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本试验以金云母作为植物的唯一钾源,研究了缺磷与正常供磷条件下肥田萝卜、油菜对矿物结构钾的利用。结果表明,缺磷条件下两种植物每盆的吸钾总量( 肥田萝卜14-96mg ,油菜12-88mg) 以及矿物钾的净释放量( 肥田萝卜6-22mg ,油菜4-32mg) 均显著高于正常供磷处理的植物吸钾总量( 肥田萝卜11-90mg,油菜9-57mg) 和矿物钾净释放量( 肥田萝卜3-72mg,油菜3-07mg) 。同时,对根际金云母进行X光衍射扫描,结果发现两种处理的肥田萝卜和油菜的根际金云母均出现了明显的蛭石化现象,其中缺磷条件下两种植物引起的蛭石化作用较正常供磷的处理更显著。
In this experiment, phlogopite was used as the sole potassium source in plants, and the utilization of mineral structure potassium in the fields of fertilizer and rape under phosphorus deficiency and normal phosphorus supply was studied. The results showed that the total potassium uptake per pot (14-96 mg of fattened turnip and 12-88mg of canola) and net release of mineral potassium (6-22mg of fattened turnip and 4-32mg of canola) The total amount of potassium uptake by plants that are higher than normal phosphorus supply (11-90 mg of fattened radish and 9-57mg of rapeseed) and the net release of mineral potassium (3-72mg of fattened radish and 3-07mg of canola). At the same time, scanning X-ray diffraction of phlogopite on rhizosphere showed that there were obvious vermiculites in the rhizosphere of both radish and rapeseed, and the leaching of vermiculite The effect of phosphorus than the normal treatment more pronounced.