氮肥运筹对弱筋小麦扬麦20产量和品质的影响

摘要

为探讨氮肥运筹对弱筋小麦扬麦20产量和品质的影响,指导扬麦20的大面积生产,研究了3种氮肥运筹模式下扬麦20的产量和品质表现。结果表明：1)在种植密度210万株·hm-2,总施氮量240 kg·hm-2,基肥∶拔节肥=5∶5运筹模式下,扬麦20产量最高、品质较好,实现了高产、优质的协调；2)氮肥运筹对扬麦20穗数和每穗粒数影响较大,对千粒重影响不大。%In order to investigate the effects of nitrogen strategies on grain yield and quality of weak-gluten wheat Yangmai 20,and guide the production of Yangmai 20 in large area,grain yield and quality of Yangmai 20 on three nitrogen strategies were studied.The results showed that the balance between high yield and superior quality can be realized under the appropriate management and cultivation mode such as the sowing density of 210×10 4 plants·hm-2 ,the ni-trogen rate of 240 kg·hm-2 and dressing ratio of 5∶5.Nitrogen strategies had a strong influence on spike number and grains number per spike of Yangmai 20,and had little influence on 1 000-grains weight.