In Shandong poplar annual management cycle, fertilizer and water management should be the focus in the early growth stage, the North China Plain is in the period of 4 ~ June drought, water shortage is restricting factors of the growth of poplar. Therefore, to fight for the Shandong rapid growth of poplar, strengthen management plays an important role in early growth stage.
Shandong poplar timber forest irrigation occupies an important position in the high yield cultivation. Irrigation benefit in timber production is very high. According to the experiment of irrigation investment rate of return of 1:5 ~ 15. Compared with no irrigation irrigation stand, can increase the height of 17.2% ~ 24.6%, 10.7% ~ 22.1% increase in diameter at breast height, volume production 20%. 42.6%. Production of 1m wood fast-growing Yang Mei research, approximately is 1300 ~ 1800m of the leaf area, the water can improve the expansion of leaf area, photosynthetic rate.