The concept,its mode and historical development of sewage irrigation is introduced,It indicates that water resource is short and wastewater irrigation technology is already relatively mature,so sewage irrigation is feasible at present.

The application of grouting technology in collapse treatment of karst roadbed;

The application of grouting technology in bridge abutment reinforcement engineering;

The application of grouting technique in karst foundation treatment;

Through the analysis of the main failures such as staggering,slab cracking,pumping,smashing,bump at bridge head and roadbase settlement in the pavement of expressway Guangde-Cishan in Anhui Province,the grouting technique,which can reach good treating effect,is preferred to remedy the above mentioned failures.

The practical examples of grouting technique for treating gushing dissolved cave in limestone area are introduced by analyzing of the formation mechanism of the cave,theoretical analysis,construction technique scheme,and construction management planning used.

The application of sewage irrigation technology in sewage land treatment;

Application of water saving irrigation technology on the cover membrance soybeans;

Controlled irrigation technology for wheat and corn;

The application of drip irrigation technique in cotton planting in Alar reclamation area;

Application of drip irrigation technique for the pergola on the city road;

The results show that compared with the traditional irrigation techniques,the drip irrigation technique can reduce the labor intensity and raise the crop output and net income.