笔者案头堆放着一些有关“土栽食用菌”的报道,以及农民来信,询问其可行性,读后心情非常沉重。这些广告和报道说:“用普普通通的泥土就能培育出个大、肉厚、营养又丰富的平菇、草菇、凤尾菇等,技术更简单,投资 The author piled some papers on the “native plant edible mushrooms,” as well as letters from farmers, asking about their feasibility, after reading the mood is very heavy. These advertisements and reports said: "With ordinary soil can cultivate a large, fleshy, nutritious and Pleurotus ostreatus, mushrooms, mushrooms, etc., technology is more simple, investment