施肥对台湾青枣营养生长的影响

Effects of fertilization on Zizyphus mauritiana Lam.growth

摘要: 采用正交试验设计L₁₆(4⁵)对台湾青枣进行塑料大棚施肥试验,观测其在一个单一生长季节内生长量(包括地径、一次分枝粗和冠幅)的变化,以确定N、P、K肥及其配比对台湾青枣营养生长的影响.结果表明:台湾青枣在植株生长期间,N肥对其生长影响作用最大,其次是K肥,最后是P肥;台湾青枣生长量达到最大的施肥量是m(N)135 g、m(P)9.90 g、m(K)93.60 g,即在台湾青枣一个单一生长季节里,N、P、K最佳施肥配比为m(N)∶m(P₂O₅)∶m(K₂O)=1∶0.17∶0.84.这对于台湾青枣在北方开始栽培、幼树生长及营养生长阶段具有极为重要的参考价值.

Abstract: The plastic shed fertilization experiment with an orthogonal experimental design L₁₆(4⁵) was conducted to study the effects of N,P,K and their recipe on the growth of Zizyphus mauritiana Lam..Ground diameter,the first branch width and crown width were selected as the growth indices.Results showed that in the growth period of Z.mauritiana,the effects of fertilization were in the order of N>K>P,and the optimal recipe was m(N) 135 g,m(P) 9.90 g, m(K) 93.60 g,ie m(N)∶m(P₂O₅)∶m(K₂O)=1∶0.17∶0.84,which provides a scientific basis for the cultivation,seedling growth and nutritious growth of Z.mauritiana in north China.