BEIJING -- Chinese shares slightly rebounded Tuesday amid improving policies in sectors like agriculture, private banking and environmental protection.

The benchmark Shanghai Composite Index rose 0.35 percent, or 7.61 points, to finish at 2,157.24. The Shenzhen Component Index gained 0.41 percent, or 34.80 points, to finish at 8,451.73.

Combined turnover on the two bourses increased to 166.12 billion yuan ($27.02 billion) from 13.99 billion yuan on the previous trading day.

Over 70 percent of all the shares on the two bourses saw gains and 37 of them ended the trading day with 10-percent increase daily cap.

Stocks in agriculture led Thursday's increase, as Chinese Premier Li Keqiang arrived in northeast China's Heilongjiang province on Monday for a survey on modern farming.

The news about Chinese authorities expecting to approve private banks, reported Tuesday by the China Securities Journal, stirred the related sectors. Suning Commerce Group rose 10 percent to 10.81 yuan per share.

The National Development and Reform Commission, China's top economic planner, has recently pushed policies to cut down pollutant emissions so as to tackle worsening smog problems. The sectors involving natural gas and air cleaning accordingly performed strongly.

The ChiNext Index, a NASDAQ-style board tracking China's growth enterprises, surged 3.07 percent, or 37.57 points, to close at 1,260.03 points.