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5 单株棉花吐絮期地上部光合产物积累与分配的比较

Table 5 Comparison of accumulation and distribution of photosynthate in overground of cotton at open bolling

灌溉量 Drip irrigation amount	氮肥处理 N treatment	2015			2016
灌溉量 Drip irrigation amount	氮肥处理 N treatment	光合物质积累 PA (g)	营养器官分配 VOA (%)	生殖器官分配 ROA (%)	光合物质积累 PA (g)	营养器官分配 VOA (%)	生殖器官分配 ROA (%)
2800 m³ hm^-2	N0	52.3 h	72.1 a	27.9 h	42.2 h	63.9 a	36.1 h
	N150	58.0 f	68.2 c	31.8 f	49.1 g	60.6 c	39.4 f
	N300	84.7 d	60.9 g	39.1 b	76.0 c	52.7 g	47.3 b
	N450	85.9 c	64.6 e	35.4 d	74.7 d	55.2 e	44.8 d
3800 m³ hm^-2	N0	57.4 g	70.2 b	29.8 g	50.4 f	61.7 b	38.3 g
	N150	63.0 e	66.8 d	33.2 e	56.6 e	59.1 d	40.9 e
	N300	87.9 b	59.6 h	40.4 a	79.9 a	51.9 h	48.1 a
	N450	91.8 a	64.3 f	35.7 c	78.4 b	54.6 f	45.4 c