日光温室栽培香椿，经济效益较高，但目前种植面积一直较少，主要有两点原因：一是育苗技术不过关，种子发芽率和出苗率较低，二是育苗占地面积较大。笔者总结几年来育苗栽培经验，供大家参考。一、优选种子。选用省内西南山区采集去年新鲜种子，搓净翅膜，过筛备用。优选... Sunflower greenhouse cultivation of Toona sinensis, higher economic efficiency, but the current planting area has been less, there are two main reasons: First, seedling technology, however, the seed germination rate and emergence rate is low, and second, larger area of ​​nursery. The author summarizes years of nursery cultivation experience for your reference. First, the preferred seed. Selection of mountainous areas in the southwest of the province collected fresh seeds last year, rub the net membrane wings, sieved spare. Preferred