原种条等级和扦插密度对‘南林3804’杨树苗木生长的影响  

Effects of original seed grade and cutting densityon the growth of Nanlin 3804 seedlings

作　　者：臧红霞 李艳青 从云凌 Zang Hongxia;Li Yanqing;Cong Yunling(Forestry Technology Promotion Center of Siyang County,Suqian 223700,China)

机构地区：[1]泗阳县林业技术推广中心,江苏宿迁223700

出　　处：《江苏林业科技》2023年第6期28-31,共4页Journal of Jiangsu Forestry Science & Technology

基　　金：中央财政林业科技推广示范资金项目“美洲黑杨增汇营林技术示范”(苏[2023]TG02)。

摘　　要：为培育优质杨树造林种苗,以‘南林3804’杨树1年生苗木种条为研究材料,研究比较了原种条等级、扦插密度等因素对大田扦插繁育育苗的影响。结果表明:在插穗规格、水肥管理措施一致的条件下,在轻壤地育苗质量较高;采用1年生Ⅱ级苗作为原种条,截成长16 cm、小头直径2—2.5 cm、具3芽2节的穗条,常规浸泡灭菌后,按照25 cm×80 cm(5万株/hm^(2))的育苗密度扦插,苗木平均保存率达96.2%,当年生Ⅰ级苗和Ⅱ级苗的出圃率分别为25.49%和37.78%。With NL 3804 as the research material,the effects of original seed grade,cutting density on field cutting were studied and compared.The results indicated that under the same conditions of cutting specifications,water and fertilizer management,it is advisable to establish a nursery in sandy soil.Annual secondary seedlings should be used as the original seed strips,with a length of 16 cm,a thickness of 2—2.5 cm,and three buds and two nodes.After conventional soaking and sterilization,25 cm×80 cm(50000 plants/hm ^(2))should be used as the seedling density.The result was got in an average survival rate of 96.2%,and the emergence rates of primary and secondary seedlings in the same year were 25.49%and 37.78%,respectively.

关 键 词：雄株杨树 育苗 原种条等级 扦插密度 南林3804 

分 类 号：S723.1[农业科学—林木遗传育种]