控释氮肥减施对春玉米产量、氮素吸收及转运的影响

尹彩侠, 李前, 孔丽丽, 秦裕波, 王蒙, 于雷, 刘春光, 王立春, 侯云鹏

Effect of Reduced Controlled-Release Nitrogen Fertilizer Application on Yield, Nitrogen Absorption and Transportation of Spring Maize

CaiXia YIN, Qian LI, LiLi KONG, YuBo QIN, Meng WANG, Lei YU, ChunGuang LIU, LiChun WANG, YunPeng HOU

表4 不同施氮处理植株氮素转运特征

Table 4 The characteristics of nitrogen transportation in maize plant under different N fertilization methods

年份 Year 处理 Treatment 转运量 Transportation amount (kg·hm-2) 转运率 Transportation rate (%) 对籽粒氮贡献率 Contribution rate to grain (%) 2013 CK 64.2c 52.0d 52.9c FP 112.4b 57.7c 65.4b OPT 122.9b 59.6bc 62.8b CRU1 142.3a 67.8a 75.2a CRU2 124.3b 62.6b 69.7ab 2014 CK 33.5c 43.7a 36.3b FP 47.8b 43.7a 44.1ab OPT 58.6a 47.8a 47.4a CRU1 56.2ab 43.8a 48.9a CRU2 59.6a 46.9a 49.2a