一九七七年我县部分场、所、队学习外地先进经验,坚持自力更生,就地取材,广辟肥沂。在晚稻生产上进行了沸石肥效试验,均取得了不同程度的增产效果,增产幅度为2.1～25.4%,平均增产9.1%。通过试验表明:沸石本身没有肥效,但它是一种多孔性物质,具有保肥、保水、改良土壤 In 1977, some of our farms, institutes and teams learned advanced experiences in the field, insisted on self-reliance, took local materials and expanded their business. In the late rice production, the zeolite fertilizer efficiency test was conducted. All of them achieved different degrees of stimulation effect, with the increase rate of 2.1-25.4% and the average increase rate of 9.1%. The test shows that: zeolite itself has no fertilizer, but it is a porous material, with fertilizer, water, soil improvement