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应用~(10)B固体径迹蚀刻技术,测定油菜叶片硼的分布表明,硼在叶片中移动很慢,喂饲~(10)B20天后的叶片与邻位叶的硼含量比:土培试验(缺硼土壤)为1.7-9.3,水培试验(供硼充足)为1.8-2.2;同一株油菜的叶片含硼量从基部向近顶部依次递减,土培试验为0.62-0.96ppm,水培试验为1.72-2.01ppm;同一张叶片的硼的分布是不均匀的,叶正面比叶反面硼含量高0.8ppm(?期)和1.8ppm(花期)(t=5.22和7.10),叶边缘比叶中部的硼含量高1.4-1.9ppm(t=20.00和16.24),叶尖端比叶中部的硼含量高1.8和1.9ppm(t=7.57和8.25)。这些特征与叶片缺硼症状相符合,它为油菜合理施硼提供了科学依据。
The application of ~ (10) B solid track etching technology to determine the distribution of boron in rape leaves showed that the movement of boron in the leaves was very slow. The ratio of boron content in leaves and adjacent leaves after feeding ~ (10) B20 days: Boron-deficient soil) was 1.7-9.3, and the hydroponic experiment (enough for boron) was 1.8-2.2. The content of boron in the leaves of the same strain decreased from the basal part to the top, and the soil culture test was 0.62-0.96ppm. Was 1.72-2.01ppm. The distribution of boron in the same leaf was non-uniform. The content of boron in leaf frontal surface was 0.8ppm (period) and 1.8ppm (flowering period) (t = 5.22 and 7.10) The boron content in the middle was 1.4-1.9 ppm (t = 20.00 and 16.24), and the tip was 1.8 and 1.9 ppm higher than the middle part of the leaf (t = 7.57 and 8.25). These characteristics are in line with the lack of boron leaf symptoms, which provides a scientific basis for rational application of boron rape.