我国主要苹果产区,不论渤海湾、中部平原、西北黄土高原和西南黄、红壤地带,都曾发现程度不同的缺硼现象。推其原因可能有两方面:(1)土壤因素。土壤中的硼大部分存在于土壤矿物电气石和土壤有机质之中,然而土壤有效硼的浓度则与土壤有机质呈正相关。我国苹果园土壤一般有机质含 China’s major apple producing areas, regardless of the Bohai Bay, the Central Plains, the Northwest Loess Plateau and Southwest Yellow and red soil areas, have found a different degree of boron deficiency. There are two possible reasons for this push: (1) soil factors. Most of the soil boron exists in soil mineral tourmaline and soil organic matter, while soil available boron concentration is positively correlated with soil organic matter. China’s apple orchard soil containing organic matter in general