小麦/玉米一体化增产条件下的周麦22需氮规律探究

Study on Zhoumai 22 Nitrogen Rules in Wheat/Maize Yield Condition of Integration

为探究周麦22在小麦/玉米一体化条件下,周年氮肥的用量及分配比例,试验研究周麦22在不同氮肥量及不同分配比例下的生长及产量变化规律。结果表明,随着全年氮肥施用量及氮肥由玉米向小麦分配率的增加,周麦22群体生理指标呈现增加趋势,而产量呈先增后降的变化规律;小麦/玉米一体化全年施氮量600 kg/hm2及5∶5的分配比例,有利于周麦22及全年高产。

To explore Zhoumai 22 in wheat/maize under the condition of integration,amount and distribution proportion of nitrogen fertilizer on the anniversary,Zhoumai 22 in different nitrogen fertilizer amount and distribution proportion of different growth and yield variation was studied. The results showed that with the increase of nitrogen application amount and the annual corn wheat allocation rate,physiological index of Zhaumai 22 population increased, but the yield increased first and then decreased. The application of anniversary amount of wheat/maize nitrogen fertilizer（urea）600 kg/hm2 and 5∶5 ratio were beneficial increased to the annual total yield and the yield of Zhoumai 22.