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一、采种椴树种子在青龙县都山林区一般在9月中、下旬成熟,待果皮变成褐色时即可采集。采集方法如下:将椴树果实的整个果序采下,收集后摊在铺有塑料布的地面上,晒干后揉碎果序,进行风选去杂,所得的种子在阴凉通风处阴干。二、种子处理成熟的椴树种子种皮透水性差,先将种子用250ug/g赤霉素溶液浸泡2天,然后沙藏,沙藏时间为140天,可以达到解除椴树种子的休眠,提高发芽率,保证出苗整齐的目的。三、播种播种应在春季进行。播种时可采用高床或低床条播,行距30cm左右,在苗床上开沟,
First, the seeds of lime trees in the county are all in Qinglong County Forests in mid-September, late mature, until the peel turns brown can be collected. The collection method is as follows: The entire fruit of lime tree mining, collected after the spread in the shop with plastic cloth on the ground, dried and crushed after the order, for the wind to go to miscellaneous, the seeds were dried in a cool and ventilated place. Second, the seed treatment mature linden tree seed coat water permeability is poor, the first seeds with 250ug / g gibberellin solution soak for 2 days, and then sand, sand storage time of 140 days, you can reach the lodminal tree dormancy lift, increase Germination rate, to ensure the emergence of tidy purposes. Third, planting sowing should be carried out in the spring. Can be used when sowing high bed or low bed sowing, spacing 30cm or so, in the seedbed ditching,