不同水分状况下液体地膜覆盖对油松种子出苗率和幼苗生长的影响  

Effects of Liquid Film Mulching on Germination and Seedling Growth of Chinese Pine

作　　者：韦丹[1] 聂立水[2] 朱清科[1] 罗盼盼[1] 张国全[2] 孙宾[2] 苟丽晖[2] 

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]北京林业大学林学院,北京100083

出　　处：《沈阳农业大学学报》2014年第3期347-350,共4页Journal of Shenyang Agricultural University

基　　金：林业公益性行业科研专项项目(201104008-2)

摘　　要：采用完全随机区组设计,考察不同水分状况(35%,55%,75%田间持水量)下3种液体地膜用量(225,375,525 kg·hm-2)对于油松的种子出苗率、苗高和根长的影响。结果表明:喷施液体地膜的各处理种子出苗率比同水分条件下的对照均有所提高,其中W2Y2处理(55%田间持水量且喷施液体地膜用量为375kg·hm-2)出苗率提高最多,比对照提高26.38%;喷施液体地膜处理的油松苗高均高于对照,其中W2Y2的苗高最高,比对照高11.1mm;喷施液体地膜处理的油松根长占幼苗全长比例均低于对照,W2Y2处理最低(70.37%)。可见,W2Y2处理最利于油松种子的萌发和生长。In order to study the effect of different liquid film dosages on the germination rate, seedling height and root length of Chinese pine under different water conditions, a complete randomized block design was conducted. The results showed that germination rate and seedling height were increased after the use of liquid film. The highest records were in the treatment W2Y2 （with 55% of field capacity and 375 kg.hm-2 liquid film）, which increased germination rate by 26.38% and seedling height by ll.lcm compared with the control. Ratio of root to seedling length was declined after the use of liquid film, while the least in the treatment W2Y2 at 70.37%, which the W2Y2 treatment oromotes germination and growth best.

关 键 词：油松 液体地膜 出苗率 苗高 根长 

分 类 号：S725[农业科学—林木遗传育种]