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在露地栽培条件下,以黄秋葵为试验材料,研究其叶面喷施不同浓度的煤基黄腐酸的施用效果。结果表明,喷施煤基黄腐酸的黄秋葵植株生长速度加快,叶绿素含量增加,光合速率提高,抗旱性能增强,产量增加,产量为3525.7~3931.5 kg/667 m~2,增产率为7.29%~19.64%。黄秋葵品质也得到改善,单荚果重增加,Vc、可溶性固形物、可溶性蛋白质含量均增加,荚果外形美观。在本试验条件下,煤基黄腐酸稀释500倍效果最好。从成本和效果综合考虑,建议生产应用上稀释500~800倍液进行叶面喷施。
Under field cultivation conditions, Okra was used as the experimental material to study the application effects of foliar spraying with different concentrations of fulvic acid. The results showed that the growth of okra with coal-based fulvic acid was accelerated, the content of chlorophyll increased, the photosynthetic rate increased, the drought-resistant performance increased and the yield increased. The yield was 3525.7-3931.5 kg / 667 m ~ 2 and the yield was 7.29% 19.64%. Okra quality also improved, single pod weight increased, Vc, soluble solids, soluble protein content increased, pod beautiful appearance. In this test conditions, coal-based fulvic acid diluted 500 times the best. Considering the cost and effect, it is suggested to dilute 500 ~ 800 times of liquid for foliar application in production application.