安徽农业科学2016，Vol.44Issue(32)：37-42,6.
不同耕作模式对玉米田土壤杂草种子库的影响
Effects of Different Tillage Patterns on Soil Weed Seedbank in Maize Field
摘要
Abstract
Objective] Field studies were conducted to evaluate the effects of two different tillage patterns, plowing and no-tillage, on the char-acteristics and the composition of soil weed seedbank.[Method] By using the method of weed seed germination,the 0-5,5-10,10-15,15-20,20-25,25-30 cm of 6 different soil samples were put into pots, the species and quantity of weeds were investigated after growing 60d under natural conditions, and then calculate the density and relative dominance of seed bank.[Result] The results showed that, a total of 24 weed spe-cies belonging 15 families in the plowing maize field,and 23 weed species belonging 15 families in the no tillage maize field.There were 19 kinds of weeds in plowing and no-tillage maize field.The main advantage weeds were Echinochloa crus-galli (L.), Chenopodium album Linn., Aca-lypha australis L., Solanum nigrum L.and Digitaria sanguinalis (Linn.) Scop.Broad leaved weeds are the main weeds, less gramineous weeds in the type of weeds.The density of weed seed bank is 4 292.4 grains/m2, more weeds located in 0-5, 20-25, 25-30 cm and the density and the relative advantages of E.c.is the highest in plowing maize field.The density of weed seed bank is 3 337.0 grains/m2 , more weeds located in the soil layer of 15-20, 20-25 cm and the density and the relative advantages of Ch.a.is the highest in no-tillage maize field.There are quite different in the soil distribution of dominant weed species.E.c.mainly distributed in 25-30 cm under the plowing maize field, and it is in the 0-5 cm soil layer under no-tillage field.Ch.a.mainly distributed in 20-25 cm under the no-tillage plowing maize field, and it showed a uniform distribution in the plowing field.[Conclusion] The composition and characteristics of soil weed seed bank in different tillage patterns were de-fined, which provided theoretical basis for integrated management of weeds in farmland .关键词
翻耕/免耕/玉米田/土壤杂草种子库Key words
Plowing/No-tillage/Maize field/Soil weed seedbank分类
农业科技引用本文复制引用
黄春艳,郭玉莲,王宇,黄元炬,朴德万,苏保华,徐充..不同耕作模式对玉米田土壤杂草种子库的影响[J].安徽农业科学,2016,44(32):37-42,6.基金项目
“十二五”国家科技支撑计划项目（2012BAD19B02）。 （）
