松树叶是一种营养价值较高的树叶。据报导,松叶含有86种成份。苏联于30年代开始研究,50年代就开始利用,并从中提取生物活性物质等,作为家禽饲料和维生素添加剂。我国松计资源丰富,几乎遍及全国,仅长江以南的马尾松过熟林就有五亿立方米。如按一立方米木材得500公斤针叶计算,就有2.5 Pine leaves are high nutritional value leaves. It is reported that pine leaf contains 86 kinds of ingredients. The Soviet Union began to study in the 1930s and began to use it in the 1950s. Bio-active substances were extracted from it as poultry feed and vitamin additives. Our country pine is rich in resources, almost all over the country, there are only 500 million cubic meters of masson pine forest south of the Yangtze River. If you press 500 cubic meters of cubic meters of wood needles, there are 2.5