灌浆结实期半深水灌溉对水稻产量、干物质转运及籽粒灌浆的影响

郭威, 孙冬, 闫治霖, 丁蓓, 杜跃辰, 吴慧扬, 徐强, 窦志, 高辉

Influence of Semi-Deep Water Irrigation during Grain-Filling Period on Rice Yield, Dry Matter Transportation and Grain-Filling

Guo Wei, Sun Dong, Yan Zhilin, Ding Bei, Du Yuechen, Wu Huiyang, Xu Qiang, Dou Zhi, Gao Hui

表2 结实期不同灌溉深度对水稻产量及收获指数的影响

Table 2 Effects of different irrigation depths on rice yield and harvest index during grain filling stage

品种 Variety	处理 Treatment	单位面积有效穗数 Effective panicles per unit area (×10⁴/ hm²)	每穗颖花数 Spikelets per panicle	结实率 Seed-setting rate (%)	千粒重 1000-grain weight (g)	理论产量 Theoretical yield (t/hm²)	实际产量 Actual yield (t/hm²)	收获指数 Harvest index (%)
南粳5718 NG5718	CK	316.30a	168.86a	91.91a	26.44a	12.25a	12.19a	58.71a
南粳5718 NG5718	WD20	311.60a	159.92ab	88.60b	25.54b	11.02b	10.98b	56.93ab
	WD40	309.13a	153.73b	83.22c	25.18c	9.41c	9.31c	52.86b
徽两优898 HLY898	CK	234.64a	242.98a	88.73a	25.80a	12.08a	12.39a	60.33a
徽两优898 HLY898	WD20	232.22a	234.78ab	84.19b	24.42b	10.42b	10.63b	58.16ab
	WD40	234.96a	223.82b	80.07c	23.87c	9.12c	9.05c	53.58b
方差分析 Analysis of variance	V	2453.09^**	2723.53^**	90.91^**	46.41^**	8.63^*	28.82^**	23.28^**
方差分析 Analysis of variance	ID	2.16	82.01^**	178.20^**	39.41^**	186.48^**	33.34^**	104.70^**
	V×ID	1.96	2.99	1.21	1.71	1.09	0.05	2.27