减源对不同密度春玉米开花后干物质及氮、磷、钾积累转运的影响

曹玉军,吴杨,刘志铭,崔红,吕艳杰,姚凡云,魏雯雯,王永军

Effects of Sources Reduction on Accumulation and Remobilization of Dry Matter and Nitrogen, Phosphors and Potassium of Spring Maize Under Different Densities After Flowering

YuJun CAO,Yang WU,ZhiMing LIU,Hong CUI,YanJie LÜ,FanYun YAO,WenWen WEI,YongJun WANG

表4 不同减源处理叶片和茎鞘氮、磷、钾养分转运率

Table 4 N, P and K nutrient remobilization efficiency in leaves and stem-sheath under different treatments

年份 Year	种植密度 Planting density (×10⁴plants/hm²)	处理 Treatment	氮N (%)		磷P (%)		钾K (%)
年份 Year	种植密度 Planting density (×10⁴plants/hm²)	处理 Treatment	叶片 Leaf	茎鞘 Stem-sheath	叶片 Leaf	茎鞘 Stem-sheath	叶片 Leaf	茎鞘 Stem-sheath
2014	6.0	CK	42.9	45.5	42.1	53.6	61.2	24.5
		T1	53.8	54.9	47.3	63.2	70.4	29.9
		T2	51.1	53.4	46.3	59.3	66.8	26.8
		T3	46.5	49.5	44.5	54.8	64.6	27.3
	9.0	CK	43.8	41.5	41.3	46.9	61.4	25.9
		T1	52.2	50.1	44.8	55.6	66.8	32.3
		T2	46.5	48.9	43.7	54.0	65.3	31.2
		T3	45.6	45.1	44.3	49.2	63.4	26.9
2015	6.0	CK	43.9	46.9	57.3	54.2	59.6	24.7
		T1	55.7	53.5	62.3	60.5	71.7	30.3
		T2	48.5	53.9	59.6	58.6	67.1	27.5
		T3	45.7	50.6	58.5	56.8	66.4	25.9
	9.0	CK	45.2	43.9	46.7	46.1	61.6	19.4
		T1	51.7	50.3	53.5	52.9	68.4	26.0
		T2	50.8	50.6	51.0	50.0	64.8	26.0
		T3	48.4	45.4	49.8	47.2	62.7	21.9
ANOVA		年份 Year	ns	ns	ns	ns	ns	*
		密度 Density	ns	**	**	**	ns	*
		处理 Treatment	**	**	ns	**	**	**