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为探讨新型液体肥料植物动力 2 0 0 3(简称ＰＰ2 0 0 3)应用效果 ,1998年在 10个地市的16个国有林场及个别国有苗圃进行了ＰＰ2 0 0 3施用试验 ,试验树种包括苹果、梨、桃、李、板栗、枣等树种和部分用材林苗木 ,品种或品系 2 0余个。主要进行与常规叶面肥的对比试验及一般性施
In order to explore the application effect of the new type of liquid fertilizers plant motility 2 0 0 3 (PP2 0 0 3), PP2 0 0 3 was applied in 16 state-owned forest farms and some state-owned nurseries in 10 cities in 1998. The test species include apple , Pear, peach, plum, chestnut, jujube and other tree species and part of timber seedlings, varieties or lines more than 20. The main comparison with conventional foliar fertilizer and general application