摘要
试验结果表明,氮肥是影响花椒苗生长发育的主要因素。合理施肥可使花椒苗体内氮含量提高,氮磷比值(N/P)保持较高水平。幼苗氮含量达到5.04％,N/P接近20.当磷肥和有机肥用量多时,氮含量和氮磷比值下降,幼苗生长不良。比较好的肥料用量配比为硫酸铵〔(NH_4)_2S0_4〕152g/m^2+过磷酸钙〔Ca(H_2PO_4)_2·H_2O+CaSO_4·2H_2O〕92g/m^2+有机肥10kg/m^2,明显提高了苗木产量和质量.
The expriments show that the nitrogen fertilizer is the most important factor for enhancing seedling growth of Chinese brickly ash (Zanthoxylum bungeanum). The adequate fertilization raises the N content in plants to 5.04% and higher N/P ratio(20). However, when the larger amount of calcium superphosphate and organic fertilizer are applied, the N content and N/P ratio decrease, and the seedlings grow worse. The better combination is ammonium sulphate 152 g/m2 + calcium superphosphate 92g/m2 + organic fertilizer lokg/m2. It significantly increases the output of high quality seedlings.
关键词
花椒
苗期
施肥
氮磷肥
含量
Zanthoxylum bungeanum seedling : adequate fertilization : N content and N/P ratio in plants
