{"id":10259,"date":"2020-03-30T11:37:54","date_gmt":"2020-03-30T03:37:54","guid":{"rendered":"https:\/\/www.humicchina.com\/?p=10259"},"modified":"2025-08-04T18:40:47","modified_gmt":"2025-08-04T10:40:47","slug":"effect-and-mechanism-of-fulvic-acid-on-agriculture","status":"publish","type":"post","link":"https:\/\/www.humicchina.com\/pt\/blog\/effect-and-mechanism-of-fulvic-acid-on-agriculture.html","title":{"rendered":"Efeito e mecanismo do \u00e1cido f\u00falvico na agricultura."},"content":{"rendered":"

\u00c1cido Fulv\u00edco<\/span><\/span><\/strong><\/a> \u00c9 o componente menor e mais ativo do \u00e1cido h\u00famico.\u00c9 a ess\u00eancia do \u00e1cido h\u00famico. O efeito do \u00e1cido f\u00falvico \u00e9 o mais est\u00e1vel na agricultura.<\/span><\/span> As caracter\u00edsticas espec\u00edficas s\u00e3o as seguintes,<\/span><\/span><\/span><\/p>\n

<\/p>\n

Caracter\u00edsticas do \u00e1cido f\u00falvico na agricultura<\/span><\/span><\/span><\/h2>\n

1)O peso molecular do \u00e1cido f\u00falvico \u00e9 pequeno e f\u00e1cil de ser absorvido e utilizado pelas plantas.<\/span><\/span><\/p>\n

2)O conte\u00fado do grupo funcional do \u00e1cido f\u00falvico \u00e9 mais do que o \u00e1cido h\u00famico geral, a atividade fisiol\u00f3gica \u00e9 melhor.<\/span><\/span><\/p>\n

3)A capacidade de complexa\u00e7\u00e3o dos \u00edons met\u00e1licos \u00e9 mais forte.<\/span><\/span><\/p>\n

4)O \u00e1cido h\u00famico n\u00e3o pode ser dissolvido diretamente em \u00e1gua e precisa ser convertido em pot\u00e1ssio, s\u00f3dio e outros sais met\u00e1licos monovalentes ou sais de am\u00f4nio para se dissolverem em \u00e1gua. A solu\u00e7\u00e3o aquosa desses sais torna-se alcalina, enquanto o \u00e1cido f\u00falvico \u00e9 diretamente sol\u00favel em \u00e1gua e sua solu\u00e7\u00e3o aquosa torna-se \u00e1cida.<\/span><\/span><\/p>\n

\"fulvic<\/p>\n

O efeito do \u00e1cido f\u00falvico no solo, fertilizante e planta na agricultura \u00e9 o seguinte:<\/span><\/span><\/p>\n

1.\u00c1cido fulvico na melhoria do solo agr\u00edcola<\/span><\/span><\/span><\/h2>\n

1)Melhorar a estrutura agregada do solo.<\/span><\/span><\/span><\/h3>\n

O \u00e1cido f\u00falvico pertence \u00e0s subst\u00e2ncias h\u00famicas, que podem afetar as propriedades do solo, promover o solo para formar uma estrutura agregada mais est\u00e1vel, aumentar o conte\u00fado agregado de \u2265 0,25 mm no solo em 10 – 20% e aumentar o conte\u00fado de mat\u00e9ria org\u00e2nica em 10%, o que pode manter a umidade do solo e aumentar a ventila\u00e7\u00e3o, o que \u00e9 ben\u00e9fico para o crescimento das culturas e melhorar a reten\u00e7\u00e3o de \u00e1gua do solo.<\/span><\/span>\"fulvic<\/p>\n

O \u00e1cido f\u00falvico \u00e9 um tipo de col\u00f3ide hidrof\u00edlico com forte capacidade de absor\u00e7\u00e3o de \u00e1gua. A absor\u00e7\u00e3o m\u00e1xima de \u00e1gua pode ultrapassar 500%. O peso da \u00e1gua absorvida da atmosfera saturada pode atingir mais do que o dobro do seu pr\u00f3prio peso, que \u00e9 muito maior do que o coloide mineral comum. O \u00e1cido f\u00falvico inibe a transpira\u00e7\u00e3o das culturas e retarda o consumo de \u00e1gua do solo e aumenta o teor de \u00e1gua do solo em conformidade.<\/span><\/span><\/p>\n

