施氮量对高粱产量、品质及氮利用效率的影响

曹晓燕, 武爱莲, 王劲松, 董二伟, 焦晓燕

Effects of Nitrogen Fertilization on Yield, Quality and Nitrogen Utilization Efficiency of Sorghum

Cao Xiaoyan, Wu Ailian, Wang Jinsong, Dong Erwei, Jiao Xiaoyan

表3 施氮量对叶鞘中硝态氮含量的影响

Table 3 Effects of N fertilization on NO3—N concentration in leaf sheaths mg/kg

处理 Treatment 挑旗期 Flag leaf stage 穗花期 Anthesis stage 灌浆期 Grain filling stage N0 46.3±4.7c 27.5±6.1c 56.3±8.8b N1 34.5±0.5c 25.0±2.0c 29.6±1.3b N2 63.2±29.8c 36.8±1.0c 30.3±0.7b N3 1903.3±322.0bc 756.3±62.7b 45.9±3.7b N4 2878.5±656.2ab 3772.6±602.7a 2800.0±271.4a N5 4197.4±828.5a 4343.2±310.5a 6804.4±119.6a