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应用二次回归正交试验设计方法 ,研究了不同肥料配比及施肥量对银杏种子产量的影响。结果表明 :银杏采种园配方施肥能够显著增加种子产量 ,好的处理组合可比对照平均增产 6 9.1 % (常规施肥 )和 2 95 .5 % (不施肥 ) ;平均增加收入 1 4 4.34元·株 -1和 2 6 4元·株 -1。 1 4a生嫁接植株最佳施肥量N :1 .948kg·株 -1、P2 O5:0 6 85kg·株 -1、K2 O∶2 .0 38kg·株 -1,三者之比约为 3∶1∶3。N、P、K三元素对种子产量的肥料效应方程为 :Y =48 6 +3 9896 5 5X1+2 .370 0 6 3X2 +8.6 46 44 4X3 +0 .46 875X1X2 - 3.6 31 2 5X1X3 +0 .39375X2 X3 +1 8 995 99X12 - 3.5 1 2 6 2X22 +0 .1 936 83X3 2 。
The quadratic regression orthogonal experimental design method was used to study the effects of different fertilizer ratio and fertilizer on ginkgo seed yield. The results showed that: Ginkgo biloba seedling garden formula fertilization can significantly increase the seed yield, the good treatment combination can increase the average yield of 6 9.1% (conventional fertilization) and 2 95.5% (no fertilization) than the control; the average increase of income of 14.434 yuan · plant - 1 and 2 6 4 yuan · strain -1. The best fertilization rate of 1 4 a grafted plants was N: 1 .948 kg · plant -1, P2 O5: 0 6 85 kg · plant -1, K2 O: 2.038 kg · plant -1, the ratio of the three was about 3: 1: 3. The fertilizer effect equation of N, P and K on seed yield was Y = 48 6 +3 9896 5 5X1 +2 .370 0 6 3X2 +8.6 46 44 4X3 +0 .46 875X1X2 - 3.6 31 2 5X1X3 +0. 39375X2 X3 +1 8 995 99X12 - 3.5 1 2 6 2X22 +0 .1 936 83X3 2.