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测定了 9个不同 N、P配比处理对杜仲叶含胶量与生长量的影响 ,结果表明 ,( 1)杜仲叶片含胶量除 N3P2 、N3P3外 ,其它处理均比对照有所增加 ,以 N1P2 为最高 ;( 2 )杜仲施肥后 ,对照的地径生长有两个峰期 ,其它各处理先后自 5月 15日～ 6月 15日开始加速生长 ,至 9月 15日总体形成一个峰期 ,8月生长最快 ,以 N1P2 和 N1P3处理最大 ;( 3)高生长对照有两个峰期 ,除 N3P2 出现两个峰期 ,其它各处理先后由 4月 15日～ 5月 15日开始至 9月 15日基本形成一个峰期 ,6～ 7月生长最快 ,以 N1P2 和 N1P3最大 ;( 4)从杜仲生长速率看 ,施肥应在杜仲芽萌动前进行 ,施肥配比 N1P2 ( N:P2 O5=1:1.2 )为最优。
The results showed that: (1) The content of gel in leaves of Eucommia ulmoides addition to N3P2 and N3P3 increased, compared with the control N1P2 was the highest; (2) After fertilization, the control had two peak growth stages. The other treatments started to accelerate from May 15 to June 15 and then peaked on September 15 , With the fastest growth in August and the largest in N1P2 and N1P3 treatments. (3) There were two peak periods in high growth control except for the two peak periods of N3P2. The other treatments were from April 15 to May 15 (4) According to the growth rate of Eucommia ulmoides, the fertilization should be carried out before the germination of Eucommia ulmoides buds. The ratio of fertilizer application N1P2 (N: P2 O5 = 1: 1.2) is the best.