1.浇水。浇水要掌握重点,一是适时浇好解冻水,时间在土壤即将解冻、树木发芽前,是防止植物春季“抽条”的关键。二是生长期浇水。华北地区一般在4-9月上旬,这段时间是树木生命活动最旺盛的时期,也是树木生长最需要水分的时期。9月中旬以后对浇水要合理控制,促其新梢木质化,防止徒长,安全过冬。三是浇封冻水。封冻水要适时浇足,适时 Watering Watering to grasp the key, first, timely pouring thawed water, thaw time in the soil is about to thaw, before the trees are sprouting, is to prevent the spring plant “pumping ” key. Second, the growth of watering. North China is generally in the early April to September, this period of time is the most active tree life activities, but also the most tree-growing water needs of the period. After mid-September to be rationally controlled watering, promote the lush new shoots to prevent leggy, safe winter. Third, pour frozen water. Frozen water should be timely pour enough, timely