施用腐殖酸肥料对猕猴桃果实品质和产量的影响

Effect of Applying Humic Acid Fertilizer on Fruit Quality and Yield of Kiwifruit

为探求腐殖酸叶面肥在猕猴桃果树上施用的最佳质量浓度,以‘徐香’猕猴桃为试验材料,研究不同质量浓度腐殖酸叶面肥对猕猴桃果实品质和产量的影响。设置5个质量浓度梯度处理:处理1(腐殖酸0g/L),处理2(腐殖酸0.15g/L),处理3(腐殖酸0.3g/L),处理4(腐殖酸0.45g/L),处理5(腐殖酸0.6g/L),每个处理3个重复。于2017年猕猴桃坐果后10d、20d、30d共喷施3次,每次喷施量为200L/667m^2。结果表明:腐殖酸质量浓度过高或过低均不能使果实产量与品质达到最优,综合产量与品质,处理3质量浓度最优。回归拟合结果为产量和品质各指标与腐殖酸质量浓度均存在显著的二次相关关系,产量最高时腐殖酸质量浓度为0.349g/L,果实品质各指标最优时腐殖酸质量浓度均为0.3～0.4g/L。

To explore the optimal mass concentration of humic acid foliar fertilizer applied on kiwifruit fruit trees,'Xuxiang'kiwifruit was used as an experimental material to study the effects of different mass concentrations of humic acid foliar fertilizers on fruit quality and the yield of kiwifruit.And there are 5 mass concentration gradients were set,treatment 1(humic acid 0 g/L),treatment 2(humic acid 0.15 g/L),treatment 3(humic acid 0.3 g/L),treatment 4(humic acid 0.45 g/L),treatment 5(humic acid 0.6 g/L),3 replicates per treatment.Kiwi fruit was sprayed 3 times on days 10,20 and 30 after fruit set,and the amount of spray was 200 L/667 m^2.The result showed that no matter how much the mass concentration of humic acid is,the yield and quality of fruit cannot be optimized.To sum it up,regarding its yield and quality,the mass concentration of treatment 3 is the optimal.The result of regression fitting showed that there was a significant quadratic correlation between yield,quality indicators and humic acid mass concentration.When the yield reaches the top,the humic acid mass concentration was 0.349 g/L,and the humic acid mass concentration was optimal in all indicators of fruit quality.0.3-0.4 g/L.