有机无机肥配施对太湖流域麦田氨挥发损失的影响  

作　　者：张敏 蔡丹丹 

机构地区：[1]洛阳师范学院<生命科学学院>

出　　处：《科技视界》2020年第26期190-192,共3页Science & Technology Vision

摘　　要：本试验以太湖流域麦田为试验材料,研究有机无机肥配施条件下小麦不同生育期的氨挥发损失,旨在阐明不同施肥方式对太湖地区麦田氨挥发损失的影响,以期为减少氮肥损失和提高氮肥利用率提供一定的理论支撑。试验共设置4个处理:空白处理(CK),单施有机肥处理(M),常规处理(CT,210 kg N ha-1)和有机无机肥配施处理(CM)。试验结果表明,不同施肥处理的氨挥发总损失量为1.42~9.55 kg N ha-1,是太湖地区小麦田重要的氮素损失途径。麦田氨挥发损失主要发生在基肥和第二次追肥期,主要是因为第一次追肥时期温度较低,不利于氨挥发的产生。与CT处理相比,CM处理的氨挥发损失总量降低1.67 kg N ha-1,不过二者之间无显著差异,但配施有机肥显著降低了第二次追肥期的氨挥发损失。In this experiment,wheat fields were used as test material to study the ammonia loss at different growth stages under organic fertilizer combined with chemical fertilizer,aiming to clarity the effect of different fertilization patterns on NH3 loss in Taihu Lake region,so as to provide certain theoretical support for reducing nitrogen fertilizer loss and improving nitrogen fertilizer utilization rate.There are four treatments:control treatment(CK),organic fertilizer(M),conventional treatment(CT)and organic N combined with chemical N(CM).The results showed that the total NH3 loss under different treatments was 1.42-9.55 kg N ha-1,which was an important method of N loss in wheat season.NH3 loss mainly occurred during basal fertilizer and the second topdressing period,and the lower temperature during the first topdressing period explained the lower NH3 loss.Compared to CT,NH3 loss in CM decreased by 1.67 kg N ha-1,but there was no significant difference of NH3 loss between them.However,organic fertilizer significantly reduced NH3 loss during the second topdressing period.

关 键 词：有机肥 冬小麦 氨挥发 太湖流域 

分 类 号：S512.1[农业科学—作物学]