为调查农村实行家庭联产责任制时经济体制改革后，人群感染钩虫等肠道线虫的消长情况，我们分别于１９８５年５月和１９９６年１１月进行调查，现将结果报告如下：１基本情况白莲村位于邛崃市临邛镇北４ｋｍ。地貌为平坝略起伏，黄色粘土。人均有１亩稻田，０２亩旱地，... To investigate the growth and decline of intestinal nematodes such as hookworm after the reform of the economic system in the rural areas under the household economic responsibility system, we conducted a survey in May 1985 and November 1996, respectively. The results are reported as follows: 1 Basic Information Bailian village is located in Qionglai City Linqu North 4km. Landscaped Pingba slightly undulating, yellow clay. Each person has 1 mu of paddy fields, 0  2 acres of dry land, ...