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以牛厩肥、猪厩肥、麦秸和钾化肥为供钾源进行土培和生物试验,结果表明,麦秸对土壤的供钾能力及对作物的有效性均高于钾化肥,两种厩肥的供钾能力及钾素效果略低于钾化肥。随着厩肥和麦秸施用量的增加,土壤速效钾和缓效钾基本是成比例地增加,钾素有效转化率并未因施用量提高而明显降低。随着施用量的增加,玉米幼苗吸钾量呈增加趋势。
The soil manure and pig manure, wheat straw and potassium fertilizer were used as potash sources for soil culture and biological tests. The results showed that wheat straw supplied potassium and its availability to the soil were higher than those of potassium fertilizer and potassium manure Potassium and potassium effect is slightly lower than potassium fertilizer. With the increase of manure and wheat straw application, soil available potassium and slowly available potassium basically increased proportionally, and the effective conversion rate of potassium did not decrease obviously due to the increase of application rate. With the increase of the application rate, the potassium uptake by maize seedlings showed an increasing trend.