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试验研究了 2种代用基质与施肥浓度对西姆比兰幼苗的影响 .结果表明 ,与新鲜水藓 (SP)相比 ,花生壳 +沙 (PH S =1 1)的总孔隙度和空气含量较高 ,持水量较低 .在 2种基质上的叶面积增长速率 (% )、叶绿素、植株鲜重和光合速率随施肥量的变化而变化 .当N素浓度为 2 2 2 75mg·L-1时 (折算成硫酸钾复合肥 1 4 9g·L-1)时 ,SP基质的西姆比兰的光合速率 (Pr)最大 .PH S基质的N素浓度为 180mg·L-1,即 1 2 3g·L-1硫酸钾复合肥时Pr最大 .PH S基质上每枝花箭上的小花数量以N P2 O5 K2 O =10 30 2 0处理为最大 ,N P2 O5 K2 O =0 2 3 2 9最小 ,各处理间的差异达显著水平 .SP基质上不同N P2 O5 K2 O比例处理也达显著水平 ,以N P2 O5 K2 O =10 30 2 0处理最大
The effects of two kinds of alternative substrates and fertilization on the seedlings of Simmental were studied.The results showed that the total porosity and air content of peanut shell + sand (PH S = 1 1) Higher and lower water holding capacity.The leaf area growth rate (%), chlorophyll, fresh weight and photosynthetic rate of the two substrates varied with the amount of fertilizer applied.When N concentration was 2 2 2 75 mg · L- (P <0.05), the photosynthetic rate (Pr) of the SP matrix was the highest at 1 h (converted to 1149 g · L-1 potassium sulfate compound fertilizer), and the N concentration of the PH S matrix was 180 mg · L -1 2 3g · L-1 potassium sulfate compound fertilizer Pr the largest.PH S substrate on each flower on the number of florets to N P2 O5 K2 O = 10 30 2 0 for the largest treatment, N P2 O5 K2 O = 0 2 3 2 9 and the difference between the treatments reached a significant level.The proportion of different N 2 O 5 O 2 O 2 in the SP matrix also reached a significant level and the treatment with N 2 O 5 K 2 O = 10 30 2 0 was the largest