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首页> 美国卫生研究院文献>Scientific Reports >Exploring the potential of phyllosilicate minerals as potassium fertilizers using sodium tetraphenylboron and intensive cropping with perennial ryegrass
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Exploring the potential of phyllosilicate minerals as potassium fertilizers using sodium tetraphenylboron and intensive cropping with perennial ryegrass

机译：探索使用四苯硼酸钠和多年生黑麦草精耕细作的层状硅酸盐矿物作为钾肥的潜力

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摘要

In response to addressing potassium (K) deficiency in soil and decreasing agricultural production costs, the potential of K-bearing phyllosilicate minerals that can be directly used as an alternative K source has been investigated using sodium tetraphenylboron (NaTPB) extraction and an intensive cropping experiment. The results showed that the critical value of K-release rate and leaf K concentration was 3.30 g kg−1 h−1 and 30.64 g (kg dry matter)−1, respectively under the experimental conditions. According to this critical value, the maximum amount of released K that could be utilized by a plant with no K deficiency symptoms was from biotite (27.80 g kg−1) and vermiculite (5.58 g kg−1), followed by illite, smectite and muscovite with 2.76, 0.88 and 0.49 g kg−1, respectively. Ryegrass grown on phlogopite showed K deficiency symptoms during the overall growth period. It is concluded that biotite and vermiculite can be directly applied as a promising and sustainable alternative to the use of classical K fertilizers, illite can be utilized in combination with soluble K fertilizers, whereas muscovite, phlogopite and smectite may not be suitable for plant growth. Further field experiments are needed to assess the use of these phyllosilicate minerals as sources of K fertilizer.
机译：为了解决土壤中钾（K）的缺乏和降低农业生产成本的问题，已使用四苯硼酸钠（NaTPB）萃取和集约种植试验研究了可以直接用作替代钾源的含钾页硅酸盐矿物的潜力。 。结果表明，钾释放速率和叶片钾浓度的临界值为3.30 3.g kg −1 h -1 和30.64 g（kg干物质） -1 分别在实验条件下。根据此临界值，无钾缺乏症状的植物可以利用的最大钾释放量来自黑云母（27.80 g kg -1 ）和ver石（5.58 g kg ） -1 ），其次是伊利石，蒙脱石和白云母，分别为2.76、0.88和0.49μgkg -1 。在金云母上生长的黑麦草在整个生长期表现出钾缺乏症状。结论是，黑云母和ver石可以直接用作有前景和可持续的替代传统钾肥的使用，伊利石可以与可溶性钾肥结合使用，而白云母，金云母和蒙脱石可能不适合植物生长。需要进一步的田间试验，以评估这些层状硅酸盐矿物作为钾肥来源的用途。

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