营养诊断施肥是林业现代化技术之一,针叶营养诊断采样是诊断施肥不可缺少的内容。因此,几年来,我们对落叶松针叶营养诊断采样技术进行了研究。通过大量采样分析和测定,取得了一套完整的落叶松针叶营养诊断采样技术。该项技术对落叶松丰产林的诊断施肥、分析和了解树体养分状况具有一定的指导意义。针叶是落叶松进行光合作用的重要器官。针叶养分含量多少直接反映树体营养丰 Nutrition diagnosis Fertilization is one of the forestry modernization techniques, coniferous nutrition diagnosis sampling is an indispensable part of diagnosis and fertilization. Therefore, in recent years, we have studied the larch needles nutrition diagnosis sampling technique. Through a large number of sampling analysis and determination, a complete set of larch needle coniferous nutrition diagnosis sampling technology has been obtained. This technique has certain guiding significance for the diagnosis and fertilization of Larch forests and for the analysis and understanding of the status of tree nutrients. Needle leaves are important organs of photosynthesis of larch. Coniferous nutrient content directly reflect the tree nutrition abundance