概述银杏是我国特有的多功能树种,要用价值极大,银杏叶的开发利用已成为当今世界植物开发的热点之一。针对生产中叶用银杏园普遍忽视磷钾肥的应用所产生的叶子产量低、质量下降,经济效益低下的实际,本文采用随机区组设计方法,研究了不同N、P、K施肥量组合对银杏叶片产量和质量的影响。研究结果表明:概括归纳主要结论。试验材料及方法试验地概况试验地位于郯城县育森林业科研中心。该地年降雨量 Overview Ginkgo biloba is a unique multi-functional tree species, with great value, the development and utilization of Ginkgo biloba has become one of the hot spots in the world today’s plant development. In view of the fact that the production of middle leaves of Ginkgo biloba generally neglected the application of P and K fertilizer, the output of leaves was low, the quality was declining and the economic efficiency was low. In this paper, randomized block design method was used to study the effects of different N, P, The impact of production and quality. The result of the research shows that the main conclusions are summarized. Test materials and methods The test site is located in Yuncheng Forestry Research Center. The annual rainfall