氮钾配施对油菜产量及氮素利用的影响

李静,闫金垚,胡文诗,李小坤,丛日环,任涛,鲁剑巍

Effects of combined application of nitrogen and potassium on seed yield and nitrogen utilization of winter oilseed rape (Brassica napus L.)

Jing LI,Jin-Yao YAN,Wen-Shi HU,Xiao-Kun LI,Ri-Huan CONG,Tao REN,Jian-Wei LU

图2 氮钾肥配施对2016-2017和2017-2018年冬油菜氮素利用效率的影响 标以不同小写字母柱值在相同年份同一施氮量下不同钾处理间差异达0.05显著水平; *表示P < 0.05, **表示P < 0.01; ns表示无显著差异。处理同表1。

Fig. 2 Effect of combined application of N and K fertilizer application rates on N use efficiency of winter oilseed rape during 2016-2017 and 2017-2018 growing season Bar superscripted by different letters under the same N treatment in the same year are significantly different between different K fertilizer treatments by LSR test (P < 0.05); * and ** represent P < 0.05 and P < 0.01, respectively; ns means no significant difference. Treatments are the same as those given in Table 1.