北戴河召开了科学施肥学术讨论会,到会代表52人,会议共收到论文33篇。会议除大会宣读论文外,还分专题进行了交流讨论。 会议回顾总结了河北省科学施肥的研究并用于生产的技术成果,如氮肥关键时期追施、硫铵拌种、秸杆高温堆肥、四合一混合沤肥、留麦地压绿肥、磷肥的有效条件和合理施用技术、碳铵合理保存和深施、粮食和绿肥间作、土壤营养诊断、尿素灌溉施肥、水稻施锌、苹果施铁和绿肥上山等。这些成果有的已大面积推广应用,在生产中发挥了很好的作用。 会议还分析了河北省化肥施用现状,1979年全省平均亩施化肥(标准肥)73斤,其中氮(N)与磷(P_2O_5)
Soil and Fertilizer Society of Hebei Province held a scientific seminar on fertilizer application in Beidaihe from July 25 to July 30, with 52 delegates attending the conference. The conference received 33 papers. In addition to the conference to read papers, but also held a special topic of exchange and discussion. The meeting reviewed and summarized the scientific and fertilization research and the technical achievements for production in Hebei Province, such as the top-dressing of nitrogenous fertilizer, ammonium sulfate dressing, high-temperature straw compost, four-in-one mixed fertilizer, And rational application of technology, the rational preservation and application of ammonium bicarbonate, intercropping of grain and green manure, diagnosis of soil nutrition, urea fertilization, zinc fertilization in rice, application of iron by apple and green manure uphill. Some of these achievements have been popularized and applied extensively and have played a very good role in the production. The meeting also analyzed the present situation of chemical fertilizer application in Hebei Province. In 1979, the average fertilizer yield in the province was 73 kg, of which nitrogen (N) and phosphorus (P 2 O 5)