一、引言毛竹干物质中除了大量的碳、氢、氧外,尚有对毛竹生长起着很重要作用的矿质营养元素。前者来自空气中的CO_2和水,后者取自土壤。所有这些元素通常分为大量元素和微量元素,两者在毛竹生命活动中起着同样重要的作用。 I. INTRODUCTION In addition to a large amount of carbon, hydrogen and oxygen in dry matter of bamboo, there are mineral nutrients that play a very important role in the growth of bamboo. The former comes from the air of CO 2 and water, the latter from the soil. All of these elements are usually divided into a large number of elements and trace elements, both of which play an equally important role in the life activities of the bamboo.