Effects of Different Fertilization and Watering Treatments on the Growth of Young Pinus Tabulaeformis Forests
In Liujia Village of Pingshun County at Changzhi City of Shanxi Province,5-year-old Pinus tabulaeformis young forest with consistent growth was selected for watering and fertilization experiments to study the effects of different fertiliza-tion and watering treatments on the growth of young Pinus tabulaeformis forests.The results showed that compared with the control,the height growth and diameter growth of young Pinus tabulaeformis forests were significantly improved under differ-ent fertilization treatments.Among them,the best fertilization combination was NPK60.The effects of nitrogen and potassi-um fertilizers on seedling growth were significant,while the effects of phosphorus fertilizer on seedling growth were not sig-nificant.The mixed fertilization treatment had a greater impact on the growth of seedlings than the single fertilization treat-ment.Different watering treatments had a promoting effect on the growth of tree height and ground diameter in young Pinus tabulaeformis forests.The impact on growth was watering 3 times with 4 L>watering 3 times with 2 L>watering 1 time with 12 L>watering 1 time with 6 L>no watering.Under the same watering method,the larger the amount of water poured,the more favorable it was for the growth of Pinus tabulaeformis.Under the same water amount,the effect of multiple pours was better than that of a single pour.