论文部分内容阅读
苏铁在舟山能露地栽培,生长正常,并能开花,在一般情况下,雄花一年开一次,雌花两年开一次。由于苏铁雌雄异株,栽培分散,雌、雄花相遇机会很少,因此,很难采得到受孕饱满的种子。笔者于1987年作了人工授粉的初步试验,效果良好,1990年我们又对6株雌株进行了人工授粉,获得了51.65公斤饱满的苏铁种子,受孕率高达99.6％。我们的做法是: 一、适时收集花粉在一般情况下,苏铁雄花在每年7月上旬抽序,7月中旬开始散粉,
Cycas in Zhoushan can be open-field cultivation, growth and normal, and can bloom, in general, male flowers open once a year, female flowers bloom once every two years. As the cycads dioecious, scattered cultivation, female, male chance of encountering very few, therefore, it is difficult to get enough to conceive seeds. In 1987, the author made a preliminary experiment on artificial pollination and achieved good results. In 1990, we pollinated 6 female plants and obtained 51.65 kg of rich cycads, with a pregnancy rate of 99.6%. Our approach is: First, the timely collection of pollen In general, Cycas male flowers in early July each year in order, loose powder began in mid-July,