并列题名：Research on ammonia emissions from agriculture sector and its control strategies Research on ammonia emissions from agriculture sector and its control strategies 并列题名：Modernisation from agriculture sector to rural area 并列题名：Research on modern agriculture industrial organization strategy 并列题名：Research on China bulk mineral sources and coping strategies 并列题名：Research on comprehensive functions of tourism industry and national strategies 并列题名：Research on the law of information evolution and coping strategies