施氮水平对小麦灌浆特性、产量及品质的影响

Effects of Nitrogen Levels on Filling Trait,Yield and Quality of the wheat

以百农矮抗58为材料,研究施氮水平对小麦灌浆特性、产量及品质的影响。结果表明,千粒重潜力值k、达到最大灌浆高峰的时间tmax、最大灌浆速率vmax及快增期持续时间tma′x均随着施氮量的增加总体上呈现先增后减的趋势,小麦产量亦呈先增后减的趋势,而主要品质指标则呈先增加后趋于稳定的趋势。考虑到产量和品质的综合效益,百农矮抗58的合理施氮量为每公顷纯氮300～360 kg。

The experiment studied the effects of nitrogen levels on filling trait, yield and quality of Bainong AK 58. The resuits showed that the important parameters of filling such as k,tmax,vmax and tmax, increased with improving nitrogen application on low levels,but reduced on the higer nitrogen levels. The trend of yield was similar to the important parameters of filling, but the important parameters of quality were on the increase with improving nitrogen application, and became steady finally. The prime amount of nitrogen application was 300-360kg·hm^-2.