The article mainly introduces Yongling highway s roadbed,excavation,the balance deployment of earth and stone,construction of small structures,checking and accepting,and the engineering quality management.

Application of gray Markov chain model in water quality forecast of Yongjiang river in Nanning;

Improvement of water quality in Yongjiang River by construction of wastewater treatment plant in Nanning City;

Determination of the barrier clearance compensating means of the Yongjiang river;

Analysis of the space-time variation rule of the water quality in Nanning section of the Yongjiang River;

Try to evaluate the Yongjiang river section's water quality with the probability method;

Study on Genetic Diversity and Nucleus Germplasm Construction of Yongning Common Wild Rice(Oryza rufipogon Griff.) Populations in Guangxi;

Cai Yong s Contribution of Astronomy;