{"id":12624,"date":"2026-10-23T20:37:03","date_gmt":"2026-10-23T20:37:03","guid":{"rendered":"https:\/\/mycosupplies.eu\/2026\/10\/23\/substrat-champignon\/"},"modified":"2026-11-12T09:51:27","modified_gmt":"2026-11-12T09:51:27","slug":"substrat-champignon","status":"publish","type":"post","link":"https:\/\/mycosupplies.eu\/fr\/2026\/10\/23\/substrat-champignon\/","title":{"rendered":"Substrat champignon : types, recettes et pr\u00e9paration"},"content":{"rendered":"<p>Un <strong>substrat champignon<\/strong> est le mat\u00e9riau que votre myc\u00e9lium consomme et colonise avant de produire des champignons. Voyez-le comme le sol de votre culture. Le bon substrat apporte au myc\u00e9lium nourriture, eau et air. Le mauvais entra\u00eene une croissance lente, de petites vol\u00e9es ou des moisissures. Dans ce guide, vous apprendrez quel substrat choisir et comment le pr\u00e9parer.<\/p>\n<h2>Qu\u2019est-ce qu\u2019un substrat champignon ?<\/h2>\n<p>En bref, un substrat champignon est tout mat\u00e9riau en vrac que le myc\u00e9lium peut coloniser. Les cultivateurs font d\u2019abord pousser le myc\u00e9lium sur des grains. C\u2019est ce qu\u2019on appelle le blanc sur grain. Ensuite, ils m\u00e9langent ce blanc avec une plus grande quantit\u00e9 de substrat. Le substrat retient l\u2019humidit\u00e9 et donne au myc\u00e9lium de la place pour s\u2019\u00e9tendre. Une fois enti\u00e8rement colonis\u00e9, les champignons commencent \u00e0 se former en surface.<\/p>\n<h2>Types courants de substrat champignon<\/h2>\n<p>Chaque esp\u00e8ce pr\u00e9f\u00e8re une nourriture diff\u00e9rente. Voici les options les plus courantes :<\/p>\n<ul>\n<li><strong>Fibre de coco et vermiculite :<\/strong> le m\u00e9lange classique pour cubensis. Il retient bien l\u2019eau et se contamine rarement.<\/li>\n<li><strong>Paille :<\/strong> bon march\u00e9 et id\u00e9ale pour les pleurotes. Il suffit de la pasteuriser.<\/li>\n<li><strong>Sciure de bois dur :<\/strong> id\u00e9ale pour les esp\u00e8ces lignicoles comme le shiitake et l\u2019hydne h\u00e9risson.<\/li>\n<li><strong>Masters mix :<\/strong> moiti\u00e9 sciure de bois dur, moiti\u00e9 coques de soja. Il donne de tr\u00e8s hauts rendements, mais doit \u00eatre st\u00e9rilis\u00e9.<\/li>\n<li><strong>Fumier :<\/strong> riche en nutriments et appr\u00e9ci\u00e9 de cubensis, mais il contient plus de bact\u00e9ries.<\/li>\n<\/ul>\n<h2>Recette de substrat champignon \u00e0 la fibre de coco et vermiculite<\/h2>\n<p>Fibre de coco, vermiculite et gypse (souvent appel\u00e9 CVG) : c\u2019est le substrat champignon le plus simple pour d\u00e9buter. Pour un lot, il vous faut :<\/p>\n<ul>\n<li>Une brique de fibre de coco de 650 g<\/li>\n<li>Environ 2 litres de vermiculite<\/li>\n<li>100 \u00e0 200 g de gypse<\/li>\n<li>Environ 4 \u00e0 5 litres d\u2019eau bouillante<\/li>\n<\/ul>\n<p>D\u2019abord, placez la brique de coco dans un seau propre. Ensuite, versez l\u2019eau bouillante dessus et attendez que la brique se d\u00e9sagr\u00e8ge. Puis incorporez la vermiculite et le gypse. Fermez le couvercle et laissez refroidir une nuit. Cette \u00e9tape simple pasteurise aussi le m\u00e9lange. Vous voulez savoir pourquoi le gypse compte ? Lisez notre guide sur <a href=\"https:\/\/mycosupplies.eu\/fr\/2025\/04\/12\/gypse-pour-champignons\/\">le gypse pour champignons<\/a>.<\/p>\n<h2>Bien doser l\u2019humidit\u00e9 : la capacit\u00e9 au champ<\/h2>\n<p>La teneur en eau est le probl\u00e8me le plus fr\u00e9quent avec tout substrat. L\u2019objectif est la capacit\u00e9 au champ. Cela signifie que le substrat retient autant d\u2019eau que possible sans goutter. Pour tester, pressez une poign\u00e9e aussi fort que possible. Quelques gouttes doivent sortir, mais pas un filet continu. S\u2019il est trop sec, ajoutez un peu d\u2019eau. S\u2019il est trop humide, ajoutez un peu de coco s\u00e8che ou de vermiculite.