Manual Transplanting Late Rice ‘Guangliangyou 7217’ and ‘Tianyouhuazhan’: Effects of Seedling Ages on Yield and Growth Characteristics

doi:10.11924/j.issn.1000-6850.casb19010087

Abstract

Abstract:

To clarify the elasticity of seedling age of two indica hybrid rice cultivars ‘Guangliangyou 7217’ and ‘Tianyouhuazhan’, the effect of different seedling ages (25, 30, 35, 40 and 45 days) treatment on yield, seedling quality, growth process, tillering ability and biomass of late rice were studied by wet seedling cultivation and manual transplanting. The results showed that the yield of the two cultivars increased first and then decreased with the increase of seedling age, and the yield under the 30-day-old seedling age treatment was the highest, increased by 15.8% and 8.2%, respectively, compared with the lowest yield of each cultivar under seedling age treatments. The increase of yield was due to the increase of the total number of spikelet, and the setting rate had no significant difference. Along with the increase of seedling age, the seedling height and leaf age increased, the tillering per plant decreased, the dry weight of 100 plants and plumpness first increased and then decreased; the growth period was ahead of time, especially the initial heading; the biomass first increased and then decreased, and the harvest index increased. In conclusion, the appropriate seedling age for ‘Guangliangyou 7217’ is 30 days, no more than 35 days. The appropriate seedling age for ‘Tianyouhuazhan’ is 30-35 days, and the elasticity of seedling age is relatively big.

Key words: seedling age, late rice, yield, manual transplanting, growth characteristics

CLC Number:

S511

Ma Yihu, He Xianbiao, Zhu Lianfeng, Zhang Zhongxi, Qi Wen. Manual Transplanting Late Rice ‘Guangliangyou 7217’ and ‘Tianyouhuazhan’: Effects of Seedling Ages on Yield and Growth Characteristics[J]. Chinese Agricultural Science Bulletin, 2020, 36(14): 1-6.

Figures/Tables 5

References 29

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品种	秧龄/ d	株高/ cm	穗长/ cm	有效穗/ (×10⁴/hm²)	每穗粒数	总颖花量/ (×10⁶/hm²)	结实率/ %	千粒重/ g	理论产量/ (t/hm²)	实际产量/ (t/hm²)
广两优7217	25	103.6±1.7a	23.6±0.9a	313.2±9.3a	142.5±3.1b	446.3±23.7bc	80.8±2.1a	27.5±0.10a	9.91±0.18b	9.53±0.15c
	30	105.2±2.1a	23.8±0.2a	309.0±9.2ab	154.4±4.9a	477.1±13.6a	82.7±2.2a	27.4±0.02a	10.82±0.10a	10.79±0.11a
	35	105.4±3.2a	23.0±1.0a	306.9±8.2ab	151.6±9.0a	465.4±27.6ab	82.9±1.2a	27.2±0.03ab	10.51±0.13ab	10.14±0.16b
	40	103.4±1.3a	23.8±0.3a	299.3±6.9bc	146.2±4.2b	437.6±19.2c	81.8±1.0a	27.0±0.01b	9.66±0.12b	9.52±0.23c
	45	104.7±3.0a	23.4±0.4a	294.4±5.7c	146.2±3.0b	430.5±19.3c	82.7±0.2a	27.0±0.05b	9.61±0.02b	9.32±0.26c
天优华占	25	94.0.±4.1a	21.4±0.4a	356.3±8.0bc	161.1±2.4b	573.9±15.2b	81.4±1.1a	22.0±0.01b	10.29±0.13bc	9.92±0.16b
	30	94.2±1.8a	21.7±0.1a	366.7±7.9a	170.6±7.9a	625.6±24.9a	78.5±1.8a	22.1±0.01b	10.85±0.18ab	10.73±0.16a
	35	98.2±2.2a	21.6±0.8a	363.9±5.9ab	166.7±6.2ab	606.6±24.1a	79.5±2.1a	22.7±0.07a	10.97±0.16a	10.63±0.19a
	40	96.6±1.0a	21.4±0.2a	354.2±7.2c	161.6±2.5b	572.3±22.2b	82.8±1.9a	22.4±0.02ab	10.61±0.16abc abc	10.30±0.18ab
	45	93.4±1.3a	21.3±0.4a	361.1±6.4abc	154.6±5.2c	558.2±19.9b	82.2±2.1a	22.3±0.00ab	10.23±0.11c	10.14±0.09b

