包膜尿素不同配比减施对土壤无机氮含量及玉米氮素吸收的影响

冯小杰,战秀梅,王雪鑫,陈坤,彭靖,韩晓日

Effects of Soil Inorganic Nitrogen and Nitrogen Absorbing by Maize Under the Reduced Application of Coated Urea at Different Proportions

FENG XiaoJie,ZHAN XiuMei,WANG XueXin,CHEN Kun,PENG Jing,HAN XiaoRi

表3 不同氮肥处理对春玉米产量和氮素利用效率的影响

Table 3 Effect of different fertilizer treatments on yield and N fertilizer use efficiency of spring maize

试验地点 Experimental sites 处理 Treatment 产量 Yield （kg·hm-2） 增产率 Increased rate (%) 氮素表观利用率 REN (%) 氮肥农学 效率 NAE (kg·kg-1) 比CK增产 Compared to CK 比CK1增产 Compared to CK1 沈阳 CK0 6855d --- --- --- --- Shenyang CK 10042ab --- 7.9 31.6e 7.7 abc CK1 9307c -7.32 --- 31.2f 5.2 d T0 9669abc -3.72 3.89 32.5d 6.9 bcd T1 9912ab -1.29 6.5 35.8b 7.7 abc T2 10250a 2.06 10.12 37.4a 9.5 a T3 10068ab 0.27 8.19 33.6c 8.7 ab 海城 CK0 7300e --- --- --- --- Haicheng CK 11850d --- 19.70 29.1e 21.0b CK1 9900d -16.46 --- 30.3d 13.3d T0 10650c -10.13 7.58 31.4c 17.2c T1 11325b -4.43 14.39 34.5b 20.6b T2 12450a 5.06 25.76 36.3a 26.4a