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对主要类型土壤1757个耕层土样速效硼含量进行相关研究。结果表明,成土母质硼的丰度及含硼矿物的稳定性是土壤速效硼含量的决定因素,土类间的相关系数(r)表现为棕壤0.71>水稻土0.586>褐土0.42=潮土0.42>砂姜黑土0.37。土壤速效硼含量与常年降雨量呈显著或极显著负相关;与土壤有机质含量均呈极显著正相关。硼的吸附量与土壤pH值、土壤物理性粘粒含量均呈线性正相关,而土壤碳酸钙对硼的吸附则无明显的影响。
The correlation analysis of available boron content in 1757 topsoil samples of main types of soils was carried out. The results showed that the abundance of boron in parent material and the stability of boron-bearing minerals were the determinants of available boron content in soil. The correlation coefficient (r) between soil types was brown soil 0.71> paddy soil 0.586 > cinnamon soil 0.42 = tidal soil 0.42> sand lime black soil. Soil available boron content and annual rainfall showed a significant or very significant negative correlation; and soil organic matter content showed a very significant positive correlation. The adsorption amount of boron has a linear positive correlation with soil pH value and physical clay content, while the soil calcium carbonate has no obvious effect on boron adsorption.