生产实践业已证实,施用钾肥有益于水稻生长.尤在缺钾土壤上,增施钾肥,其效果更佳,在低温和冷烂的稻田中,施用钾之所以增产效益明显,这可能是施钾后改善了土壤氧化还原条件。据报道水培试验表明:矿质营养对水稻根际氧化还原过程有影响,缺钾时,培养液中氧化还原电位显著下降。但对施钾不同的土壤其氧化还原状况又怎样呢?目前详细报道甚少,因此本研究进行了2季盆栽试验及有关测 Production practice has confirmed that the application of potassium fertilizer is good for rice growth, especially in potassium-deficient soil, the application of potassium fertilizer is more effective. In low-temperature and cold-rotting paddy fields, the reason for increasing potassium yield is obvious. Potassium After improving soil redox conditions. It was reported that hydroponic experiments showed that mineral nutrition had an impact on the rhizosphere redox process of rice. When potassium was deficient, the redox potential of the culture medium decreased significantly. But what about the redox status of soils with different K fertilization? There are few reports about the soils at present, so this study conducted pot experiment in two seasons and related measurements