Effects of Different Nitrogen Fertilizer Conditions on the Growth and Photosynthesis of Picea asperata Seedling
The effects of different nitrogen fertilizer conditions on the growth indexes such as plant height,ground diameter,crown width,net photosynthetic rate,transpiration rate,stomatal conductance and intercellular CO2 concentration of Picea asperata seed-ling were tested.The results showed that treatment 4 was the most economical and effective fertilization method.Under these condi-tions,the seedling height of Picea asperata was 43.77 cm,increased 19.04%compared with the control,the ground diameter was 12.19 mm,increased 20.58%compared with the control,and the crown width was 41.36 cm,increased 17.60%compared with the control.Net photosynthetic rate,transpiration rate and stomatal conductance were the highest,intercellular CO2 concentration was the lowest,and photosynthesis was the strongest.
water and fertilizer conditionsPicea asperataseedlinggrowth condition
NETL
NSTL
万方数据
维普
