腐植酸复合肥对苹果生长及土壤肥力的影响

Effects of Humic Acid Compound Fertilizer on Apple Growth and Soil Fertility

利用苹果大田试验,以普通复合肥为对照,研究了添加不同量活化和未活化腐植酸复合肥对苹果产量、品质及土壤肥力的影响。结果表明,添加活化腐植酸150kg/t(AF150)处理苹果产量较普通复合肥处理(CK)提高12.33%,较添加未活化腐植酸150kg/t(NAF150)处理提高5.85%,活化腐植酸复合肥增产效果明显。综合分析各处理土壤供应氮磷钾水平及果树吸收量,腐植酸复合肥处理优于对照,且以添加活化腐植酸150kg/t(AF150)处理表现最好。各处理对果实品质的影响差异不显著。施用腐植酸复合肥可提高土壤有效磷和速效钾含量,但对氮素影响不显著。腐植酸复合肥能提高土壤脲酶活性,增加有机质含量,促进土壤氮素的转化,可将添加150kg/t活化腐植酸的复合肥应用于本地区苹果生产。

A field experiment of activated and non-activated humic acid compound fertilizers on apple was carried out to study effects on quality and yield of apple and soil fertility with the application of common compound fertilizers as control for comparison.The results showed that when activated humic acid 150kg/t was added,yield of the apple in Treatment AF150 was 12.33% higher than that in CK and 5.85% higher than that in Treatment NAF150 which non-activated humic acid 150kg/t was added respectively.From the analysis of each treatment of the supplyment and the absorbing capacity of N,P and K in the apple trees,the treatments which activated humic acid was added performed better,Treatment AF150 especially.No significant difference was observed on quality of fruits between each treatment.These humic acid compound fertilizers significantly increased the content of available P and K in the soil,but no significant difference to content of N in the soil.Besides,humic acid compound fertilizers also increased the activities of soil urease and content of organic matter,which promote the conversion of soil nitrogen nutrient.From the result of analysis,when the fertilizer added activated humic acid 150kg/t was used on apple trees in the area,it would be beneficial.