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由辽宁省果树所主持的“山楂树应用稀土效应及施用技术研究”及与营口市磷肥厂共同主持的“山楂树磷肥肥效及施用量的研究”成果,于1990年3月6日通过了省级技术鉴定。鉴定认为该两项成果分别具有和达到了国内先
The results of the research on the effects of rare earths applied by hawthorn tree and its application technology hosted by the fruit trees of Liaoning Province and the research on the effect of fertilizer and application rate of hawthorn phosphate fertilizer co-hosted by Yingkou Phosphate Fertilizer Plant were approved by the provincial Level technical appraisal The appraisal believes that the two achievements have reached and reached the domestic first