唐山市丰南区在利用小拱棚种植早春香菜的过程中通过选择新品种、提高种子发芽率、选择播种期和精细管理等措施,亩产香菜2000公斤,亩效益可达4000元以上。其技术要点如下:一、选择良种选用抗热耐寒、大叶速生、抽薹晚的品种,如泰国大湖香菜等。二、浸种催芽在3月15日,将香菜籽用石磨破开(亩 Fengnan District, Tangshan City, in the process of using small arch sheds to grow early spring cilantro, 2,000 kg of coriander was produced per mu by selecting new varieties, increasing seed germination rate, selecting sowing dates and fine management, yielding more than 4,000 yuan per mu. The technical points are as follows: First, the choice of seed selection heat-resistant cold, big leaf fast-growing, bolting late variety, such as the Great Lakes parsley and so on. Second, seed soaking germination in March 15, the coriander seeds broken with stone (mu