Effects of agricultural laser induction at seedling stage on growth and yield of rice

doi:10.16178/j.issn.0528-9017.20250770

Abstract

Abstract:

Agricultural laser，as a novel supplementary lighting technology in agriculture，has shown considerable potential in regulating crop growth and enhancing both quality and yield. To explore the effects of laser technology on the growth period and yield of rice，this study employed laser irradiation with red-to-blue ratios of 3∶1 and 1∶1 during the rice seedling stage. The seedlings were then transplanted into field plots，and growth indicators，key growth stages，and yield under different treatments were determined. The results showed that the 3∶1 red-to-blue laser treatment significantly promoted the growth of both early- and late-season rice seedlings and increased the seedling growth rate. After transplanting，the 3∶1 laser-treated group exhibited faster recovery，with the maturation period of both early- and late- season rice advancing by 2-3 days. After maturity，the number of effective panicles increased by 12.53%-13.33%，yield increased by 5.56%-13.37%，and no adverse effect was observed on the quality of glutinous rice. In conclusion，laser seedling cultivation with a 3∶1 red-to-blue ratio can effectively promote early maturation and yield increase in rice，demonstrating stable positive effects across different varieties and showing good potential for widespread application.

Key words: agricultural laser, rice, early maturity, yield increase

CLC Number:

S511

LEI Yumeng, CHEN Lingyun, CHEN Pengyu, LI Zhitao, QI Xingjiang, CHENG Feng, YANG Han, QI Yetong. Effects of agricultural laser induction at seedling stage on growth and yield of rice[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(4): 831-837.

Figures/Tables 6

References 20

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品种	处理	株高/cm	根长/mm	叶龄	茎基宽/cm	地上部干重/g	地下部干重/g	壮苗指数
中组143	CK	15.50±0.50 b	4.00±0.50 b	2.90±0.20 a	0.97±0.06 b	0.18±0.01 b	0.04±0.01 a	0.07±0.01 a
	3∶1	17.70±0.29 a	5.17±0.29 a	3.10±0.20 a	1.16±0.06 a	0.23±0.01 a	0.05±0.01 a	0.08±0.01 a
	1∶1	16.50±0.87 ab	4.50±0.50 ab	3.23±0.16 a	1.13±0.06 a	0.22±0.01 a	0.04±0.01 a	0.07±0.01 a
甬优1540	CK	13.33±1.54 b	3.83±0.58 b	2.90±0.10 b	0.87±0.06 b	0.17±0.02 b	0.04±0.01 b	0.06±0.01 b
	3∶1	17.66±2.25 a	5.17±0.76 a	3.10±0.20 ab	0.93±0.06 ab	0.23±0.06 a	0.06±0.01 a	0.09±0.01 a
	1∶1	15.00±1.32 ab	4.50±0.50 ab	3.23±0.12 a	1.03±0.06 a	0.20±0.02 a	0.05±0.01 ab	0.07±0.01 ab

品种	处理	株高/cm	根长/mm	叶龄	茎基宽/cm	地上部干重/g	地下部干重/g	壮苗指数
中组143	CK	15.50±0.50 b	4.00±0.50 b	2.90±0.20 a	0.97±0.06 b	0.18±0.01 b	0.04±0.01 a	0.07±0.01 a
	3∶1	17.70±0.29 a	5.17±0.29 a	3.10±0.20 a	1.16±0.06 a	0.23±0.01 a	0.05±0.01 a	0.08±0.01 a
	1∶1	16.50±0.87 ab	4.50±0.50 ab	3.23±0.16 a	1.13±0.06 a	0.22±0.01 a	0.04±0.01 a	0.07±0.01 a
甬优1540	CK	13.33±1.54 b	3.83±0.58 b	2.90±0.10 b	0.87±0.06 b	0.17±0.02 b	0.04±0.01 b	0.06±0.01 b
	3∶1	17.66±2.25 a	5.17±0.76 a	3.10±0.20 ab	0.93±0.06 ab	0.23±0.06 a	0.06±0.01 a	0.09±0.01 a
	1∶1	15.00±1.32 ab	4.50±0.50 ab	3.23±0.12 a	1.03±0.06 a	0.20±0.02 a	0.05±0.01 ab	0.07±0.01 ab

品种	处理	移栽期（月-日）	始穗期（月-日）	齐穗期（月-日）	成熟期（月-日）
中组143	CK	04-22	06-19	06-21	07-23
	3∶1	04-22	06-16	06-18	07-20
	1∶1	04-22	06-18	06-20	07-23
甬优1540	CK	07-23	09-09	09-12	10-27
	3∶1	07-23	09-06	09-09	10-24
	1∶1	07-23	09-07	09-10	10-25

品种	处理	移栽期（月-日）	始穗期（月-日）	齐穗期（月-日）	成熟期（月-日）
中组143	CK	04-22	06-19	06-21	07-23
	3∶1	04-22	06-16	06-18	07-20
	1∶1	04-22	06-18	06-20	07-23
甬优1540	CK	07-23	09-09	09-12	10-27
	3∶1	07-23	09-06	09-09	10-24
	1∶1	07-23	09-07	09-10	10-25

品种	处理	每667 m²有效穗数/10⁴	每穗总粒数	每穗实粒数	千粒重/g	每667 m²产量/kg
中组143	CK	15.40±0.55 b	157.40±6.35 a	124.90±5.78 a	25.99±1.66 a	595.85
	3∶1	17.33±0.84 a	158.90±8.96 a	127.20±7.47 a	26.14±1.61 a	675.52
	1∶1	16.20±0.84 ab	156.90±5.51 a	128.30±7.18 a	25.80±1.09 a	637.73
甬优1540	CK	9.00±0.71 b	214.30±12.39 a	176.70±11.12 a	23.83±1.48 a	470.95
	3∶1	10.20±0.84 a	212.60±9.47 a	178.70±10.58 a	24.67±1.19 a	497.12
	1∶1	9.20±0.84 ab	219.60±11.46 a	180.40±11.96 a	24.47±1.48 a	489.24