不同磷敏感棉花品种临界磷浓度稀释模型与磷营养诊断

庞保刚,曹楠,周治国,赵文青

Critical Phosphorus Concentration Dilution Model and Phosphorus Nutrition Diagnosis in Two Cotton Cultivars with Different Phosphorus Sensitivity

PANG BaoGang,CAO Nan,ZHOU ZhiGuo,ZHAO WenQing

表1 施磷量对棉花籽棉产量及产量构成的影响

Table 1 Effects of phosphorus application rate on cotton yield and yield components

品种 Variety	施磷量 Phosphorus application rate (kg P₂O₅·hm^-2)	2017			2018
品种 Variety	施磷量 Phosphorus application rate (kg P₂O₅·hm^-2)	铃数 Boll number (×10⁴·hm^-2)	铃重 Seedcotton weight per boll (g)	籽棉产量 Seedcotton yield (kg·hm^-2)	铃数 Boll number (×10⁴·hm^-2)	铃重 Seedcotton weight per boll (g)	籽棉产量 Seedcotton yield (kg·hm^-2)
豫早棉9110 Yuzaomian 9110	0	87.1±1.0b	4.0±0.0a	3459.5±33.6c	92.6±0.9d	4.2±0.1a	3869.3±55.4d
	50	93.5±1.0b	4.0±0.0a	3760.8±47.2b	98.4±1.3c	4.2±0.2a	4124.9±65.9c
	100	110.6±7.2a	4.0±0.1a	4459.0±79.8a	109.6±0.9b	4.3±0.0a	4681.6±58.6b
	150	115.2±4.0a	4.0±0.1a	4643.1±71.9a	113.9±2.8a	4.3±0.0a	4897.2±87.4a
	200	115.5±1.6a	4.1±0.1a	4691.7±53.7a	116.3±3.3a	4.3±0.0a	4991.9±93.5a
鲁54 Lu 54	0	90.0±2.1d	3.7±0.1a	3366.1±59.9d	91.4±1.5d	3.9±0.1a	3538.1±49.5d
	50	104.6±3.8c	3.8±0.1a	3924.9±75.6c	108.9±2.2c	3.9±0.2a	4257.7±58.5c
	100	115.5±4.0b	3.8±0.0a	4342.0±70.0b	120.3±2.9b	4.0±0.1a	4762.3±79.1b
	150	122.7±1.1a	3.8±0.0a	4686.3±84.4a	127.4±1.9a	4.0±0.0a	5107.6±72.4a
	200	123.5±2.5a	3.8±0.1a	4705.7±47.9a	126.0±1.6a	4.0±0.0a	5127.9±81.2a
方差分析ANOVA
品种Variety (V)		**	**	NS	**	**	NS
施磷量P rate		**	NS	**	**	NS	**
品种×施磷量V×P rate		**	NS	**	**	NS	**