氮肥对非充分灌溉下棉花花铃期光合特性及产量的补偿作用

石洪亮,严青青,张巨松,李春艳,窦海涛

Compensation Effect of Nitrogen Fertilizer on Photosynthetic Characteristics and Yield during Cotton Flowering Boll-setting Stage under Non-sufficient Drip Irrigation

Hong-Liang SHI,Qing-Qing YAN,Ju-Song ZHANG,Chun-Yan LI,Hai-Tao DOU

表6 棉花产量构成因素及灌溉水生产力的方差分析

Table 6 Variance analysis of cotton yield components and drip irrigation water productivity

变异来源 Source of variation	单株结铃数BN		单铃重BW		籽棉产量SCY		灌溉水生产力IWP
变异来源 Source of variation	MS	F	MS	F	MS	F	MS	F
年份 Year (Y)	18.4	460.2^**	2.0	102.7^**	160534.9	2.8	0	2.6
灌溉 Drip irrigation (W)	0.2	4.1	0	0.8	146835.9	2.6	2.5	408.4^**
氮肥 N fertilizer (N)	24.2	201.5^**	6.2	106.7^**	32525954.1	190.2^**	3.2	176.6^**
Y×W	0	0	0	0.1	7971.4	0.1	0.0	0.0
Y×N	1.2	10.3^**	0.4	5.9^**	1984708.9	11.6^**	0.2	11.0^**
W×N	0.1	0.3	0	0.6	37744.6	0.2	0.1	5.8
Y×W×N	0	0.2	0	0.3	8937.6	0.1	0	0.4
误差 Error	1.3		0.6		1824487.0		0.2