Abstract:

In order to study the growth, pigment content and photosynthetic rate of Pinus tabulaeformis Carr. under fertilization in early spring, the author tested under field conditions, set 4 fertilization treatments, that was FH1-FH4 nitrogen fertilizer were 15, 30, 45, 60 kg/hm2; amount of phosphate were 30, 30, 50, 50 kg/hm2; potash consumption were 40, 60, 60, 40 kg/hm2. A control, 3 times repeated. The results showed that: the seedling height of Pinus tabulaeformis Carr. increased with the amount of nitrogen, between FH2-FH4, was no significant difference, significantly higher than the control; dry matter accumulation of FH3 and FH4 was no significant difference, significantly higher than the control; chlorophyll a content of all fertilizer treatments was no significant difference, significantly higher than the control; chlorophyll b content of FH2-FH4 treatment was not significantly different, significantly higher than the control; carotenoid content of FH3 and FH4 treatment was no significant difference, significantly lower than the control; the total chlorophyll content were no significant differences in all fertilization treatments; photosynthetic rate of FH3 and FH4 treatment was no significant difference and significantly higher than other treatment and control. Comprehensive analysis, FH3 treatment as the best fertilizer ratio, FH4 and FH2 followed and then used FH3 treatment better in production process.