【摘要】 通过对黑龙江省富裕县苗圃的杨树扦插苗施肥试验发现 ,施肥能促进苗木的高、径生长。施肥最理想比例为N2 P3K4 、Ν2 P4 K3和N3P1K3,高生长最大可比对照提高 2 6cm ,增幅 19.4 % ;径生长最大可比对照提高 0 .11cm ,增幅 9.7% ,并可获得良好的经济效益更多还原

【Abstract】 Test in cutting and application in Seedling Nursery of Fuju County indicated,that optimum proportion of applying was 2N∶3P∶4K,2N∶4P∶3K and 3N∶1P∶3K:Heiqht growth was 26 cm more than the check;amount of growth increased by 19.4%;Diameter growth was 0.11 cm more than the check,amount of growth increased by 9.7%.更多还原