品种	秧龄/ d	株高/ cm	穗长/ cm	有效穗/ (×10⁴/hm²)	每穗粒数	总颖花量/ (×10⁶/hm²)	结实率/ %	千粒重/ g	理论产量/ (t/hm²)	实际产量/ (t/hm²)
广两优7217	25	103.6±1.7a	23.6±0.9a	313.2±9.3a	142.5±3.1b	446.3±23.7bc	80.8±2.1a	27.5±0.10a	9.91±0.18b	9.53±0.15c
	30	105.2±2.1a	23.8±0.2a	309.0±9.2ab	154.4±4.9a	477.1±13.6a	82.7±2.2a	27.4±0.02a	10.82±0.10a	10.79±0.11a
	35	105.4±3.2a	23.0±1.0a	306.9±8.2ab	151.6±9.0a	465.4±27.6ab	82.9±1.2a	27.2±0.03ab	10.51±0.13ab	10.14±0.16b
	40	103.4±1.3a	23.8±0.3a	299.3±6.9bc	146.2±4.2b	437.6±19.2c	81.8±1.0a	27.0±0.01b	9.66±0.12b	9.52±0.23c
	45	104.7±3.0a	23.4±0.4a	294.4±5.7c	146.2±3.0b	430.5±19.3c	82.7±0.2a	27.0±0.05b	9.61±0.02b	9.32±0.26c
天优华占	25	94.0.±4.1a	21.4±0.4a	356.3±8.0bc	161.1±2.4b	573.9±15.2b	81.4±1.1a	22.0±0.01b	10.29±0.13bc	9.92±0.16b
	30	94.2±1.8a	21.7±0.1a	366.7±7.9a	170.6±7.9a	625.6±24.9a	78.5±1.8a	22.1±0.01b	10.85±0.18ab	10.73±0.16a
	35	98.2±2.2a	21.6±0.8a	363.9±5.9ab	166.7±6.2ab	606.6±24.1a	79.5±2.1a	22.7±0.07a	10.97±0.16a	10.63±0.19a
	40	96.6±1.0a	21.4±0.2a	354.2±7.2c	161.6±2.5b	572.3±22.2b	82.8±1.9a	22.4±0.02ab	10.61±0.16abc abc	10.30±0.18ab
	45	93.4±1.3a	21.3±0.4a	361.1±6.4abc	154.6±5.2c	558.2±19.9b	82.2±2.1a	22.3±0.00ab	10.23±0.11c	10.14±0.09b

品种	秧龄/d	苗高/cm	叶龄/张	分蘖/个	百株干重/g	充实度/(mg/cm)
广两优7217 17	25	37.5±0.29d	7.1±0.05d	6.5±0.12a	96.8±2.69c	25.8±0.29b
	30	46.0±1.26c	8.0±0.02c	6.3±0.16ab	136.0±6.94b	29.6±1.16ab
	35	51.9±2.17b	8.8±0.16b	6.1±0.26ab	175.2±3.32a	33.7±0.16a
	40	57.6±2.41a	9.2±0.09ab	5.9±0.37b	186.3±3.94a	32.4±0.26a
	45	59.8±1.15a	9.5±0.13a	4.3±0.11c	143.4±4.19b	24.0±0.19b
天优华占	25	34.1±0.62d	6.0±0.16d	3.7±0.14a	44.8±2.89d	13.2±0.02c
	30	49.8±1.28c	7.6±0.23c	3.1±0.29ab	69.7±7.23c	14.0±0.45bc
	35	57.9±2.16b	8.9±0.26b	3.1±0.08ab	126.6±5.19a	21.9±0.29a
	40	60.9±1.56a	9.0±0.34b	2.4±0.01b	104.2±4.11b	17.1±0.31bc
	45	61.1±1.39a	9.6±0.25a	2.4±0.14b	109.8±3.39b	18.0±0.06ab

品种	秧龄/d	苗高/cm	叶龄/张	分蘖/个	百株干重/g	充实度/(mg/cm)
广两优7217 17	25	37.5±0.29d	7.1±0.05d	6.5±0.12a	96.8±2.69c	25.8±0.29b
	30	46.0±1.26c	8.0±0.02c	6.3±0.16ab	136.0±6.94b	29.6±1.16ab
	35	51.9±2.17b	8.8±0.16b	6.1±0.26ab	175.2±3.32a	33.7±0.16a
	40	57.6±2.41a	9.2±0.09ab	5.9±0.37b	186.3±3.94a	32.4±0.26a
	45	59.8±1.15a	9.5±0.13a	4.3±0.11c	143.4±4.19b	24.0±0.19b
天优华占	25	34.1±0.62d	6.0±0.16d	3.7±0.14a	44.8±2.89d	13.2±0.02c
	30	49.8±1.28c	7.6±0.23c	3.1±0.29ab	69.7±7.23c	14.0±0.45bc
	35	57.9±2.16b	8.9±0.26b	3.1±0.08ab	126.6±5.19a	21.9±0.29a
	40	60.9±1.56a	9.0±0.34b	2.4±0.01b	104.2±4.11b	17.1±0.31bc
	45	61.1±1.39a	9.6±0.25a	2.4±0.14b	109.8±3.39b	18.0±0.06ab

品种	秧龄/ d	播种期 (月-日)	移栽期 (月-日)	始穗期 (月-日)	抽穗期 (月-日)	齐穗期 (月-日)	成熟期 (月-日)	播种至齐穗时间/d	齐穗至成熟时间/d	全生育期/ d	主茎总叶数/张
广两优7217	25	6-30	7-25	9-13	9-14	9-15	11-10	77	56	133	15.1
	30	6-25	7-25	9-12	9-13	9-14	11-7	81	54	135	14.4
	35	6-20	7-25	9-7	9-10	9-12	11-5	84	54	138	14.3
	40	6-15	7-25	9-3	9-7	9-11	11-4	88	54	142	14.0
	45	6-10	7-25	8-28	9-6	9-8	11-2	90	55	145	12.7
天优华占	25	6-30	7-25	9-13	9-15	9-17	11-11	79	55	134	16.1
	30	6-25	7-25	9-12	9-13	9-15	11-7	82	53	135	15.3
	35	6-20	7-25	9-9	9-11	9-12	11-4	84	53	137	15.1
	40	6-15	7-25	9-3	9-9	9-10	10-31	87	51	138	14.6
	45	6-10	7-25	8-29	9-6	9-9	10-29	91	50	141	13.7