百草枯对油桐生长及土壤理化性质的影响  

On Effects of Paraquat on Tung Oil Tree Growth and Soil Physicochemical Properties

作　　者：万盼[1] 刘芸[1] 黄小辉[1] 熊兴政[1] 彭丽媛[1] 陈佳玉[1] 欧阳[1] 袁孝谦 周恺[2] 孟祥江[2] 周长江 

机构地区：[1]西南大学资源环境学院林学系,重庆400716 [2]重庆市林业科学研究院,重庆400036 [3]重庆市高地农业开发有限公司,重庆409815

出　　处：《西南师范大学学报（自然科学版）》2014年第11期158-162,共5页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(31370602);林业公益性行业科研专项(201104043);重庆武陵山区油桐高产优质产业化技术开发研究(cstc2013yykfB80003)

摘　　要：以三峡库区油桐幼苗为实验材料,在种植前喷施百草枯,并以喷施清水作为对照,比较研究百草枯对油桐幼苗生长及其土壤理化性质的影响.结果表明:处理组的土壤pH值比对照高1.0%,差异不显著(p>0.05);处理组的土壤碱解氮、速效磷和速效钾含量分别比对照高6.8%,6.3%和5.4%,差异均不显著(p>0.05);处理组的土壤有机质、全氮、全磷和全钾含量分别比对照低1.5%,2.0%,0.39%和6.5%,差异也均不显著(p>0.05);处理组的油桐幼苗株高和地径增长量分别比对照组高11.8%和1.6%.可见,在正常使用剂量范围内,百草枯不仅对土壤的理化性质影响不大,还有助于油桐幼苗生长.因此,百草枯可用于消除油桐幼苗早期的杂草.The change of soil physicalchemical properties and growth situation of Three Gorges Reservoir area Tung oil tree has been analyzed in this paper with spraying the appropriate concentration of paraquat and water before planting .Results indicate that the soil pH ,content of alkali‐hydrolysable nitrogen ,avail‐able phosphorus and available potassium of the treatment are respectively 1 .0% ,6 .8% ,6 .3% and 5 .4%higher than that in control ,no significant difference in the treatment and the control （p 〉 0 .05） ;soil or‐ganic matter ,total nitrogen ,total phosphorus and total potassium tested are 1 .5% ,2 .0% ,0 .39% and 6 .5% lower than the contrast ,differences are not significant （p 〉 0 .05） ;increment of height and basal di‐ameter of Tung oil tree plant treated are 11 .8% and 1 .6% higher than in control .Paraquat in a normal range not only has no obvious influence on the soil physical and chemical properties ,also is helpful to Tung oil tree growth .Therefore ,paraquat can be used to eliminate Tung oil tree early seeding weeds .

关 键 词：百草枯 油桐 土壤理化性质 株高 地径 

分 类 号：S714.2[农业科学—林学]