基于甘蔗产量与土壤磷素平衡的磷肥施用量研究

区惠平,周柳强,黄金生,朱晓晖,曾艳,彭嘉宇,谢如林,谭宏伟,李忠宁,沈小微,刘昔辉

Research on Phosphorus Application Rate Based on Sugarcane Yield and Phosphorus Balance in Soil

OU HuiPing,ZHOU LiuQiang,HUANG JinSheng,ZHU XiaoHui,ZENG Yan,PENG JiaYu,XIE RuLin,TAN HongWei,LI ZhongNing,SHEN XiaoWei,LIU XiHui

表1 不同施磷量对甘蔗产量的影响

Table 1 Effect of phosphorus application rate on sugarcane yield

年份 Year	处理 Treatment	产量 Yield (t·hm^-2)			优化施磷量 P application rate (kg P₂O₅·hm^-2)
年份 Year	处理 Treatment	蔗茎 Cane	蔗叶 Leaf	地上部 Aerial part	蔗茎 Cane	蔗叶 Leaf	地上部 Aerial part	蔗茎 Cane	蔗叶 Leaf	地上部 Aerial part
2014	P0	92.2±1.6 b	21.0±0.5 a	113.2±2.1b	150	150	150	98.8	21.1	119.9
	P1	95.0±1.6 ab	20.9±0.2 a	115.9±1.7ab
	P2	99.9±2.3 a	21.4±0.5 a	121.3±2.0 a
	P3	99.1±2.5 ab	21.0±0.3 a	120.1±2.8 ab
	P4	98.5±1.6 ab	20.9±0.7 a	119.4±2.2 ab
2015	P0	89.5±2.7 b	20.6± 0.8 b	110.1±3.5 b	109.9	116.6	110.6	106.4	22.6	129.0
	P1	101.1±5.7 ab	21.9±0.2 ab	123.0±5.8 ab
	P2	105.6±3.1 a	23.0±0.3 a	128.6±3.5 a
	P3	108.6±0.6 a	22.9±0.7 a	131.5±0.5 a
	P4	105.1±3.8 a	21.9±0.8 ab	127.0±4.1 a
2016	P0	88.3±1.1 b	16.9±0.4 c	105.2±1.4 c	160.8	176.7	166.3	102.6	25.1	127.7
	P1	94.0±2.7 ab	19.2±0.1 bc	113.2±2.6 bc
	P2	102.0±1.2 a	24.3±1.3 ab	126.3±2.5 ab
	P3	102.3±5.1 a	26.9±1.6 a	129.2±6.5 a
	P4	102.9±4.1 a	23.3±2.5 ab	126.3±6.6 ab
平均 Average					140.2	147.8	142.3	102.6	22.9	125.5