Study on the effects of different dosages of pollen polysaccharides combined with compound fertilizer on the growth of Chinese cabbage
不同用量花粉多糖配施复合肥对小白菜生长影响研究

摘要

花粉多糖是一种植物源生物刺激素，本研究采用田间小区验证方式，探索以复合肥为底肥，复配花粉多糖后，对小白菜植株生长、品质改善及氮肥利用率提升效果。试验结果显示：①复合肥复配花粉多糖处理后，对小白菜叶长及叶绿素有显著提升效果，其中1kg/t复配量下小白菜叶长增长率达到8.08%，4kg/t复配量下，小白菜SPAD值增加11.93%。②复合肥复配花粉多糖后，小白菜Vc含量、可溶性糖含量增长率最高分别达到22.93%、20.03%，主要表现在1kg/t复配量处理；复配处理后，小白菜中氮磷钾含量增长率最高分别达到8.26%、20.05%、13.09%，主要表现在1-2kg/t复配量。③复配处理后，小白菜产量在4kg/t复配量时显著增加了4.17%；复配后氮肥利用率均显著增加，其中在4kg/t复配量处理下，氮肥利用率显著增加至46.96%，较复合肥处理增加了56.85%。整体来看，在复合肥中复配花粉多糖，可在促进小白菜快速生长的同时，提升小白菜品质，增加小白菜产量，改善氮肥利用率。

Abstract

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.