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通过对Y两优66进行的6个不同施氮量的处理试验,试验研究出Y两优66生长发育特点,不同的生长阶段对氮肥的吸收能力。其中Y两优66在施氮量为N5(N 240 kg/hm~2),折合尿素521.7 kg/hm~2时产量最高为11 900 kg/hm~2。
Through the experiment of six different nitrogen application rates on Y Liangyou 66, the characteristics of Y Liangyou 66 growth and development and the absorption ability of nitrogen fertilizer in different growth stages were studied. Among them, the yield of Y Liangyou 66 was 11 900 kg / hm ~ 2 when N application rate was N 240 kg / hm ~ 2 and equivalent to urea 521.7 kg / hm ~ 2.