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                                  林木苗木种子催芽的几种方法

                                  林木苗木种子催芽的几种方法 
                                  (发布日期2015-9-25 10:23:09)
                                    浏览人数10930

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                                      林木种子催芽的几种方法
                                  一浸种法
                                  ?#34892;?#26641;种的种子播前用凉水温水浸泡一下使种子吸水膨胀播后即可提早发芽榆桑杨柳等树种的种子播前只要用温水喷洒搅拌使种子湿润均匀阴干后即可播种;一般小粒种子用凉水浸泡3天5天后播种;种皮较厚的如松类侧柏等树种的种子需用45左?#19994;?#28201;水浸种3天5天然后播种刺槐桃李杏等树种的种子则要用热水烫种方法是先将种子放入缸中倒入85左?#19994;?#28909;水用水量约为种子体积的2倍3倍边倒水边用木棒搅拌使种子受热均匀然后使水自然冷却以后每天用45的温水冲1次2次待种子膨胀裂嘴后进行播种
                                  二层积催芽法
                                  对休眠期长发芽?#19979;?#30340;树种如红松水曲柳银杏松柏核?#19994;?#26641;种的种子可以采用层积的方法催芽即将湿沙与种子分层贮放在低温下(一般0桫5)催芽用的沙子应淘洗干净沙子湿度以手握不滴水松手不散为宜种子略有萌芽迹象时即可取出播种
                                  三去蜡去油法
                                  对于花椒毛楝等外皮有蜡质或油脂的种子要将种子放在70草木灰水中或在每50千克水中加入碱面20克浸泡待冷却后用手搓去蜡皮或油脂再?#20204;?#27700;冲洗然后捞出用生豆芽的方法催芽?#26519;?#23376;裂嘴后播种
                                  四破皮法
                                  对于种皮非常坚硬的种子应将种皮划破如桃杏板栗等树种的种子
                                  五阳畦催芽法
                                  播种前先在温床内填以10CM厚的细木屑或麦糠略压时摊平浇水湿透然后将处理过的种子均?#28909;?#25773;上面覆盖1CM左?#19994;?#26408;?#36857;?#21943;小水让木屑湿透然后用薄膜覆盖待种子裂嘴时取出播种也可待长出芽苗后进行移栽
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