京郊大兴区庞各庄东梨园村有位远近闻名的“种瓜能手”—张克义,他种植小型西瓜已有10多年。2009年开始参加设施农业骨干农民研修,两年后,他又多了一个称呼:“骨干老师”。刚开始,老张觉得自己水平高,对研修不感冒。慢慢的,老张兴致就来了:“外边的新品种、新 Beijing Daxing District Panggezhuang East Liyuan Village has a well-known ”seed melon expert “ - Zhang Keyi, he planted a small watermelon more than 10 years. In 2009 began to participate in agricultural facilities farmers training, two years later, he added a title: ”backbone teacher “. At the beginning, Zhang felt that he had a high level of training and did not catch a cold. Slowly, Zhang Xing came: ”The new varieties outside, new