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Position: Home > Articles > Weed Community Characteristics and Population Diversity in Winter Wheat Fields in the Guanzhong Irrigation Area of Shaanxi Province Journal of Weed Science 2021 (3) 21-27

陕西关中灌区冬小麦田杂草群落特征及种群多样性

作者：

郭云忠;胡杰;李思娟;李文文;闫明杰;胡小平

单位：

旱区作物逆境生物学国家重点实验室/西北农林科技大学植物保护学院

关键词：

关中灌区;麦田杂草;群落特征;种群多样性;除草剂

摘要：

采用倒置"W"9点取样法对陕西关中冬小麦田杂草进行调查,分析麦田杂草的种类组成、出苗规律和群落结构。结果表明,关中灌区小麦田杂草有15种,隶属15属8科,形成播娘蒿+荠菜+婆婆纳+猪殃殃+节节麦+野燕麦+麦家公为主的杂草群落,在这个群落中发生优势度大的杂草为播娘蒿、荠菜、婆婆纳、猪殃殃、节节麦。这些杂草在小麦3～4叶期已有91%以上出土,是药剂防治的最佳窗口期。比较各地的杂草群落,杨凌、武功、眉县、临潼、兴平、扶风等6个县(市、区)杂草群落的物种丰富度、多样性和均匀度较高。根据关中灌区麦田杂草群落结构,宜选择唑草酮、双氟磺草胺和甲基二磺隆3种除草剂搭配除草。

译名：

Weed Community Characteristics and Population Diversity in Winter Wheat Fields in the Guanzhong Irrigation Area of Shaanxi Province

作者：

GUO Yun-zhong;HU Jie;LI Si-juan;YAN Ming-jie;LI Wen-wen;HU Xiao-ping;State Key Laboratory of Crop Stress Biology in Arid Areas/College of Plant Protection,Northwest A&F University;

关键词：

Guanzhong irrigation area;;weeds in wheat fields;;community characteristics;;population diversity;;herbicide

摘要：

Wheat fields in Guanzhong irrigation area were surveyed according to the inverted “W” 9-point sampling method to determine weed species composition, emergence regularity and community structure. There were 15 species of weeds in wheat fields belonging to 15 genera and 8 families, which formed a weed community mainly composed of Descurainia sophia,Capsella bursa-pastoris,Veronica didyma,Galium aparine,Aegilops tauschii,Avena fatua,Buglossoides arvense,and Lamium amplexicaule. Weeds with great dominance in this community were D. sophia,C. bursa-pastoris,V. didyma,G. aparine,A. tauschii. These weeds were emerged along with and subsequently after wheat; and more than 91% of the weeds had emerged at the 3～4 leaf stage of wheat, in mid-November, which corresponded to the best time for chemical control. Comparing the weed communities among different locations, those from Yangling, Wugong, Meixian, Lintong, Xingping and Fufeng had high species richness, diversity and evenness. According to the community structure of weeds in wheat fields of Guanzhong irrigation area, three herbicides, namely, carfentrazone-ethyl, florasulam and metsulfuron-methyl are suitable for selective weed control.

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陕西关中灌区冬小麦田杂草群落特征及种群多样性

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