活化腐植酸对小油菜产量及土壤理化性质的影响

Effects of Actived Humic Acid on Yeild of Spring Rape and the Physical-chemical Properties of Soil

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。

The potted experiments were conducted the effects of brown soil, alluvial soil and cinnamon soil used activat- ed humic acid on the growth, yield of spring rape, and the changes of siol physical and chemical properties. The results showed that compared with the control, the yield of spring rape was increased after using humic acids, especially in active humic acid. The yield of spring rape with applying an appropriate amount of activated humic acid was increased by 3.30% 425.98%, 7.83 % ~21.54% and 0.17%~41.60% compared with applying non-activated humic acid in brown soil, alluvial soil and cinnamon soil respectively. In addition, compared with applying non-activated humic acid, applyed an appropriate amount of activated humic acid could increase the leaf area; activate the phosphorus and potassium in soil, improved the ability of soil to keep and provide fertility; improve the water-stable aggregates of three kinds of soil.So the actived humic acid not only could increased the yield, promote the growth of spring rape, but also could improve the soil physical and chemical properties.