| 李妍颖, 李梅梅, 杨 琪, 陈丽慧, 李伯辽, 房爱省, 何柯杭, 董继广, 赵玉婉, 于志浩, 郝引川*, 仵均祥*.亚洲玉米螟为害对玉米产量的影响与防治指标研究[J].植物保护,2022,48(1):82-89. |
| 亚洲玉米螟为害对玉米产量的影响与防治指标研究 |
| Effects of Ostrinia furnacalis (Guenée) on maize yield and treatment threshold |
| 投稿时间：2020-11-09 修订日期：2020-12-28 |
| DOI：10.16688/j.zwbh.2020592 |
| 中文关键词: 玉米螟 虫口密度 产量损失率 防治指标 |
| 英文关键词:Ostrinia furnacalis population density yield loss rate treatment threshold |
| 基金项目:国家重点研发计划(2017YFD0201807) |
| 作者 | 单位 | E-mail | | 李妍颖, 李梅梅, 杨 琪, 陈丽慧, 李伯辽, 房爱省, 何柯杭, 董继广, 赵玉婉, 于志浩, 郝引川*, 仵均祥* | 西北农林科技大学植物保护学院, 杨凌 712100 | 郝引川 h.ychuan@163.com;仵均祥junxw@nwsuaf.edu.cn |
|
| 摘要点击次数: 388 |
| 全文下载次数: 618 |
| 中文摘要: |
| 为明确玉米螟为害对玉米造成的经济损失, 制定合理的防治指标, 及时进行科学防治, 2018年和2019年调查了田间自然条件下玉米螟在不同品种上发生为害情况, 对虫口密度与产量损失率的关系进行了统计分析。结果表明, 2018年玉米螟发生为害程度明显重于2019年;雌穗受害程度明显高于茎秆。虫口密度在0~4头/株范围内与单穗重呈负相关, 与产量损失率呈正相关。回归分析表明, 2018年玉米螟虫口密度(X)与供试品种产量损失率(Z)之间关系为: Z郑单958=1.367 X -1.539, R2 =0.978 0; Z陕单609=2.059 X -2.317, R2 =0.926 2; Z陕单650=2.139 X -1.495, R2 =0.955 9; Z 新单47=1.908 X -1.97, R2 =0.978 9; Z泽玉8911=1.309 X -1.147, R2 =0.989 8。2019年玉米螟虫口密度(X)与供试品种产量损失率(Z)之间的关系为: Z郑单958=1.241 3 X -1.094 2, R2 =0.954 1; Z陕单609=1.867 7 X -1.766 4, R2 =0.981 4; Z陕单650=1.603 5 X -1.692 0, R2 =0.970 1。根据2018年和2019年两年5个品种8组调查数据分析, 结合当地玉米螟防治实际费用, 确定玉米螟防治指标为3.15头/株, 或315头/百株, 这一研究结果可为基于农药减施增效的玉米螟科学防治提供理论依据。 |
| 英文摘要: |
| In order to determine the economic loss of maize caused by Ostrinia furnacalis (Guenée), and reasonably determine the control indexes and make timely and scientific control of the corn borer. The occurrence and damage of corn borer on different maize varieties were investigated in the field in 2018 and 2019. Meanwhile, the statistical relationships between population densities and yield loss rates were analyzed. The results showed that the degree of occurrence and damage of O.furnacalis (Guenée) was more serious in 2018 than in 2019, and the damage degree of maize ears was more severe than that of stalk. With increasing insect population densities from zero to four individuals per plant, the population density was negatively correlated with single spike weight, but positively correlated with the yield loss rate. Regression analysis shows that the relationship between corn borer population density (X) and yield loss rate (Z) of tested varieties in 2018 was ZZD958=1.367 X -1.539, R2 =0.978 0; ZSD609=2.059 X -2.317, R2 =0.926 2; ZSD650=2.139 X -1.495, R2 =0.955 9; ZXD47=1.908 X -1.97, R2 =0.978 9; ZZY8911=1.309 X -1.147, R2 =0.989 8; while the relationship in 2019 was ZZD958=1.241 3 X -1.094 2, R2 =0.954 1; ZSD609=1.867 7 X -1.766 4, R2 =0.981 4; ZSD650=1.603 5 X -1.692 0, R2 =0.970 1. According to the data analysis of eight groups of five maize varieties investigated in two years, combined with the actual control cost of local corn borers, the treatment threshold of the corn borer was 3.15 individuals per plant or 315 individuals per 100 plants. The results provided a theoretical basis for scientifically managing and controlling the corn borer in compliance with the principle of reducing pesticide use and increasing efficiency. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