<\/p>\n<h2>Pasteuriser ou st\u00e9riliser votre substrat champignon ?<\/h2>\n<p>Les substrats pauvres en nutriments, comme la fibre de coco et la paille, n\u2019ont besoin que d\u2019\u00eatre pasteuris\u00e9s. La pasteurisation tue la plupart des concurrents, mais laisse vivre certains microbes utiles. Vous pouvez le faire \u00e0 l\u2019eau bouillante ou en chauffant le substrat \u00e0 environ 65 \u00e0 80 \u00b0C pendant une \u00e0 deux heures.<\/p>\n<p>Les substrats riches, comme le masters mix ou la sciure enrichie, doivent \u00eatre enti\u00e8rement st\u00e9rilis\u00e9s. Sinon, la moisissure pousse plus vite que votre myc\u00e9lium. Pour cela, il vous faut un autocuiseur ou un autoclave \u00e0 121 \u00b0C pendant environ deux heures. Beaucoup de cultivateurs remplissent des <a href=\"https:\/\/mycosupplies.eu\/fr\/categorie-produit\/unicorn-bags\/\">Unicorn bags<\/a> autoclavables et st\u00e9rilisent le substrat \u00e0 l\u2019int\u00e9rieur.<\/p>\n<h2>Quelle quantit\u00e9 de blanc par substrat ?<\/h2>\n<p>La plupart des cultivateurs m\u00e9langent une part de blanc sur grain avec deux \u00e0 quatre parts de substrat. Plus de blanc signifie une colonisation plus rapide et moins de risque de contamination. Moins de blanc fait \u00e9conomiser de l\u2019argent, mais la culture prend plus de temps. Pour une premi\u00e8re culture, nous recommandons un rapport d\u2019environ un pour deux. Apr\u00e8s le m\u00e9lange, \u00e9talez le substrat en couche r\u00e9guli\u00e8re dans un <a href=\"https:\/\/mycosupplies.eu\/fr\/produit\/unicorn-bag-xls-b\/\">sac de culture<\/a> ou un bac.<\/p>\n<h2>Substrat champignon pr\u00eat \u00e0 l\u2019emploi<\/h2>\n<p>Vous ne voulez pas m\u00e9langer et pasteuriser vous-m\u00eame ? Notre substrat champignon pr\u00eat \u00e0 l\u2019emploi est un m\u00e9lange de 75 % de fibre de coco et 25 % de vermiculite. Nous l\u2019hydratons \u00e0 la capacit\u00e9 au champ et le st\u00e9rilisons dans un sac \u00e0 filtre. Choisissez le <a href=\"https:\/\/mycosupplies.eu\/fr\/produit\/substrat-fibre-de-coco-2000cc\/\">sac de 2000 cc<\/a>, le <a href=\"https:\/\/mycosupplies.eu\/fr\/produit\/substrat-champignon-4000cc\/\">sac de 4000 cc<\/a> ou le <a href=\"https:\/\/mycosupplies.eu\/fr\/produit\/substrat-champignon-6000cc\/\">sac de 6000 cc<\/a> pour un monotub. Il suffit d\u2019ajouter du <a href=\"https:\/\/mycosupplies.eu\/fr\/produit\/mais-sterilise-4000cc\/\">blanc sur grain<\/a> colonis\u00e9 et c\u2019est parti.<\/p>\n<h2>Erreurs courantes avec le substrat<\/h2>\n<ul>\n<li><strong>Trop humide :<\/strong> l\u2019eau stagnante au fond attire les bact\u00e9ries.<\/li>\n<li><strong>Trop sec :<\/strong> le myc\u00e9lium stagne et les primordia se dess\u00e8chent.<\/li>\n<li><strong>Trop riche sans st\u00e9rilisation :<\/strong> les nutriments en plus nourrissent aussi la moisissure.<\/li>\n<li><strong>Trop peu de blanc :<\/strong> une colonisation lente donne une longueur d\u2019avance aux contaminants.<\/li>\n<\/ul>\n<p>Vous d\u00e9butez ? Commencez par notre guide \u00e9tape par \u00e9tape pour <a href=\"https:\/\/mycosupplies.eu\/fr\/2023\/06\/04\/cultiver-des-champignons\/\">cultiver des champignons<\/a>. Pour en savoir plus sur les m\u00e9thodes de culture, consultez <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Fongiculture\" target=\"_blank\" rel=\"noopener\">l\u2019article Wikip\u00e9dia sur la fongiculture<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le substrat champignon expliqu\u00e9 : quel type pour quelle esp\u00e8ce, une recette simple coco-vermiculite, la capacit\u00e9 au champ et pasteuriser ou 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