Journal of Agriculture and Food Science

Pollen polysaccharide is a plant derived biostimulant. In this study, a field plot validation method was used to explore the effects of using compound fertilizer as the base fertilizer and compounding pollen polysaccharide on the growth, quality improvement, and nitrogen fertilizer utilization efficiency of Chinese cabbage plants. The experimental results showed that: ① After treatment with compound fertilizer supplemented with pollen polysaccharide, there was a significant improvement in the leaf length and chlorophyll content of Chinese cabbage. Specifically, at a compounding ratio of 1kg/t, the leaf length growth rate of Chinese cabbage reached 8.08%, and at a compounding ratio of 4kg/t, the SPAD value of Chinese cabbage increased by 11.93%. ② After compounding compound fertilizer with pollen polysaccharide, the highest increasing rates of vitamin C content and soluble sugar content in Chinese cabbage reached 22.93% and 20.03%, respectively, mainly manifested at a compounding ratio of 1kg/t. After compounding treatment, the highest increasing rates of nitrogen, phosphorus, and potassium content in Chinese cabbage reached 8.26%, 20.05%, and 13.09%, respectively, mainly manifested at a compounding ratio of 1-2kg/t. ③ After compounding treatment, the yield of Chinese cabbage significantly increased by 4.17% at a compounding ratio of 4kg/t; the nitrogen fertilizer utilization efficiency significantly increased after compounding, with the nitrogen fertilizer utilization efficiency significantly increasing to 46.96% at a compounding ratio of 4kg/t, representing a 56.85% increase compared to compound fertilizer treatment. Overall, supplementing compound fertilizer with pollen polysaccharide can promote the rapid growth of Chinese cabbage while improving its quality, increasing its yield, and enhancing nitrogen fertilizer utilization efficiency.

Biostimulants; Pollen polysaccharides; Nitrogen fertilizer utilization rate; Vegetables; Nutritional quality