| 小麦不同生育期地下害虫为害程度与其虫口密度的关系 |
| |
| 引用本文： | 许向利,李艳红,李怡萍,仵均祥,陆俊娇.小麦不同生育期地下害虫为害程度与其虫口密度的关系[J].植物保护学报,2012,39(5):385-389. |
| |
| 作者姓名： | 许向利 李艳红 李怡萍 仵均祥 陆俊娇 |
| |
| 作者单位： | 1. 西北农林科技大学,农业部西北黄土高原作物有害生物综合治理重点实验室,植保资源与害虫治理教育部重点实验室,陕西杨凌712100
2. 山西省农业科学院植物保护研究所,太原,030000 |
| |
| 基金项目： | 公益性行业(农业)科研专项(201003025) |
| |
| 摘 要： | 为明确小麦不同生育期地下害虫为害程度与其虫口密度的关系,采用棋盘式10点取样法,在调查秋播前麦田地下害虫种类和数量的基础上,研究冬前秋苗期和春季返青拔节期地下害虫为害造成的麦苗死亡率。在陕西武功,秋播前麦田地下害虫有20种,其中以金针虫和蛴螬为优势种,分别占地下害虫发生总量的58.66%和21.91%。地下害虫为害引起的死苗现象主要发生在冬前秋苗期,供试5块田的死苗率达4.4%～9.1%;春季返青拔节期的死苗率较低,仅为1.0%～2.3%。相关分析表明,地下害虫为害造成的冬前秋苗期和春季返青拔节期死苗率与其虫口密度密切相关。
|
| 关 键 词： | 小麦 死苗率 地下害虫 虫口密度 为害程度 |
| 收稿时间： | 2012/3/12 0:00:00 |
Relationship between the population density of ground pests and degree of damage |
| |
| Xu Xiangli,Li Yanhong,Li Yiping,Wu Junxiang and Lu Junjiao.Relationship between the population density of ground pests and degree of damage[J].Acta Phytophylacica Sinica,2012,39(5):385-389. |
| |
| Authors: | Xu Xiangli Li Yanhong Li Yiping Wu Junxiang and Lu Junjiao |
| |
| Institution: | Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, P. R. China, Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Northwest A & F University, Yangling 712100, Shaanxi Province, China;Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, P. R. China, Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Northwest A & F University, Yangling 712100, Shaanxi Province, China;Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, P. R. China, Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Northwest A & F University, Yangling 712100, Shaanxi Province, China;Key Laboratory of Integrated Pest Management on Crops in Northwestern Loess Plateau, Ministry of Agriculture, P. R. China, Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, Northwest A & F University, Yangling 712100, Shaanxi Province, China;Institute of Plant Protection, Shanxi Academy of Agriculture Sciences, Taiyuan 030000, Shanxi Province, China |
| |
| Abstract: | To evaluate the relationship between the population density of underground insect pests and degree of damage on the host, insect pest species and population number of each species were examined before wheat being sowed in autumn. Meanwhile, wheat seedling death rates at different development stages were investigated using chessboard sampling method in Wugong, Shaanxi Province. A total of 20 soil insect pest species were found in the tested wheat fields before wheat being sowed in autumn. Wireworms and grubs were the dominant pest species, up to 58.66% and 21.91% of all the soil insect pests, respectively. Soil insect pests resulted in the higher seedling death rate from 4.4% to 9.1% during fall-seedling stage than that from 1.0% to 2.3% during turning-green stage. Correlation analysis showed that seedling death rates caused by soil insect pests were significantly correlated with their population densities at both fall-seedling and turning-green stages. |
| |
| Keywords: | wheat seedling death rate soil insect pest population density damage degree |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《植物保护学报》浏览原始摘要信息 |
| 点击此处可从《植物保护学报》下载免费的PDF全文 |
|
