Abstract:

To examine the impact of compound oligosaccharides on crop yield in Shandong, we conducted an experiment with various treatments, including mixing wheat seeds with compound oligosaccharides and spraying compound oligosaccharides at different stages, as well as soaking corn seeds and spraying with compound oligosaccharides at different stages. In Daiyue District, Shandong Province, wheat spraying at the flowering + regreening period under seed-mixing conditions exhibited superior efficacy compared to spraying solely at the flowering or regreening period, but the difference was not significant. In Huantai County, under seed-mixing conditions, spraying at the regreening period, flowering period, and regreening + flowering period outperformed seed-mixing treatment, with the most favorable outcome observed with seed-mixing + spraying at the flowering period. Conversely, without seed mixing, spraying at the regreening period, flowering period, regreening + flowering period all surpassed the control, with the highest yield increase achieved through spraying at the flowering period. Spray treatment of compound oligosaccharides resulted in higher yields compared to non-soaking methods, with Daiyue District and Huantai County achieving the highest yield and economic benefit during the flowering + filling period and filling period, respectively. When seeds were soaked, the combination of spray treatment during the flowering and filling period yielded the best results in Daiyue District, while the seedling and filling period were most effective in Huantai County. Compound oligosaccharides can substantially enhance crop yield and economic returns. In this region, wheat benefits from seed mixing with compound oligosaccharides combined with spraying at the flowering stage, while maize shows improved outcomes with spraying during the seedling or flowering + filling period, following seed soaking treatment.

Key words: compound oligosaccharides, Shandong, corn, wheat, yield