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近几年我们对天柱、施秉、三穗、丹寨、剑河、黄平、雷山、平坝、绥阳、六枝、遵义、湄潭、三都、思南、黎平、麻江、贵阳、榕江共18个县、市的一些缺硼耕地(按植株症状表现缺硼)的157个土样进行了有效硼测定,一般含量为0.01～1.7ppm,平均为0.31ppm。从含量水平分级标准看,在157个土样中,含硼量高的(1～2 ppm)为5个土样,占3.18％;含硼量中等的(0.5～1ppm)为11个土样,占7％;含硼量低的(0.25～0.5ppm)为56个土样,占35.7％;含硼量很低的(<0.25ppm)为85个土样,占54.1％。可见,从植株缺硼症状推断土壤缺硼是基本可靠的。虽然耕作土壤有效硼含量变动大,但与其母质、母岩有一定关联,因此就土壤类型及其母质、母岩关联性分述于后。
In recent years, we have conducted research on Tianzhu, Shibing, Sansui, Danzhai, Jianhe, Huangping, Leishan, Pingba, Suiyang, Liuzhi, Zunyi, Meitan, Sandu, Sinan, Liping, Majiang and Guiyang , 157 soil samples of some boron-deficient cultivated land (lack of boron according to plant symptoms) in 18 counties and cities of Rongjiang City were measured for available boron, with the content being generally 0.01-1.7ppm and the average being 0.31ppm. According to the content grading standards, five soil samples (3.18%) with high boron content (1-2 ppm) were found in 157 soil samples. Eleven soil samples with medium boron content (0.5-1 ppm) , Accounting for 7%; low content of boron (0.25 ~ 0.5ppm) 56 soil samples, accounting for 35.7%; low boron content (<0.25ppm) 85 soil samples, accounting for 54.1%. Can be seen from the boron deficiency symptoms inferred boron deficiency in the soil is basically reliable. Although available soil boron content changes, but with its parent material, parent rock is a certain correlation, so the soil type and parent material, parent rock associated with the later.