{"id":11802,"date":"2021-05-17T20:35:47","date_gmt":"2021-05-17T12:35:47","guid":{"rendered":"https:\/\/www.humicchina.com\/?p=11802"},"modified":"2025-08-08T20:20:38","modified_gmt":"2025-08-08T12:20:38","slug":"how-to-use-humic-acid-for-plants-and-quality-standard-of-humic-acid","status":"publish","type":"post","link":"https:\/\/www.humicchina.com\/vi\/blog\/how-to-use-humic-acid-for-plants-and-quality-standard-of-humic-acid","title":{"rendered":"How to use humic acid for plants and what is the quality standard of humic acid?"},"content":{"rendered":"

The previous article <\/span><\/span><\/span><\/span><\/span><\/span>“The concept and mechanism of humic acid”<\/span><\/span><\/span><\/span><\/span><\/span><\/a> popularized the concept of humic acid and its mechanism of action for everyone. Today, this article will continue to explain how to use humic acid for plants and quality standards of humic acid products.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

How to use humic acid for plants and quality standard of humic acid.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/h2>\n

At present, <\/span><\/span>humic acid fertilizers<\/span><\/span><\/a> are still under continuous development, and their product quality inspections are mostly based on industry and local standards, and the application methods vary from product to product.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

Application method and quality standard of <\/span><\/span><\/span><\/span><\/span><\/span>sodium humate<\/span><\/span><\/span><\/span><\/span><\/span><\/a><\/strong><\/span><\/h3>\n

The national industry technical standard ZBG21005-87 stipulates that the humic acid powder content (dry basis) of the first, second, and third products shall not be less than 70%, 55%, and 40% respectively, and the pH value shall be 8.0~9.0, 9.0~11.0, 9.0, respectively. ~11.0, the water-insoluble content (dry basis) does not exceed 10%, 20%, and 25% respectively.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

\"How<\/p>\n

The application method is mainly after mixing into a solution, watering, seed dressing and foliar fertilizer. Among them, mix with 0.05%~0.1% concentration as base fertilizer, apply 200-250 kg per acre, preferably mixed with farm manure; as top dressing, apply 150-200 kg per acre, apply along with water or irrigate beside the crop roots. The concentration of seed soaking or foliar spraying before planting is 0.05%~0.5%, and the seed soaking time is preferably 5~10 hours, and that of rice and cotton is 24 hours; foliar spraying should be carried out after flowering to the early stage of filling, total spraying 2 ~3 times.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

Application method and quality standard of ammonium humate<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/h3>\n

According to the industry standard HG1-1143-78 of the Ministry of Chemical Industry, the water-soluble humic acid powder content (dry basis) of the first and second-class products shall not be less than 35% and 25% respectively, and the content of available nitrogen (dry basis) shall not be less than 4% and 3%. The application method and dosage are the same as sodium humate, especially suitable for saline-alkali land, waterlogged depression, sandy soil and compacted clay soil.<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

Application method and quality standard of <\/span><\/span><\/span><\/span><\/span><\/span>water-soluble fertilizer containing humic acid<\/span><\/span><\/span><\/span><\/span><\/span><\/a><\/strong><\/span><\/h3>\n

Humic acid<\/span><\/span><\/a> containing water-soluble fertilizers are liquid or solid fertilizers made by adding appropriate amounts of nitrogen, phosphorus, potassium or trace elements to humic acid.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

The industry technical standard (NY1106-2006) stipulates:<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n