摘要
为了探讨江苏省稻茬冬小麦田禾本科杂草-阔叶杂草混合优势种群的防除指标,2020—2021年在江苏省扬州市邗江区稻茬冬小麦田中开展日本看麦娘-猪殃殃混合种群防除指标的研究。结果表明,日本看麦娘和猪殃殃混生对小麦具有危害,主要体现在小麦成穗和穗型上,即小麦分蘖成穗和每穗粒数减少,从而导致小麦减产。以使小麦减产5%的杂草混生密度、鲜重作为杂草防除的阈值,则稻茬小麦田的日本看麦娘、猪殃殃的混合防除指标为45.6株/m^(2)+6.8株/m^(2),杂草鲜重则需要达到230.8 g/m^(2)。
To explore control targets of mixed dominant population of Gramineous-broadleaved weeds in rice-wheat rotated winter wheat fields of Jiangsu Province,the study on control targets of mixed dominant population of Alopecurus japonicas and Galium aparine was carried out in Hanjiang district,Yangzhou City,Jiangsu Province from 2020 to 2021.The result showed that mixed occurrence of A.japonicas and G.aparine was harmful to wheat,which was mainly reflected in spike formation and spike size of wheat,the number of spike formation and spike size was reduced,resulting in the reduction of wheat yield.Weed mixed density with A.japonicas 45.6 plant/m^(2)+G.aparine 6.8 plant/m^(2) and weed fresh weight with 230.8 g/m^(2) that lead to 5%reduction in wheat yield were taken as the threshold of weed control.
作者
张绍明
朱先敏
彭程
袁树忠
邓维
董红刚
耿跃
ZHANG Shao-ming;ZHU Xian-min;PENG Cheng;YUAN Shu-zhong;DENG Wei;DONG Hong-gang;GENG Yue(Plant Protection and Quarantine Station of Jiangsu Province,Nanjing 210036,China;College of Horticulture and Plant Protection,Yangzhou University,Yangzhou 225009,China;Hanjiang District Crop Technology Promotion Center,Yangzhou City,Jiangsu Province,Yangzhou 225009,China)
出处
《杂草学报》
2021年第4期29-33,共5页
Journal of Weed Science
关键词
日本看麦娘
猪殃殃
杂草密度
杂草鲜重
防除指标
稻茬冬小麦田
Alopecurus japonicas
Galium aparine
weed density
weed fresh weight
control target
rice-wheat rotated winter wheat fields
