松针叶粉的开发及应用山西省晋城市畜牧局常筱立我国现有森林面积１９亿多亩，其中针叶类占到５０％以上，且分布遍及全国各地。据林业专家估测，其针叶可作饲料的松树林约２０００～２４００万亩，按每亩获松针２００公斤计，共４００～４８０万吨。我们若取其１／３，加... Development and Application of Pine Needle Powder Animal Husbandry Bureau of Jincheng, Shanxi Province Chang Xiaoliu The existing forest area in China is over 1.9 billion mu, of which conifers account for more than 50% and are distributed throughout the country. According to the estimation of forestry experts, about 2000-2400 million mu of pine needles can be used as feed for needles and need to purchase 200 mu of pine needles per mu, a total of 4 million to 4.8 million tons. If we take 1/3, plus ...