Introduction of Research Method on Tree’s Nutrition of Trace Elements in Australia

This is an introduction of the research method on the nutrhion of trace elements and the effect on the growth of trees mainly for sand culture, including:the requirements of laboratory and green house;compounding and purification of nutritive fluids;the selection of experimental materials container for seedling,sand and water; the washing ofthe experiemental utensils; fertilization,sowing,watering and other managements of thegreen house; and the observation,recording; sample collecting and treatment and nutrientanalysis of the tested seedlings.