水是植物体的重要组成部分,它参与植物一切组织细胞的构成和生命活动。而我省冬春雨量偏少,远远满足不了果树生长的需要,因此,春灌就显得尤为必要。 从早春土壤解冻开始到果树开花前后为最佳春灌时期。灌水次数,要根据土壤湿度(即土壤含水量)和土壤保水能力而定,一般 Water is an important part of the plant body, it is involved in the organization of all tissues and life of plant cells. However, the rainfall in winter and spring in our province is less than normal, far from meeting the needs of fruit tree growth. Therefore, spring irrigation is especially necessary. From the early spring soil thawing began to flowering fruit trees before and after the best spring irrigation period. Irrigation frequency, according to soil moisture (soil moisture) and soil water retention capacity may be, in general