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SUN Xiao-e, MENG Xian-fa, LIU Zhao-pu, LONG Xiao-hua**
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Abstract: In order to understand the effects of fertilizers interaction on the growth of Jerusalem artichoke, a field experiment with orthogonal design was conducted to study the effects of nitrogen (N), phosphorus (P), and their interaction on the tuber yield and its quality of J. artichoke “Nanyu No. 1”. Both N and P had significant effects on the tuber yield, its dry matter content, and total sugar, reducing sugar, and inulin contents (P<0.01). N and P interaction had significant effects on the tuber yield and its dry matter and reducing sugar contents (P<0.05), and extremely significant effects on the tuber’s total sugar and inulin contents (P<0.01). When the P fertilization rate was 135 kg P2O5·hm-2, its interaction with N was positive (synergistic) when the N fertilization rate was less than 180 kg·hm-2, but negative (antagonistic) when the N fertilization rate was above 180 kg·hm-2. When the N fertilization rate was 180 kg·hm-2 and the P fertilization rate was 135 kg P2O5·hm-2, the interactive effect of N and P increased, with the tuber yield and its dry matter, total sugar, reducing sugar, and inulin contents being the highest. Above all, the optimal basis fertilization for J. artichoke in Laizhou City of Shandong Province, East China would be 180 kg·hm-2 of N and 135 kg·hm-2 of P2O5.
SUN Xiao-e, MENG Xian-fa, LIU Zhao-pu, LONG Xiao-hua**. Effects of nitrogen and phosphorus interaction on the tuber yield and its quality of Jerusalem artichoke.[J]. cje.
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URL: http://www.cje.net.cn/EN/abstract/abstract17302.shtml
http://www.cje.net.cn/EN/Y2013/V32/I2/363