Research on Nutritional Growth Pattern of High-Density Sugar Beet Under Mulching and Bare Ground

doi:10.11924/j.issn.1000-6850.casb2025-0332

Abstract

Abstract:

This study aims to investigate the impact of plastic film mulching on the growth and development period of sugar beet, analyzing the changes in nutritional growth to provide a theoretical basis for yield and quality regulation in sugar beet production. Using sugar beets under drip irrigation in Xinjiang, with plastic film mulching and bare ground as test materials, field measurements of plant growth and development indicators were conducted, and root yield and quality parameters were determined at maturity. The results showed that before 87 days after emergence, the fresh weight increment of sugar beet roots under plastic film mulching was higher than that of bare ground. Subsequently, the root growth increment of bare ground sugar beets gradually surpassed that of the mulching treatment, and the sugar content of bare soil sugar beets remained consistently higher. At harvest, the root yield of sugar beets under plastic film mulching was 6.02% lower than that of bare ground, the proportion of green tops in the root was 0.74% lower, the sugar content was 19.04% lower, and the sugar yield was 23.91% lower. Additionally, the K⁺ content in the roots increased by 12.21%, the Na⁺ content increased by 11.36%, and the α-N content increased by 46.99% under plastic film mulching. Plastic film mulching significantly promotes early-stage growth of sugar beets while accumulating higher aboveground biomass, whereas bare ground sugar beets exhibit a more pronounced advantage in the mid-to-late growth stages, which is more conducive to root expansion and sugar accumulation.

Key words: sugar beet, mulching, bare ground, nutrient growth, tuber expansion, sugar content

SUN Linlin, HU Huabing, LIU Jianxiong, HUAN Ting, LI Youfang, LIU Xun, HE Biwei. Research on Nutritional Growth Pattern of High-Density Sugar Beet Under Mulching and Bare Ground[J]. Chinese Agricultural Science Bulletin, 2025, 41(36): 51-59.

Figures/Tables 11

References 25

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项目	日期/（月-日）							总量
项目	6-15	7-2	7-15	7-30	8-16	9-5	9-20	总量
滴管量/(m³/hm²)	1050	1050	900	750	675	600	375	5400
施肥量/(kg/hm²)	405	330	0	0	0	0	0	735

项目	日期/（月-日）							总量
项目	6-15	7-2	7-15	7-30	8-16	9-5	9-20	总量
滴管量/(m³/hm²)	1050	1050	900	750	675	600	375	5400
施肥量/(kg/hm²)	405	330	0	0	0	0	0	735

处理	块根产量/ (kg/hm²)	含糖率/ %	产糖量/ (kg/hm²)	K⁺/ (mmol/100 g)	Na⁺/ (mmol/100 g)	α-N/ (mmol/100 g)	水分利用率/ [kg/(mm·hm²)]
裸地	122730.61±18.15 a	13.78±0.66 a	16909.82±35.94 a	5.65±0.24 b	0.44±0.03 a	0.83±0.17 b	19.41±0.04 a
PE膜	115339.80±29.47 b	11.16±0.45 b	12866.39±30.67 b	6.34±0.16 a	0.49±0.03 a	1.22±0.14 a	18.24±0.07 b

处理	块根产量/ (kg/hm²)	含糖率/ %	产糖量/ (kg/hm²)	K⁺/ (mmol/100 g)	Na⁺/ (mmol/100 g)	α-N/ (mmol/100 g)	水分利用率/ [kg/(mm·hm²)]
裸地	122730.61±18.15 a	13.78±0.66 a	16909.82±35.94 a	5.65±0.24 b	0.44±0.03 a	0.83±0.17 b	19.41±0.04 a
PE膜	115339.80±29.47 b	11.16±0.45 b	12866.39±30.67 b	6.34±0.16 a	0.49±0.03 a	1.22±0.14 a	18.24±0.07 b