氮肥用量对生菜产量的影响及生菜专用肥的研制

Study on the Nitrogen Fertilizer Amount to the Lactuca Sativa Yield and the Develoption of Special Purpose Fertilizer

本文研究了氮肥用量对生菜产量的影响 ,结果表明 :生菜产量 (Y ,Kg)与氮肥用量 (X ,Kg)之间呈二次曲线相关 ,相关方程为Y =1916 .311+ 72 .489X - 2 .46 7X2 (r =0 .96 8) ;理论上氮肥用量为 14.76Kg(纯N)时 ,生菜可获得最高产量 2 45 4.1Kg ,在此试验基础上 ,提出了生菜配方专用肥方案 ,其N P2 O5 K2 O含量为 2 9 4 11。

The experiment study the nitrogen fertilizer amount to the lactuca sativa yield.The result tell us the lactuca sativa yield had square currilinear correlation with the nitrogen fertilizer yield.when the nitrogen fertilizer amount is 14.76kg,the lactuca sativa yield is 2454.4kg/667m 2.On this experimention,we advance the scheme of lactuca sativa special purpose fertilizer.In this scheme,the percent of N P 2O 5 K 2O is 29 4 11.