坝上地区亚麻出苗及成苗的土壤水分响应指标研究  

The Response index of Flax Seedling Emergence and Formation to Soil Moisture in Bashang Area of Hebei Province

作　　者：李淑文[1,2] 李友[1] 文宏达[1,2] 

机构地区：[1]河北农业大学资源与环境科学学院,河北保定071001 [2]河北省农田生态环境重点实验室,河北保定071001

出　　处：《湖北农业科学》2014年第21期5135-5139,共5页Hubei Agricultural Sciences

基　　金：公益性行业(农业)科研专项(201003053)

摘　　要：以亚麻(Linum usitatissimum L.)"坝亚5号"品种为试验材料,采用人工控制试验方法,研究不同土壤水分梯度对亚麻出苗及成苗的影响。结果表明,土壤含水量(指质量含水量,下同)低于8%时,亚麻不出苗;随土壤水分含量增加,出苗率逐渐提高;土壤含水量达11%时,亚麻出苗率达最大值;之后随土壤水分增加,出苗率保持平稳且有所下降。苗期单株干物质量总体呈先升后降的趋势。土壤水分对亚麻出苗影响很大,因此应选择土壤含水量在11%左右时进行播种以保证安全成苗。The flax variety of Linum usitatissimum L.Baya-5 was used to study the effects of different soil moisture on flax seedlings emergence and formation with manual controlling test.The results showed that the flax did not emerge when the soil moisture was below 8％.The emergence rate of flax seedlings increased with the increase of soil moisture.When soil moisture was 11％,the emergence rate of flax seedlings reached a maximum value.With the increase of soil moisture,the emergence rate was stable or decreased.The dry matter quality of flax per plant at seedling stage increased first then decreased.Soil moisture greatly influenced the flax seedlings emergence.It is recommended that the soil moisture content should be about to 11％ when flax is sowed in Bashang area.

关 键 词：亚麻(Linum usitatissimum L.) 土壤水分 出苗率 成苗 

分 类 号：S152.7[农业科学—土壤学] S565.9[农业科学—农业基础科学]