2)Melhorar a conserva\u00e7\u00e3o da fertilidade do solo.<\/span><\/span><\/span><\/h3>\n

O \u00e1cido f\u00falvico em si \u00e9 um \u00e1cido org\u00e2nico, que n\u00e3o s\u00f3 aumenta a dissolu\u00e7\u00e3o de partes minerais no solo, fornece nutrientes do solo, mas tamb\u00e9m aumenta a disponibilidade de nutrientes por meio de complexidade. Como um col\u00f3ide org\u00e2nico, o \u00e1cido f\u00falvico tem cargas positivas e negativas, que podem adsorver ani\u00f5es e cati\u00f5es, de modo que esses nutrientes possam ser preservados no solo sem perda de \u00e1gua e a taxa de utiliza\u00e7\u00e3o de fertilizantes \u00e9 melhorada, o que \u00e9 especialmente importante no solo arenoso.<\/span><\/span><\/p>\n

\"fulvic<\/span><\/h3>\n

3)Ajuste o pH.<\/span><\/span><\/span><\/h2>\n

O \u00e1cido f\u00falvico e o sal de \u00e1cido f\u00falvico se transformam para formar um sistema tamp\u00e3o, desempenhando assim o papel de regular o pH da solu\u00e7\u00e3o do solo.<\/span><\/span><\/p>\n

4)Reduzir a salinidade do solo.<\/span><\/span><\/span><\/h3>\n

\u00c1cido f\u00falvico, estrutura coloidal formada por complexa\u00e7\u00e3o e quela\u00e7\u00e3o de c\u00e1tions met\u00e1licos no solo, e sua porosidade (maior que a superf\u00edcie) pode adsorver \u00edons ou mol\u00e9culas na solu\u00e7\u00e3o do solo e reduzir a concentra\u00e7\u00e3o de sal na solu\u00e7\u00e3o do solo.<\/span><\/span><\/p>\n

2. Aumento da utiliza\u00e7\u00e3o de fertilizantes<\/span><\/span><\/span><\/h2>\n

O \u00e1cido f\u00falvico cont\u00e9m grupos carbox\u00edlicos, grupos hidroxilo fen\u00f3licos e outros grupos funcionais. Tem uma forte capacidade de complexamento, quela\u00e7\u00e3o e adsor\u00e7\u00e3o de superf\u00edcie. O que pode reduzir a perda de nitrog\u00eanio de am\u00f4nio, aumentar a dist\u00e2ncia de movimento do f\u00f3sforo no solo, inibir a fixa\u00e7\u00e3o de f\u00f3sforo sol\u00favel em \u00e1gua no solo, converter f\u00f3sforo inv\u00e1lido em f\u00f3sforo dispon\u00edvel e promover a absor\u00e7\u00e3o de f\u00f3sforo pelo sistema radicular.<\/span><\/span><\/p>\n

O \u00e1cido f\u00falvico pode absorver e armazenar \u00edons de pot\u00e1ssio e aumentar o conte\u00fado de pot\u00e1ssio dispon\u00edvel, especialmente o aumento da efici\u00eancia do fertilizante de pot\u00e1ssio. Experimentos mostram que o \u00e1cido f\u00falvico pode aumentar a taxa de utiliza\u00e7\u00e3o de nitrog\u00eanio, f\u00f3sforo e pot\u00e1ssio em fertilizantes em mais de 20% para promover a agricultura.<\/span><\/span><\/p>\n

