控失尿素减施及不同配比对夏玉米产量及氮肥效率的影响

张倩, 韩本高, 张博, 盛开, 李岚涛, 王宜伦

Reduced application and different combined applications of loss-control urea on summer maize yield and fertilizer efficiency improvement

ZHANG Qian, HAN Ben-Gao, ZHANG Bo, SHENG Kai, LI Lan-Tao, WANG Yi-Lun

图3 不同施肥处理夏玉米植株氮、磷和钾素积累量 处理同表2。不同小写字母表示处理(CK、CF、CL、CL10、CL20)间差异显著(P < 0.05); 不同大写字母表示处理(CF、CL、CL7:3、CL5:5、CL3:7)间差异显著(P < 0.05)。籽粒、秸秆干物重方差分析分别在不同颜色的柱中标注, 总干物重方差分析标注在柱上方。

Fig. 3 N, P, and K accumulation of summer maize under different fertilizer treatments Treatments are the same as those given in Table 2. Different lowercase letters indicate significant differences at P < 0.05 among CK, CF, CL, CL10, and CL20 treatments. Different capital letters indicate significant differences at P < 0.05 among CF, CL, CL7:3, CL5:5, and CL3:7 treatments. Analysis of variances of the dry weight of grain and straw are marked in columns with different colors and those of the total dry weight are marked above the column.