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采用盆栽试验研究了棕壤、潮土、褐土等3种土壤施用活化腐植酸对小油菜生长、产量的影响及其理化性质的变化。结果表明:施用腐植酸能够增加小油菜的产量,以活化腐植酸处理较佳。对于棕壤、潮土、褐土3种土壤,施用适量活化腐植酸较未活化腐植酸分别增产3.30%~25.98%、7.83%~21.54%、0.17%~41.60%。此外,相比未活化腐植酸,施用适量活化腐植酸能增加小油菜叶面积;能活化土壤磷素、钾素,提高土壤保肥供肥能力;能提高3种土壤水稳性团聚体。因此,施用活化腐植酸既可促进小油菜生长,增加产量,还可改良土壤理化性状。
Pot experiments were conducted to study the effects of activated humic acid on the growth and yield of ramie (Rapeseed ramie L.) and the changes of its physicochemical properties in three kinds of soils, brown soil, alluvial soil and cinnamon soil. The results showed that humic acid could increase the yield of rapeseed and better treatment with activated humic acid. The amount of activated humic acid increased by 3.30% -25.98%, 7.83% -21.54% and 0.17% -41.60% respectively compared with unactivated humic acid for brown soil, alluvial soil and cinnamon soil. In addition, compared with the non-activated humic acid, the application of the appropriate amount of activated humic acid can increase the leaf area of rapeseed; can activate soil phosphorus and potassium, improve soil fertility and fertilizer supply; can improve soil water stable aggregates. Therefore, the application of activated humic acid can promote rape growth, increase yield, but also improve soil physical and chemical properties.