Effects of Biological Preparations on Photosynthetic Characteristics and Nutrient Contents of Mongolian Pine Seedlings in Sandy Soil
An experiment was conducted to study the effect of Pt ectomycorrhizal fungi, ABT root-growing powder, HRC water-absorbing agent and FCS high-yield powder on the photosynthetic characteristics and nutrient contents of 2-year-old Mongolian pine (Pinm syhalris var. mongolica) potted seedlings. Results showed that Pt3 and ABT significantly increased the whole plant biomass, underground and aboveground biomass as well as the ratio of root to shoot of seedlings compared with those of the control, which could promote the absorption of main nutrients. Contents of N, P and K in the needle of seedlings treated with Pt3 and ABT were significandy higher than those of the control seedlings, which promoted the balance of different nutrients and provided the basic substances for improving photosynthetic ability. Pt3 and ABT greatly improved the physiological mechanism of seedlings and increased photosynthetic rate and transpiration rate. Therefore, Pt3 and ABT could improve the main physiological functions of Mongolian pine seedlings, which are beneficial to increase survival rate of seedlings in arid and semi-arid sandy lands.
Biological preparationsPinus syhestris var. mongolicaPhotosynthetic characteristicsNutrient contents
NETL
NSTL
万方数据
维普
