Table 1.

Effect of different Si rates and application time on winter wheat biomass P, Mg, K, and Ca content at harvest in 2017.

Si Application Treatment	Nutrient Content (%) of Winter Wheat Biomass
	P	K	Mg	Ca
0:0	0.3908 a	0.54 a	0.1245 a	0.0500 a
560:0	0.3790 a	0.52 ab	0.1193 a	0.0475 a
0:560	0.3890 a	0.52 ab	0.1238 a	0.0475 a
280:0	0.3855 a	0.51 ab	0.1253 a	0.0450 a
0:280	0.3825 a	0.50 b	0.1235 a	0.0450 a
140:0	0.3800 a	0.51 ab	0.1218 a	0.0475 a
0:140	0.3905 a	0.54 a	0.1223 a	0.0475 a

Means within each column followed by the same letter are not significantly different at p < 0.1, as determined by Duncan’s multiple range test.