On the basis of analyzing strength and layer-crack damage characteristics of thin-layered Qinyun-stone ore,the separate blasting and cutting blasting tests are carried out on it.

Study on Forestation Density of Qinghai Spruce in Nanmenxia Forest Region;

Gap regeneration of Picea crassifolia natural forest in Qilian Mountains.;

Variations of Picea crassifolia tree-ring cell structure and their implications to past climate in eastern margin of Qaidam Basin,Northwest China;

Phenotypic Diversity of Natural Populations in Picea crassifolia in Qilian Mountains;

Research of hormone,age and position effect of hardwood cutting in Picea crassifolia Kom;

Study on grafting skill of Picea crassifolia Kom;

Chemical Control Technique for Seed Pest in Picea crassifolia kom.;