3. Pesticidas de libera\u00e7\u00e3o lenta<\/span><\/span><\/span><\/h2>\n

\"\"<\/p>\n

O \u00e1cido f\u00falvico tem a fun\u00e7\u00e3o de surfactante, que pode reduzir a tens\u00e3o superficial da \u00e1gua e emulsionar e dispersar o pesticida; O \u00e1cido f\u00falvico nas plantas, como uma subst\u00e2ncia coloidal com grande viscosidade e \u00e1rea de superf\u00edcie, pode ter um forte efeito de adsor\u00e7\u00e3o f\u00edsica sobre o pesticida; O \u00e1cido f\u00falvico em si tem resist\u00eancia bacteriost\u00e1tica e \u00e0 doen\u00e7a, e o composto com fungicidas \u00e9 equivalente \u00e0 combina\u00e7\u00e3o de dois pesticidas.<\/span><\/span><\/p>\n

4. Estimular o crescimento das plantas<\/span><\/span><\/span><\/h2>\n

\"\"<\/p>\n

O \u00e1cido f\u00falvico \u00e9 semelhante ao horm\u00f4nio end\u00f3geno do corpo da planta, que pode promover a germina\u00e7\u00e3o de sementes, o crescimento das ra\u00edzes e o amadurecimento precoce da colora\u00e7\u00e3o dos frutos. Ele mostra o seguinte, promovendo o crescimento e a atividade das ra\u00edzes, semelhante ao efeito de auxina; promovendo a germina\u00e7\u00e3o de sementes, emerg\u00eancia de mudas e crescimento de mudas, semelhante ao efeito gibberelina;<\/span><\/span><\/p>\n

Fazendo folhas alargadas, espessadas, verdes, senesc\u00eancia folha inferior retardada, semelhante ao efeito de citocinina; reduzindo estoma, transpira\u00e7\u00e3o, semelhante ao efeito do \u00e1cido absc\u00edsico; Colora\u00e7\u00e3o precoce, matura\u00e7\u00e3o, semelhante ao efeito de matura\u00e7\u00e3o de etileno; Promovendo a divis\u00e3o celular e alongamento celular, diferencia\u00e7\u00e3o e outros efeitos, semelhantes ao efeito de dois ou mais horm\u00f4nios vegetais.<\/span><\/span><\/p>\n

5. Melhoria da qualidade agr\u00edcola<\/span><\/span><\/span><\/h2>\n

\"fulvic<\/span><\/h2>\n

O \u00e1cido f\u00falvico aumenta a s\u00edntese de a\u00e7\u00facar, amido, prote\u00edna, gordura e v\u00e1rias vitaminas, pode estimular a atividade da enzima polissacar\u00eddeo, tornar o polissacar\u00eddeo em monossacar\u00eddeo sol\u00favel, de modo a melhorar a do\u00e7ura da fruta; aumentar a propor\u00e7\u00e3o de a\u00e7\u00facar total para nicotina, pot\u00e1ssio, cloro nas folhas de tabaco, melhorar a qualidade das folhas de tabaco; Melhorar o teor total de a\u00e7\u00facar e o teor de vitamina C em melancia, mel\u00e3o e outras frutas<\/span><\/span><\/p>\n

6. Aumentar a resist\u00eancia das culturas<\/span><\/span><\/span><\/h2>\n

\"\"<\/p>\n

\u00cdndice de resist\u00eancia das plantas (um): O conte\u00fado de ABA (desacidifica\u00e7\u00e3o em plantas: um horm\u00f4nio vegetal que inibe o crescimento). As plantas aumentar\u00e3o o conte\u00fado de ABA sob qualquer condi\u00e7\u00e3o de adversidade. O \u00e1cido absc\u00edsico \u00e9 o “primeiro mensageiro” que inicia a express\u00e3o de genes anti-estresse em plantas e ativa efetivamente o sistema imunol\u00f3gico anti-estresse nas plantas.<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c1cido Fulv\u00edco \u00c9 o componente menor e mais ativo do \u00e1cido h\u00famico.\u00c9 a ess\u00eancia do \u00e1cido h\u00famico. O efeito do \u00e1cido f\u00falvico \u00e9 o mais est\u00e1vel na agricultura. As caracter\u00edsticas espec\u00edficas s\u00e3o as seguintes,<\/p>\n","protected":false},"author":1,"featured_media":7515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Effect and mechanism of fulvic acid in agriculture.","_yoast_wpseo_metadesc":"Fulvic acid in plants is the smallest and most active component in humic acid The effect of fulvic acid is the most stable in 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