腐肥试验中一些结果表明,施用腐肥的作物抗逆性较强,作物品质较好,其原因据分析与植株体钾素含量较高有关,这种现象是否单纯因为施用腐肥的作物根系比较发达,吸肥能力较强所致,还是因为有其它原因?围绕这一问题我们就煤类腐植酸对土壤钾素有效性的影响进行了研究。试验比较了不同类型腐植酸对不同土壤及不同含钾矿物速效钾的影响,并比较了腐植酸钾和氯化钾在土壤干湿交替情况下钾的固定。试验结果如下: Some results in the experiment of decomposing fertilizers show that the crops with rot manure have stronger stress resistance and better crop quality. The reason for this is due to the analysis of the higher content of potassium in the plants. Is this phenomenon simply because of the crop root system More developed, strong absorption capacity due to, or because of other reasons? Around this issue, we conducted a study on the impact of coal humic acid on soil potassium availability. The effects of different types of humic acid on the available potassium of different soils and different potassium-bearing minerals were compared. The potassium fixation of potassium humate and potassium chloride under alternating dry-wet conditions was compared. The test results are as follows: