[1]王晓琳,张卓亚,伏进,等.秸秆还田条件下不同播种量结合除草剂对杂草和小麦生长的影响[J].江苏农业学报,2017,(02):307-313.[doi:doi:10.3969/j.issn.1000-4440.2017.02.011]
　WANG Xiao-lin,ZHANG Zhuo-ya,FU Jin,et al.Effects of seeding rate combined with herbicide application on weeds and wheat growth under the condition of rice straw returning[J].,2017,(02):307-313.[doi:doi:10.3969/j.issn.1000-4440.2017.02.011]
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秸秆还田条件下不同播种量结合除草剂对杂草和小麦生长的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年02期
页码:
307-313
栏目:
植物保护
出版日期:
2017-04-30

文章信息/Info

Title:
Effects of seeding rate combined with herbicide application on weeds and wheat growth under the condition of rice straw returning
作者:
王晓琳1; 张卓亚1; 伏进2; 李贵1
(1.江苏省农业科学院植物保护研究所，江苏南京210014；2.江苏省国营白马湖农场，江苏淮安223216)
Author(s):
WANG Xiao-lin1; ZHANG Zhuo-ya1; FU Jin2; LI Gui1
(1.Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;2.State-run Baimahu Farm of Jiangsu Province, Huai’an 223216, China)
关键词:
秸秆还田; 播种量; 除草剂; 除草效果; 产量
Keywords:
straw residue; seeding rate; herbicide; weeding effect; yield
分类号:
S512.1+10.42;S482.4
DOI:
doi:10.3969/j.issn.1000-4440.2017.02.011
文献标志码:
A
摘要:
通过田间小区试验研究秸秆还田条件下小麦不同播种量结合除草剂对杂草抑制效果和小麦产量的影响。结果表明：不使用除草剂的情况下，随着小麦播种量上升，看麦娘和婸草的发生密度呈下降趋势，与75.0 kg/hm2播种量相比，112.5～225.0 kg/hm2播种量下小麦田杂草发生密度显著降低 24.64%～77.73%。相同播种量下，不同剂量化学除草剂对看麦娘发生的抑制作用有显著差异，与相同播种量、不使用除草剂相比，5%唑啉·炔草酯EC 60 g/hm2，a.i对看麦娘和婸草抑制作用分别为 52.46%～74.44%和 44.55%～75.44%。相同除草剂使用剂量下，随播种量增加，杂草受抑制作用也呈上升趋势，其中5%唑啉·炔草酯EC 30 g/hm2，a.i，小麦播种量 150.0 ～225.0 kg/hm2时，与75.0 kg/hm2播种量相比，看麦娘密度显著下降 28.43%～50.00%，婸草密度显著下降 70.80%～83.70%。可见适当提高小麦播种量可通过改变小麦-杂草生态竞争关系，抑制杂草发生密度，提高化学除草效果，而且适当增加小麦播种量，配合使用5%唑啉·炔草酯EC对小麦生长发育、光合作用等没有显著不利影响，150.0 kg/hm2小麦播种量时，使用5%唑啉·炔草酯EC 有助于提高小麦产量，但不同剂量之间没有显著差异，187.5kg/hm2小麦播种量时，是否使用除草剂对小麦产量没有显著影响，秸秆还田条件下适当增加小麦播种量可促进化学除草剂使用量的降低。
Abstract:
This study investigated the effects of seeding rates combining herbicide use on the weeds growth and wheat yield in wheat fields returned with rice straw. Under the condition of no herbicide use, the decrease in wheat seeding rate reduced the weed density of Alopecurus aequalis Sobol. and Beckmannia syzigachne (Steud.) Fernald. The seeding rates at 112.5-225.0 kg/hm2 of wheat decreased the weed density by 24.64%-77.73%, compared with the seeding rate at 75.0kg/hm2. In the wheat fields with the same seeding rate, herbicides inhibited the emergenge of A. aequalis. Compared to the wheat fields with the same seeding rates and no herbicide use, the inhibitory effects of the mixture of 5% pinoxaden·clodinafop-propargyl EC at 60 g/hm2，a.i on A. aequalis and B. syzigachne were decreased by 52.46%-74.44% and 44.55%-75.44%, respectively. Under the same dosage of herbicide, there has also been a significant rise in the inhibition of weeds caused by the increase of seeding rate. When the wheat seeding rates rose from 150.0 kg/hm2 to 225.0 kg/hm2 in the field with 5% pinoxaden·clodinafop-propargyl EC at 60 g/hm2，a.i, the A. aequalis and B. syzigachne densities were reduced by 28.43%-50.00% and 70.80%-83.70% compared with the seeding rate at 75.0 kg/hm2. It was inferred that a proper increase in wheat seeding rate could inhibit weed growth, thereby improved the chemical herbicide effect through changing the ecological competition between wheat and weeds.

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备注/Memo

备注/Memo:
收稿日期：2016-10-17 基金项目：国家自然科学基金项目（31272080）；公益性行业(农业)科研专项(201303022)；国家“十二五”科技支撑计划项目(2012BAD19B02) 作者简介：王晓琳(1986-)，女，辽宁营口人，硕士，助理研究员，从事杂草及其治理技术研究。(E-mail)morethan365@126.com 通讯作者：李贵， (E-mail)ippligui@126.com
更新日期/Last Update: 2017-05-02