黄檗生长性状氮磷钾响应模型

Response Model of Growth Traits of Phellodendron amurense to N,P,K

利用L 9(34)正交试验法设计黄檗幼树氮磷钾不同配比施肥试验,建立黄檗生长性状对氮磷钾响应的模型.结果表明:以黄檗幼树生长性状为因变量y,N肥、P肥、K肥分别为自变量x_(1)、x_(2)、x_(3),则黄檗幼树树高生长对施肥处理的响应模型为y=0.9625+0.2182x_(1)+4.0685x_(2)-3.8394x_(3)-0.0111x^(2)_(1)-0.1184x^(2)_(2)-0.1071x^(2)_(3)-0.0764x_(1)x_(2)+0.1097 x_(1) x_(3)+0.1865x_(2) x_(3),适宜的N、P、K施肥量分别为28.47~31.47 g/㎡、15.82~17.48 g/㎡、9.49~10.49 g/㎡;黄檗幼树地径生长对施肥处理的响应模型为y=1.7625+0.5757x_(1)+8.4756x_(2)-8.4014x_(3)-0.0218x^(2)_(1)-0.2481x^(2)_(2)-0.3050x^(2)_(3)-0.2029x_(1) x_(2)+0.2715x_(1) x_(3)+0.4833x_(2) x_(3),适宜的N、P、K施肥量分别为28.47~31.47 g/㎡、15.82~17.48 g/㎡、9.49~10.49 g/㎡;黄檗幼树侧枝伸长生长对施肥处理的响应模型为y=1.3375-0.6427 x_(1)-0.9682x_(2)+2.1645x_(3)+0.0061x_(2)1+0.0383x_(2)2+0.0370x_(2)3+0.0403x_(1) x_(2)-0.0348x_(1) x_(3)-0.1075x_(2) x_(3),适宜的N、P、K施肥量分别为15.82~17.48 g/㎡、9.49~10.49 g/㎡、15.82~17.48 g/㎡.

L 9(34)orthogonal design was used to design the experiment of N,P and K fertilizer application in young trees of Phellodendron amurense Rupr.,and the response model of growth characters of young trees of Phellodendron amurense Rupr.to N,P and K was established.Taking the growth character of young trees of Phellodendron amurense Rupr.as dependent variable y,N,P and K fertilizer as independent variables x_(1),x_(2),and x_(3).The results showed that the response model of young trees of P.amurense Rupr.height growth to fertilization was y=0.9625+0.2182x_(1)+4.0685x_(2)-3.8394x_(3)-0.0111x^(2)_(1)-0.1184x^(2)_(2)-0.1071x^(2)_(3)-0.0764x_(1) x_(2)+0.1097x_(1) x_(3)+0.1865x_(2) x_(3) and the optimum amount of N,P and K fertilization were 28.47~31.47 g/㎡,15.82~17.48 g/㎡,9.49~10.49 g/㎡.The response model of young trees of P.amurense Rupr.ground diameter growth to fertilization was y=1.7625+0.5757x_(1)+8.4756x_(2)-8.4014x_(3)-0.0218x^(2)_(1)-0.2481 x^(2)_(2)-0.3050x^(2)_(3)-0.2029x_(1) x_(2)+0.2715x_(1) x_(3)+0.4833x_(2) x_(3) and the optimum amount of N,P and K fertilization were 28.47~31.47 g/㎡,15.82~17.48 g/㎡,9.49~10.49 g/㎡.The response model of goung trees of P.amurense Rupr.lateral branch elongation growth to fertilization was y=1.3375-0.6427x_(1)-0.9682x_(2)+2.1645 x_(3)+0.0061x_(2)1+0.0383x_(2)2+0.0370x_(2)3+0.0403x_(1) x_(2)-0.0348x_(1) x_(3)-0.1075x_(2) x_(3) and the optimum amount of N,P and K fertilization were 15.82~17.48 g/㎡,9.49~10.49 g/㎡,15.82~17.48 g/㎡.