THE German state of Baden-Wurttemberg is trying to attract capital from Hong Kong and China, both for business and pleasure. The state's industry and tourism delegation was in Hong Kong yesterday on the second leg of its China mission, having visited Beijing. Southeast Asia absorbs 10 per cent of the state's total exports and is its third-largest consumer market. Hermann Schauffler, of Baden-Wurttemberg's tourist board, said more industrial activity meant more tourism. He said the board worked with industries, taking advantage of the synergy generated by industrial development. Nils Kroesen, director of Heidelberg Convention Bureau, said that group travel in Europe, popular with Americans, was suffering, while business trips from Asia were increasing. About 35 per cent of tourism in the state comes from foreign overnight visitors. Japanese visitors account for 10 per cent of this figure. More than 30,000 Hong Kong and mainland visitors go to Baden-Wurttemberg each year. Delegates are aiming for a 10 per cent increase in tourism next year. The tourism board is hoping to attract and keep business visitors for longer than one night. Appealing to business travellers with tight schedules, the state is using the ''Apollo'' and ''Amadeus'' reservation systems to allow booking of cultural events in 30 cities. Tourism provides five per cent of the state's gross national product and more than 200,000 jobs. The delegation hopes to encourage joint ventures and business interest in the state. It hopes to build an international network for exchange in manufacturing and education. Baden-Wurttemberg is trying to recover from Germany's costly reunification. ''The whole system crashed,'' said Mr Schaufler, formerly of East Germany. Businesses were no longer kept alive by policy and nearly all companies had died, he said.